Communication needs for improved uptake of PrEP and HIVST services among key populations in Nigeria: a mixed-method study

Background World Health Organization (WHO) reports that people who indulge in risky behaviours such as penile-anal sex, unprotected intercourse, multiple sex partners, and alcohol and illicit drugs are at risk of HIV/AIDS and classified as Key Populations (KPs). Since the introduction of PrEP and HIVST for the key population groups in Nigeria, government entities and implementing partners have used a range of channels in messaging these essential services across to the target groups—ranging from in-person, social media, television, and radio adverts. Yet, few successes have been documented, thereby necessitating the need to understand the enabling facilitators, barriers to, and communication needs of the KP groups in messaging PrEP and HIVST services in Nigeria. Communicating PrEP and HIVST services will empower the key populations to seek available HIV prevention services and help to increase access to HIV testing services in Nigeria. Methods This study was a mixed-method cross-sectional design; involving 1169 participants from the key populations in Nigeria. The study used a survey and qualitative exploratory methods (interviews and focus group discussion), to collect data from the participants—MSM, FSWs, and key influencers of the KP groups (health providers, peer educators, HIV program officers). In August 2020, data collection was conducted using an open data kit (ODK). Quantitative data were analyzed using SPSS version 20 for descriptive statistics, while qualitative data were analyzed using deductive and thematic analysis based on the codebook. Results The KPs were mainly urban dwellers (77.7%), and the majority of the participants were between 18 to 28 years (89.3%). However, the MSM group was of a younger population compared to the FSWs. A majority completed secondary education (56.1% FSWs and 43.5% MSM). The MSM group showed more tendency to acquire higher education compared to the FSWs. For example, about 51.3% of the MSM group were undergraduates compared to 9.5% of the FSWs. The majority of the KPs were self-employed (56.4% FSWs and 40% MSM). Only about 51% of the KPs were aware of PrEP, with typological variations (39.9% FSWs and 62.3% MSM). MSM group in Lagos (82.5%) were more aware of PrEP services, than 53.1% and 54.5% in A/Ibom (53.1%) and C/River (54.5%). Among the enablers to acquiring PrEP information was the ability of the KPs to network within their communities and on personal relationships. Evidence shows that no single approach influenced the acquisition and use of PrEP information by KPs. Although this proportion varied across the geographic locations, only about 50% of the KPs were aware of HIVST services (40% FSWs and 60% MSM). The factors that enabled the acquisition and use of the prevention commodities were cross-cutting, including a previous or current role as a peer educator, integration of the messages, peer networking, multi-lingual and multi-channel presentation, job aids, and reminders. KPs expressed the need for information on how to take PrEP, eligibility, clarification on differences between PrEP and PEP, clarification on any side effects, for PrEP, price, efficacy, sales point, dosage, available brands. A scale-up of the research across all geopolitical zones and a survey to quantify the prevalence would help understand the dynamics and prioritization of interventions for scaling up PrEP and HIVST services in Nigeria. Conclusions The study documented barriers and facilitators to the uptake of PrEP and HIVST among key populations in Nigeria. It highlighted that KPs are willing to receive PrEP and HIVST messages. The policy actors should consider the preferences of the KPs and the key influencers in reducing barriers to communication and increasing the uptake of PrEP and HIVST services; ensure it reflects in a tailored communication strategy. Since multi-linguistics and multi-channels of presentation were enablers to acquiring PrEP and HIVST messages, the communications strategy for HIV prevention should incorporate these recommendations and adapt to context-specific approaches for effective messaging.


Introduction
television, and radio adverts [7,15,16]. Yet, few successes have been documented, thereby necessitating the need to understand the enabling facilitators, barriers to, and communication needs of the KP groups in messaging PrEP and HIVST services in Nigeria. For example, a cohort pilot conducted in Lagos using a hotline to disseminate messages HIVST kits among 257 participants showed that 98% of the participants requested access to the HIVST kits due to the health information [7]. Also, a study in northern Nigeria indicated that only about 53% of the participants were aware of PrEP. Participants reported social networking app as a medium for receiving information about PrEP [12]. This knowledge gap necessitated the need to document the enabling facilitators, barriers to, and the needs of the KP groups in communicating PrEP and HIVST services in Nigeria. Messaging PrEP and HIVST services will empower the key populations to seek available HIV prevention services and help to increase access to HIV testing services in Nigeria. The purpose of the study was to identify the communication needs and preferences of key population (KP) groups as evidence for developing strategies and interventions to increase awareness and use of HIVST and PrEP services among the KPs in Nigeria. Specifically, the study aimed to: • To identify the enablers in acquiring and using effective communication for promoting PrEP and HIVST among KP groups in Nigeria • To identify the barriers to acquisition and use of communication required to promote PrEP and HIVST use among KP groups in Nigeria. • To describe communication needs of KPs and their support groups to promote behavior change for PrEP and HIVST among KP groups in Nigeria. and 60% MSM). The factors that enabled the acquisition and use of the prevention commodities were cross-cutting, including a previous or current role as a peer educator, integration of the messages, peer networking, multi-lingual and multi-channel presentation, job aids, and reminders. KPs expressed the need for information on how to take PrEP, eligibility, clarification on differences between PrEP and PEP, clarification on any side effects, for PrEP, price, efficacy, sales point, dosage, available brands. A scale-up of the research across all geopolitical zones and a survey to quantify the prevalence would help understand the dynamics and prioritization of interventions for scaling up PrEP and HIVST services in Nigeria.

Conclusions:
The study documented barriers and facilitators to the uptake of PrEP and HIVST among key populations in Nigeria. It highlighted that KPs are willing to receive PrEP and HIVST messages. The policy actors should consider the preferences of the KPs and the key influencers in reducing barriers to communication and increasing the uptake of PrEP and HIVST services; ensure it reflects in a tailored communication strategy. Since multi-linguistics and multi-channels of presentation were enablers to acquiring PrEP and HIVST messages, the communications strategy for HIV prevention should incorporate these recommendations and adapt to context-specific approaches for effective messaging.  [16][17][18].

Study design and population
This study was a mixed-method cross-sectional design; involving a survey of 1169 participants; qualitative exploratory methods; focus group discussion (FGD), and key informant interview (KII) among MSM, FSWs, and key influencers of the KP groups (health providers, peer educators, HIV program officers).

Sample size
The table below describes the different data collection activities for this research. The quantitative sample calculation was based on previous key population characterization in 2015 by Society for Family Health [19], from a known population size-n = NN 1+NN (ee)2 . Based on the estimated population of the KPs in each state as documented in a previous study [19], the different sample size was calculated for each state (see Table 2). For qualitative interviews, focused group discussions (FGDs), were conducted with the KP groups-MSM and FSWs. Also, key informant interviews (KIIs) were conducted with the KPs and key influencers across the three states. (see Table 2 for breakdown).

Data collection and management
The survey was conducted through a face-to-face interaction using an open data kit (ODK). In addition, FGDs and KIIs were conducted with a topic guide in August 2020. KPs above 18 years and consented to the study were included; the KPs were recruited through their support groups, led by key influencers. Data were collected on KPs' socio-demographic characteristics, awareness of PrEP and HIVST, and preferred communication channels for PrEP and HIVST messaging. Interviews were conducted using the respondents' preferred language, recorded, and transcribed verbatim to ensure data quality. The transcripts were given unique identifiers for ease of analysis and reference.

Data analysis
Quantitative data were analyzed using SPSS version 20 for descriptive statistics, while qualitative data were analyzed using deductive and thematic analysis based on the codebook. The codebook is an analysis framework for qualitative exploratory studies, containing themes and sub-themes for the interpretation of data.

Participants characteristics
A total of 1169 (824 FSWs and 345 MSM) KPs participated in the survey. Sixty KIIs were conducted (30 FSWs and 30). We conducted 6 FGDs (3 FSWs and 3 MSM groups). In addition, a total of 49 KIIs were conducted with key influencers (27 males and females). Results indicated that KPs were mainly urban dwellers, and the majority of the participants were between 18 to 28 years. However, the MSM group was of a younger population compared to the FSWs. The MSM group showed more tendency to acquire higher education compared to the FSWs. For example, about 51.3% of the MSM group were undergraduates compared to 9.5% of the FSWs (p = 0.000). The majority of the KPs were self-employed (Table 3).

Awareness about PrEP services
The mixed-method analysis revealed disproportionate gaps in awareness about PrEP among the KPs. Only about 51% of the KPs were aware of PrEP, with typological variations (39.9% FSWs and 62.3% MSM; p = 0.000). The level of awareness was higher among those who previously served as peer educators to the KPs. However, there was some misconception around the eligibility for the use of PrEP-for example, some KPs mistake preexposure prophylaxis of HIV (PrEP) for post-exposure prophylaxis (PEP). Such information asymmetry continues to limit the introduction and use of PrEP among the KPs despite understanding the importance of PrEP in preventing HIV.
"I thought it's when you have unprotected sex or if condom breaks during sexual intercourse, then you can take the drug" LAS-KII-FSW-09.
MSM group in Lagos (82.5%) were more aware of PrEP services, than 53.1% and 54.5% in A/Ibom(53.1%)and C/ River (54.5%) (p = 0.000). In addition, the MSM group showed a higher level of awareness of PrEP than the FSW group.
Data shows multiple, intertwining information flow for PrEP, including peer influence, social media, NGO/CBO activities, health providers, among others. MSM group was likely to acquire PrEP information via peer influence (46%) and social media (14.4%) compared to the FSW group (24.2% and 6.1%), respectively (p = 0.000). Contrarily, FSWs reported higher proportions of NGO/CBO and health provider influence (usually face-to-face messaging) than the MSM group across the three states (see Fig. 1).
Among the enablers to acquiring PrEP information was the ability of the KPs to network within their communities and on personal relationships. Information about PrEP continues to diffuse among the KPs-some community members reported receiving or giving out information on PrEP and HIVST to other community members who do not participate in the peer sessions or are not in the closed community groups. MSM group was more likely to network information on PrEP than FSWs.

Current channels for messaging PrEP services
Evidence shows that no single approach influenced the acquisition and use of PrEP information by KPs. However, the Face-to-face channel was the most reported means of acquiring PrEP messaging (32.6% FSWs and 49% MSM) (see Fig. 2).
Findings showed that KPs explored various media channels for messaging PrEP. This included WhatsApp, Facebook, Instagram, and Twitter, and short message service (SMS). However, using mixed languages-local dialect, pidgin, and English languages for messaging PrEP across the three states enabled acquisition and use of such information. Other channels are exclusively for KPs such as manjam, tindre, and grindr, providing more secure, encrypted opportunities for KPs to express themselves and share information with their key influencers. These channels were yet to be maximized.
"Yes, Instagram, Facebook, we have even some Apps such as manjam, tindre, and grindr that are strictly for community members" LAS-KII-PM-02.
"I get the information from the internet, mass media. There are even groups on WhatsApp, Facebook that you can belong to talk about PrEP" AKS-FGD-MSM-P1.
Complimentarily, key influencers reported using critical job aids to facilitate PrEP and HIVST awareness within KP communities irrespective of typology.

Awareness about HIVST services
Gaps exist in awareness about HIVST, especially among the FSWs. Only about 50% of the KPs were aware of HIVST services (40% FSWs and 60% MSM), although this proportion varied across the geographic locations (p = 0.004). (see Fig. 3). Mixed reactions from the respondents suggested that even though there has been an effort to increase HIVST awareness, there may have been slow progress in the uptake of the services.
"For now, we are just aware of HIVST, but we have not started using it" LAS-KII-MSM-03. "I don't know about it before now, but If I see it, I can use it on myself " LAS-KII-FSW-01.

Current channels for messaging HIVST services
For HIVST messaging, the in-person channel was the most reported (85% FSWs and 68% MSM). The second was social media channels, including Facebook, Twitter, and Instagram (9.4% FSWs and 31.6% MSM). These proportions varied across the study locations. In line with the COVID-19 social distancing protocol, key influencers reported that the social media channels also act as social support groups which they use to upload videos displaying information and demonstrating how to and how not to conduct self-test for HIV.
FGDs indicated an integrated delivery of HIVST with other commodities such as PrEP, condoms, and lubricants, given that they all target the same population groups (Fig. 4).
Qualitative data indicated that some MSM reported that they became aware of HIVST initially during peer group discussion and subsequently through NGOs, social media, flyers, emails, and face-to-face with a health care provider. While many of the respondents did not have a good understanding of the workability of the self-testing process, there were a selected few who could describe the procedures, despite using some KPs as ambassadors for promoting HIVST services.
"The information I heard is that the HIV self-testing is a kit being used personally at your own convenient time to test yourself either from oral fluids or from blood. " CRS-KII-MSM-07.
Cross-sectional views of the respondents suggested that various channels encourage wider communication of HIVST information, indicating that there is not one channel for effective delivery of the information.

Enablers to acquisition and use of PrEP and HIVST messaging among the KPs
The factors that enabled the acquisition and use of the prevention commodities were cross-cutting and outlined in Table 4 below:

Barriers to acquisition and use of PrEP and HIVST messages
Barriers to acquisition and use of PrEP and HIVST messages found in this study are categorized into five typologies: individual, facility-related, socio-cultural, socio-economic, and medication-related factors.

Individual factors
There is initial self-stigma due to the level of literacy required to participate in the social media-based peer session, retrieving messages, and navigating through the platforms. This phenomenon is preponderant among FSWs than MSM and leads to KPs pairing with their friends to receive social media/device-based information on the prevention commodities.
"Some people don't know how to read and writesome of them will choose to join their friends to do it because their friends are doing it. Some will feel ashamed and isolate themselves because they can't read" LAS-KII-FSW-07. "There are people who may not be comfortable with your sexual orientation and these commodities, because of this kind of situation, you can't hide like that. So, you have to tell the truth" AKS-KII-MSM-04.
The absence of privacy limits the acquisition of information on PrEP and HIVST services. Some participants do not have employment and share accommodation and personal effects with other household members. Therefore, they do not have privacy in keeping and using these essential HIV prevention commodities. Some MSM felt that closed groups such as WhatsApp and Facebook are subject to abuse with gossip and intangible discussions, leading to a lack of willingness of some community members to participate in the discussions.  Although there were positive responses regarding messaging through social media, some KPs complained that they do not have smartphones required to access social media interactions. Some FSWs complained about losing the social media handle addresses (Instagram and Twitter), while some have never been on social media.
"For now, I am not on any social media platform because I don't have an android phone, because they stole it" LAS-KII-FSW-01.
Reports also indicated that social media-based communication messages could be misinterpreted sometimes, probably due to a lack of understanding of PrEP or HIVST messages. However, KPs recognized that social media saves cost and time to attend face-to-face sessions.
KPs often expect incentives (financial and other nonfinancial rewards) before participation in information sharing sessions, especially when it involves in-person peer sessions. Non-financial incentives highlighted included the provision of free condoms, lubricants, and HIVST kits. Financial reward relates to transport fees despite that peer educators visit the KP locations, especially for the FSWs.

"You know here in Nigeria if you want to get somebody's mind, there must be something like an incentive to attract them" LAS-KII-Key influencer-03.
Frequent low phone battery (resulting from the limited power supply) and limited internet access were among the potential barriers to effective communication of PrEP and HIVST services among the FSWs since it has to do with social media platforms. For those KPs who participate in the social media-based peer sessions, electricity outages and battery discharge sometimes limit their ability to participate and receive information via online peer sessions.

Health system-related factors
Key influencers reiterated that KPs tend to be more worried about the confidentiality of the test results, especially when a facility-based confirmatory test is involved. One major challenge in relaying information on HIVST is the perceived breach of privacy. For example, key influencers have witnessed KPs' anxieties in communicating positive test results to the key influencers who may want to refer them to health providers at the facilities for a confirmatory test.
"Even if they take the self-testing kit to their house to test themselves and they come out positive, they will not come out to the facility to tell them you are positive" LAS-KII-PE-01.
Key informants interviewed indicated that KPs experience disrespect from providers, especially when the provider is not a community member, ranging from emotional abuse to delays, denial of services, and a bridge of confidentiality and privacy. KPs opined that poor interpersonal communication behaviors of health providers can drive them away from accessing PrEP and HIVST services or even from attending or following up with services.

"Character, it goes a long way, the way the health providers welcome clients, counsel and interact has a lot to do with health-seeking" CRS-KII-FSW-07. "Sometimes, the health providers talk anyhow to clients. The way you talk to me will make me decide if I want to come back again" CRS-KII-Key influencer-01.
There were also complaints that KPs and their key influencers are not involved in program planningincluding initial and evaluation stages. Key influencers think that incorporating KPs and KPIs opinions would enrich the program's success relating to increasing awareness for the uptake of preventive services.
KP influencers reported limited access to health facilities for referral, coupled with a need for follow-up on the use of the kit, especially in circumstances where the client tests negative and needs to initiate PrEP. In addition, key Influencers complained about poor feedback mechanisms, insisting that KPs do not always return with the feedback of their HIV self-test results, making it difficult to follow up with further PrEP and other HIV services.
"So, the major challenge with self-test kit is that most often when they access this service, they don't always come back with feedbacks" LAS-KII-Key influencer-01.

Socio-cultural factors
KPs expressed fear for social embarrassment and pain associated with usage of ARV for HIV that leads to withdrawal, rejection, and miss opportunities to initiate PrEP among the KPs. There is the concern that their partners and society may inflict emotional and social injuries when found with medicines for PrEP. Some KPs opined that they can trade off life instead of taking PrEP.
"It is just fear -you hear KPs say that they don't want a situation where they will take it because people believe that it is only those that already have HIV infection that supposes to take ARVs-that is their fear" LAS-KII-HCP-01. "Because they will be scared of information, some people believe they should die than knowing it (their status) which will cost them so much" LAS-KII-MSM-05.
There is reported discrimination and harassment of KPs by security agencies in Nigeria. That is one of the reasons the KPs especially, MSM, avoid face-to-face community activities where they could learn about PrEP, HIVST, and other prevention approaches. Discrimination sometimes hinders the MSM group in retaining peer discussions and community-related information on their phones due to security personnel interferences to search people's devices.
"When a policeman sees some of us walking like a girl, all you'll hear is "identify yourself ". If you don't have an ID card, the policeman will go to your phone, abuse and infringe into your right just because of your physical appearance". LAS-KII-Key influencer-02.
The harassment of the MSM community by government authorities requires privacy if they must receive face-to-face messaging.

"Face to face is good but depends on what information you're sharing.
There is something about our community, and we need assurance that when they gather something else will not happen" LAS-FGD-MSM.
Also, KPs opined that the challenge of peer sessions is that since it's a group-based event, some KPs may not open up, thinking there may be information diffusion to wrong personalities.
Some KPs reported that if PrEP and HIVST messages are presented in languages that they are not conversant with, the objective of the communication is defeated. KPs insisted that the design of PrEP and HIVST messaging must consider clients in rural settings.

Socio-economic factors
Some MSM members are unemployed and depend on their families that may not afford the costs or may not want to pay for PrEP and HIVST services. Poor socioeconomic status of KPs may limit attention span during online peer sessions. That may lead to an inability of the KPs to invest in internet data and smartphones to participate in online discussions.
"After approaching them, talking to them and showing them how to use it, the price for getting PrEP and HIVST should not be too high so that people can afford it" LAS-KII-Key influencer-01. "I know that Prep is very expensive. It is not easy to get" LAS-KIIKey influencer-02.
Indirect costs (costs of refreshment and transportation to the venue) associated with participating in peer sessions may hinder the communication of PrEP and HIVST information. Some KPs reported that if the distance to the health facility is very far, they may not want to go there all the time due to indirect costs associated with transportation.

Medication-related factors
The indifference of some KPs also limits the acquisition of PrEP and HIVST information, coupled with concerns of why PrEP has to be taken daily and HIVST conducted routinely. These concerns have also led to discontinuations of PrEP use. Among some KPs, there are still doubts about the efficacy of PrEP in protecting an individual, occasioned by advocacy for the combined use of PrEP and condoms for maximum protection. KPs reported that this tends to be cumbersome in practice but would continue using condoms than PrEP.

Receptiveness to future PrEP and HIVST messages
Quantitative data indicated that about 95.5% FSWs and 88.7% MSM indicated they need to receive PrEP messaging in the future. Similarly, 94.2% of FSWs and 86.7% of MSM were willing to receive HIVST messages in the future. Both FGDs and KIIs elicited reasonable and extreme willingness to receive more information on PrEP and HIVST regardless of the typology of KP. KPs are willing to embrace the messages and are eager to disseminate PrEP and HIVST information within and across their networks.
"I need to have more knowledge about it so that I can relate the information to others" AKS-KII-MSM-09. Most KPs want more information on how to take PrEP, eligibility, clarity on the differences between PrEP and PEP, side effects, and pricing for PrEP.

Preferences for communication channels
The preferred channels to receive PrEP and HIVST messages varied across KP typologies. While the FSWs preferred mainly face-to-face, phone calls, and SMS, the MSM group prefer social media-based channels-What-sApp, Facebook, Instagram, and Twitter. Also, MSMs advocated for other closed social media channels that only admit community members, usually introduced by their peers, including Mangam, Tindre, and Grindre. That is due to their sexual orientation that is stigmatized and criminalized.
"In our community, we are very mobile, almost every community member you see out there is on social media because that's where you meet new people and interact" LAS-KII-MSM-08.
Preference for face-to-face channels was due to the opportunity to ask questions, receive instant feedback, and facilitate understanding. SMS was also not ranked top priority owing to the assumption that the receiver might decide to ignore the messages for a couple of days or may delete them permanently without reading them. SMS might also be subject to misinterpretation. There was no consistent pattern and time to receive HIV preventive messages. However, the frequency of receipt of PrEP and HIVST messaging varied among the respondents. The frequency ranged from daily, weekly, and monthly basis.
Brothel-based FSWs would prefer that their chair ladies act as peer educators, enabled with posters, handbills, and other communication materials to improve their work (Table 5).
For MSMs, the most preferred medium for meeting with a health provider is KP-specific platforms and channels, including the one-stop shops (OSS) that are community-driven and friendly.
"But for me, I think I prefer an NGO that deals with the key population, you don't need to be asked unnecessary questions compared to the general hospitals except in terms of STI" CRS-FGD-MSM.
KPs recommended a disaggregated, targeted communication for maximum coverage and that PrEP and HIVST messaging can be disseminated through churches since almost everyone attends religious gatherings.

Communication with healthcare providers
There was no definite approach to communicating or consulting with health providers identified in this study. Some KPs prefer to meet their health providers faceto-face. Findings indicated that the face-to-face channel facilitates understanding of sensitive health issues or symptoms. However, there are strong indications for telemedicine among some KPs.
"They can call me on the phone if I need anything, I will tell them to come and meet me here" LAS-KII-FSW-01. "WhatsApp messages are perfect because it's convenient. Not seeing doctors face to face. Even when I travel to the village, I can still get my message via WhatsApp without issues". LAS-KII-FSW-03. While some FSWs prefer to meet older male health providers, some prefer to consult middle-aged female health providers who they perceived would maintain confidentiality for the care they provide. "I need a mature male provider because they can understand. You can never hear your secret from someone else-a mature person can keep your secret" LAS-KII-FSW-03.

Expected future content of the PrEP and HIVST messaging
KPs expressed the need for information on how to take PrEP, eligibility, clarification on differences between PrEP and PEP, clarification on any side effects, pricing, for PrEP, price, efficacy, sales point, dosage, available brands. However, Most KPs preferred to received PrEP and HIVST information in multiple languages: English Language or pidgin English, or local dialect.

Discussion
This study found intertwining facilitators and barriers to uptake of PrEP and HIVST services and communication needs of KPs for increased access to the HIV prevention services.
Given the low level of awareness about the HIV prevention services (PrEP and HIVST) among the KPs found in this study, strategic planning is necessary to ensure increased access to PrEP and HIVST information to support Nigeria's pursuit to reduce the incidence of new HIV infection. This finding of a low level of awareness was not surprising since Nigeria is yet to roll out a national strategic plan that will enhance awareness and demand generation for PrEP and HIVST services. Cross-cutting factors that may encourage the implementation of sustainable and targeted strategies that are KP-friendly to acquiring PrEP and HIVST messaging were found. The findings suggest that the dissemination of PrEP and HIVST messages will require a targeted and disaggregated audience. Hence, content should consider the preferences of the KP groups for effective and sustainable impacts [20,21]. Emphasis should be on the specific channels that best attract the attention of the KP groups in dispelling misconceptions, stigma, discrimination, fears, and other barriers that may be contextual to increase the acquisition and use of PrEP and HIVST messages. These findings suggest a well-tailored and implemented national communication strategy with inputs from all key stakeholders, including service providers and end-users [22].
Findings from the key influencers corroborated the thoughts of the KP groups concerning the barriers to acquisition and the use of information to promote PrEP and HIVST behaviour change communication. However, this has been reported in other studies in Nigeria and elsewhere [2,17,23]. It was not surprising that stigma, shame, discrimination limit the acquisition and use of HIV prevention messaging in the study areas. That is because individual behaviours are driven by religion and culture, thereby possibly instigating self-stigma and shame. It is necessary to consider these barriers when designing a robust communication strategy that will support increased awareness and access to PrEP and HIVST services [9] while leveraging ongoing cross-cutting plans in eliminating the barriers.
From this study, KPs can effectively network to increase awareness and access to PrEP and HIVST services in Nigeria, as applied to other settings [20,21]. That is quite encouraging considering the importance of peer influence in producing multiplier effects in behaviours. That will make the peers receptive to the interventions and help reach other peers in their network-especially the hard-to-reach. However, this idea reasonably calls for an opportunity to engage some KPs as champions to increase access to the hidden KPs. Haven established that a total market approach is a vital mechanism to getting the KPs to pay for PrEP and HIVST services [6,22,23], our findings on the receptiveness of KPs to receive PrEP and HIVST messages in the future raises high hopes and corroborates with previous studies [24] since the KPs reported initially receiving messages via multiple channels. Multiple channels, including social media, will provide avenues for programmers and key influencers to reinforce messages on future financing plans for PrEP and HIVST when necessary.
This study found that KPs who visit OSS or whose friends visit OSS were more likely to be aware of PrEP than other community members. Therefore, health care providers and key influencers should be ready to provide all-encompassing messaging that will lead to positive behavior change. The contents of the future PrEP and HIVST messaging should reflect the views of the KPs in terms of access points, pricing, efficacy, available brand, among others [8,15,25].

Limitations
This study was formative and conducted only in three states of the federation-Akwa Ibom, C/River, and Lagos and did not represent opinion across the six geopolitical zones. A scale-up of the research across all geopolitical zones and a survey to quantify the prevalence would help understand the dynamics and prioritization of interventions for scaling up PrEP and HIVST services in Nigeria.
During the data collection period, it was difficult to reach the non-brothel-based FSWs to elicit their opinion. Therefore, further research should document the preferences of the non-brothel-based KPs and ensure it reflects in the national communication strategy.

Conclusion
The policy actors should consider the preferences of the KPs and the key influencers in reducing barriers to communication and increasing the uptake of PrEP and HIVST services and ensure it reflects in a tailored communication strategy. Since multi-linguistics and multi-channels of presentation were enablers to acquiring PrEP and HIVST messages, the communications strategy for HIV prevention should incorporate these recommendations and adapt to context-specific approaches for effective messaging. Understanding that peer influence is essential in propagating PrEP and HIVST messages, program managers should explore avenues that produce multiplier effects in behaviour change in rolling out the tailored communication strategy while maintaining the confidentiality of information and purpose. Parallel programs targeted at increasing uptake of PrEP and HIVST messaging