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When Pfizer CEO Albert Bourla said March 13 that all Americans would need a second booster shot, it struck many covid experts as a self-serving remark without scientific merit. It also set off spasms of doubt over the country’s objectives in its fight against the coronavirus. The decision on how often and widely to vaccinate against covid-19 is part science, part policy, and part politics. Ultimately it depends on the goals of vaccination at a time when it’s becoming clear that neither vaccines nor other measures can entirely stop the viral spread. On March 15, Pfizer made a more limited ...

A corporate CEO’s call for a fourth mRNA shot struck those closely watching the pandemic as self-serving. It creates public pressure for a fourth dose of vaccine before government experts have time to assess the evidence and settle on the best course forward.

When Pfizer CEO Albert Bourla said March 13 that all Americans would need a second booster shot, it struck many covid experts as a self-serving remark without scientific merit. It also set off spasms of doubt over the country's objectives in its fight against the coronavirus.

Highlights from the Washington Post, the New York Times, NPR’s “Morning Edition” and others.

Pfizer CEO Albert Bourla has suggested all people will need second COVID-19 booster shots. But though vaccine protection against infections wanes within several months, it still protects against severe illness and death. Scientists have mixed beliefs on whether annual COVID-19 shots will be needed.