I Ran Operation Warp Speed. I’m Concerned About Bird Flu.

Dr. Kessler was commissioner of the Food and Drug Administration during the George H.W. Bush and Clinton administrations and was the Biden administration’s chief science officer during Covid-19.

As Donald Trump gets ready to return to the White House on Jan. 20, he must be prepared to tackle one issue immediately: the possibility that the spreading avian flu might mutate to enable human-to-human transmission.

I was the Biden administration’s chief science officer during Covid-19. I was a 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. One of my jobs was to assess the trajectory of the virus.

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. My concern is growing.

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