I was co-leader of Operation Warp Speed, which began in Mr. Trump’s first term to accelerate the development of Covid-19 vaccines. I worked on the purchase and rollout of hundreds of millions of vaccines and on developing antiviral treatments. Now I am back at my job teaching at the medical school at the University of California, San Francisco. I have been monitoring the spread of bird flu, also known as H5N1, and discussing the situation with colleagues around the country. In addition, a child in Alameda County in California with minor respiratory symptoms tested positive for H5N1 recently; it is unclear how the child became infected.

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Persons: Donald Trump, Biden, Trump’s Organizations: White, Biden administration’s, University of California Locations: San Francisco, United States, Alameda County, California