Reasons for PrEP Discontinuation After Navigation at Sexual Health Clinics: Interactions Among Systemic Barriers, Behavioral Relevance, and Medication Concerns.

Background: Pre-exposure prophylaxis (PrEP) for HIV prevention requires engagement throughout the PrEP care continuum. Using data from a PrEP navigation program, we examine reasons for PrEP discontinuation.

Setting: Participants were recruited from New York City Health Department Sexual Health Clinics with PrEP navigation programs.

Predictors of Human Papillomavirus Vaccine Completion Among Female and Male Vaccine Initiators in Family Planning Centers.

Objectives: We estimated human papillomavirus (HPV) vaccine series completion and examined predictors of completion among adolescents and young adults in a large family planning network.

Methods: Our retrospective cohort study of vaccine completion within 12 months and time to completion used electronic health record data from 119 Planned Parenthood health centers in 11 US states for 9648 patients who initiated HPV vaccination between January 2011 and January 2013.

Results: Among vaccine initiators, 29% completed the series within 12 months.