Adolescent men who have sex with men (MSM) are at increased risk for sexually transmitted infections (STIs) and HIV; however, data documenting STI screening, STI burden, and associated risk factors for STIs are extremely limited. Using 2015 data from the National HIV Behavioral Surveillance among Young MSM, we examined self-reported STI screening and STI diagnosis of chlamydia, gonorrhea, or syphilis among sexually active adolescent MSM by selected characteristics. Analysis of STI diagnosis was limited to participants who reported an STI screening. Differences in STI screening and STI diagnosis and factors associated with screening and diagnosis were examined using bivariate and multivariable binomial regression models. Less than half of adolescent MSM reported having ever been screened for an STI. Among these, more than a quarter reported having ever been diagnosed with chlamydia, gonorrhea, or syphilis. STI screening was associated with visiting a healthcare provider in the past 12 months and having ever been tested for HIV. Having ever had an STI diagnosis was associated with the participant age of 18 years and having sex before 13 years old. Among adolescent MSM, STI screening was suboptimal and STI burden was significant. STI intervention and prevention programs are urgently needed to promote STI awareness, timely screening, and early diagnosis to interrupt transmission among this vulnerable population.

Background:The WHO recommends vaccines for prevention and control of typhoid fever, especially where antimicrobial-resistant typhoid circulates. In 2018 the Navi Mumbai Municipal Corporation (NMMC), implemented a TCV campaign. The campaign targeted all children aged 9-months through 14-years within NMMC boundaries (~320,000 children) over 2 vaccination phases. The phase 1 campaign occurred from July 14-August 25, 2018 (71% coverage, ~113,420 children). We evaluated the campaign's programmatic effectiveness in reducing typhoid cases at the community level.Methods:We established prospective, blood culture-based surveillance at 6 hospitals in Navi Mumbai, offering blood cultures to children presenting with fever for at least 3 days. We employed a cluster-randomized test-negative design to estimate the effectiveness of the vaccination campaign on pediatric typhoid cases. We matched culture-confirmed typhoid cases with up to 3 culture-negative controls by age and date of blood culture and assessed community vaccine campaign phase as an exposure using conditional logistic regression.Results:Between September 1, 2018-March 31, 2021, we identified 81 typhoid cases and matched these with 238 controls. Cases were 0.44 times as likely to live in vaccine campaign communities (campaign effectiveness, 56%, 95%CI: 25%-74%, p=0.002). Cases ≥ 5-years-old were 0.37 times as likely (95% CI: 0.19-0.70; p-value = 0.002) and cases during the first year of surveillance were 0.30 times as likely (95% CI: 0.14-0.64; p-value = 0.002) to live in vaccine campaign communities.Conclusions:Our findings support the use of TCV mass vaccination campaigns as effective population-based tools to combat typhoid fever.