David A. Kessler

Dr. David A. Kessler took over Operation Warp Speed when President Biden entered office, and his departure signals the end of the program.

He spent his life trying to dodge his own mortality, resistant but haunted by its specter.

Injections of the Johnson & Johnson coronavirus vaccine came to a sudden halt this week in the United States after a small number of rare blood clots emerged, though it is unclear if the shot was responsible.

Read more about the plans by top officials to move toward something resembling normalcy.

Dr. David Kessler, who helped speed the development and approval of AIDS drugs in the 1990s, will become the top science official for the initiative the Trump administration had called Operation Warp Speed.

President-elect Joseph R. Biden Jr. named a panel of health care experts to draft policies to address the coronavirus pandemic, as he implored Americans to wear masks.

The couple met in 2014 while working on food policy issues at the Pew Charitable Trusts in Washington, and began dating two years later.

Examining the root of behaviors like obsession and addiction.

The notion that patients would not become addicted to opioids has proved to be one of the biggest mistakes in modern medicine.

The 21st Century Cures Act could substantially lower the standards for approval of many medical products, potentially placing patients at unnecessary risk.