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CDC ZOHU call highlights screwworm outbreak, H5N1 detection in bovine semen, and salmonella linked to backyard poultry
Summary
Colin Basler (CDC One Health Office) used the June ZOHU call to highlight ongoing response to a New World screwworm outbreak, recent publications including H5N1 RNA detected in bovine semen, and active salmonella investigations tied to backyard poultry and pet chameleons, with links and resources shared via the ZOHU newsletter.
Colin Basler, deputy director of CDC’s One Health Office, opened the June ZOHU webinar with brief updates and resource links for practitioners.
"CDC continues to work closely with the US Department of Agriculture, the Department of Interior, and many other governmental and non‑governmental partners to respond to an outbreak of New World screwworm in the United States, Central America, and Mexico that can impact livestock, companion animals, wildlife, and people," Basler said, directing listeners to USDA, CDC, and the whole‑of‑government site screwworm.gov for the latest information.
Basler highlighted recent publications in the ZOHU newsletter, including a May 2026 MMWR backyard flock survey and a study reporting highly pathogenic avian influenza H5N1 RNA in bovine semen. He also pointed attendees to interim guidance for assessment and management of travelers from countries affected by Ebola and to a COCA Call that reviewed clinical considerations for Ebola Bundibugyo.
He noted ongoing outbreak investigations, specifically a salmonella cluster linked to backyard poultry and a separate salmonella event tied to pet veiled chameleons, and suggested clinicians and veterinarians consult CDC's Healthy Pets Healthy People website for guidance and outbreak pages.
Basler listed upcoming observances and meetings (National Pollinator Week, Mosquito Control Week, and the Pennsylvania One Health Consortium meeting in Harrisburg, Pennsylvania) and encouraged subscription to the ZOHU Call newsletter for resource links and notice when the recorded webinar is posted.
The webinar host reminded attendees that this session is being recorded and that continuing education is available through CDC Train for a limited on‑demand period.
For practitioners seeking details and follow‑up materials, Basler and the ZOHU team advised using the ZOHU Call webpage and newsletter for links to publications and advisory notices.
