Hepatitis C viral clearance (or cure) rates fell below established federal elimination goals in all states, with rates among people diagnosed with hepatitis C ranging from 10% to 51% by state.
During a varicella outbreak among people staying at New York City shelters and residential facilities who recently arrived in New York City, most cases (53%) occurred in children and teens aged 4–18 years, and most (92%) occurred in people with no documentation of varicella vaccination.
A large outbreak of West Nile virus occurred in 2021; no similar outbreak occurred in 2022. However, 827 patients with West Nile virus had neuroinvasive disease (encephalitis or meningitis), of which 93% were hospitalized and 11% died.
Early findings suggest the safety of the RSV vaccine (GSK and Pfizer) is consistent with vaccine safety data seen in clinical trials among adults 60 and older, including the observance of a higher-than-expected number of verified cases of Guillain-Barré syndrome.
In April 2024, avian influenza A(H5N1) virus was detected in one U.S. farm worker during a multistate outbreak in dairy cows. As of May 22, more than 350 people with exposure to dairy cattle and/or infected raw (unpasteurized) cow's milk have been monitored.
The latest MMWR Weekly Briefing is live. Topics include: Shiga toxin-producing E. coli in Utah, travel-associated malaria along the southern U.S. border, and more. Listen and subscribe on: Apple Podcasts and Spotify.
