Introduction: Traditionally, Prevention of Maternal-to-Child Transmission (PMTCT) of HIV involves women and excludes men despite their important roles. There is a need for more data on factors influencing male participation in PMTCT programs. Design: This was a cross-sectional, descriptive study of married HIV-positive men receiving care at the adult ART clinic, 68 Nigerian Army Reference Hospital Yaba. Data were collected from March 15 to April 30, 2018. Result: Out of the 366 respondents, 333 (91%) were aware that HIV can be transmitted from mother to child. However, only 43.2% correctly identified that it can be transmitted during pregnancy, while 30.2% stated during labour. Almost all of the respondents (96.4%) would also accept that their positive partners take antiretroviral treatment to protect her unborn baby, 86.9% would support non breastfeeding option after delivery, and 95.6% indicated readiness to buy formula milk for the baby. Similarly, majority believed that a pregnant woman can be tested for HIV without the permission of her partner (Mean = 1.47 ± 0.893), and that men should accompany their spouse to ANC/PMTCT clinics (Mean = 1.86 ± 0.921). Conclusion: This study revealed that despite low knowledge of PMTCT among men, there is a good level of attitude and involvement among them. We recommend further study to fully explore the impact of education on men's participation.

Introduction: The prevention of mother-to-child transmission (PMTCT) plays a major role in limiting the number of children being infected by HIV. There is dearth of studies that explored the knowledge of HIV transmission and PMTCT among women living with HIV. Methods: This was a cross-sectional, descriptive study of HIV-positive mothers receiving medical care at the adult antiretroviral therapy (ART) clinic, 68 Nigeria Army Reference Hospital Yaba. A pre-tested structured questionnaire was used to collect information from the subjects concerning their socio-demographic, knowledge of HIV transmission and mother-to-child transmission of HIV and preventive measures. SPSS v23 was used for data analysis. Results: Out of the 374 participants, 282 (75.4%) were aware that HIV can be transmitted to an unborn baby from the positive mother. Of these, 240 (85.1%) were well-informed that increase mother's viral load can increase the chances of mother-to-child transmission. 268 (95%) understood that giving of antiretroviral drugs during and after pregnancy can lower transmission risk, while 254 (90.1%) saw the use of breast milk substitutes as another prevention strategy. There was statistically significant association between the respondents' knowledge of PMTCT and their husbands'/partners' awareness of their HIV status. Conclusion: In conclusion, our study demonstrated a good knowledge of HIV transmission, MTCT and PMTCT among women who were receiving ART in our centre.