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Research

Estimating herd immunity thresholds for hepatitis A: A 16-state analysis to inform vaccination strategies among people who inject drugs (PWID)

This fact sheet discusses how research from the University of California San Diego and published in Clinical Infectious Diseases, estimates the hepatitis A vaccination coverage needed to prevent outbreaks among people who inject drugs (PWID). Analyzing surveillance data from 16 states with recent hepatitis A outbreaks linked to PWID, the study found that vaccination coverage of at least 80% may be necessary to reliably achieve herd immunity—though some states, such as West Virginia, may require higher levels.

AIDSVu Location Profiles: A Walkthrough - Understanding HIV in Atlanta

This video walks through AIDSVu Location Profiles -- interactive, user-friendly summaries of HIV data for various locations across the U.S., including cities, counties, states, and regions. These profiles provide insights into HIV prevalence, new diagnoses, mortality, and more, helping users understand the impact of HIV in their communities.