Abstract < /h3 > < span class= " a-plus-plus abstract-section id-a-sec1 " > < h3 class= " a-plus-plus " > Purpose of Review < /h3 > < p class= " a-plus-plus " > Challenges in treatment and prevention remain for pediatric human immunodeficiency virus type 1 (HIV-1) infection as well as increasing concerns for HIV-1 exposed but uninfected infants. < /p > < /span > < spa..."> Abstract < /h3 > < span class= " a-plus-plus abstract-section id-a-sec1 " > < h3 class= " a-plus-plus " > Purpose of Review < /h3 > < p class= " a-plus-plus " > Challenges in treatment and prevention remain for pediatric human immunodeficiency virus type 1 (HIV-1) infection as well as increasing concerns for HIV-1 exposed but uninfected infants. < /p > < /span > < spa..." /> Abstract < /h3 > < span class= " a-plus-plus abstract-section id-a-sec1 " > < h3 class= " a-plus-plus " > Purpose of Review < /h3 > < p class= " a-plus-plus " > Challenges in treatment and prevention remain for pediatric human immunodeficiency virus type 1 (HIV-1) infection as well as increasing concerns for HIV-1 exposed but uninfected infants. < /p > < /span > < spa..." />