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Who might benefit from a 4th shot — and who might not

Staff volunteers queue to receive a fourth dose of the Pfizer COVID-19 vaccine at Sheba Medical Center in Israel on Dec. 27, 2021, as the hospital conducted a trial of a fourth jab of the vaccine. Jack Guez/AFP via Getty Images hide caption

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Jack Guez/AFP via Getty Images

Goats and Soda

Who might benefit from a 4th shot — and who might not

February 22, 2022 • Some countries are moving ahead with plans to offer a fourth dose of COVID-19 vaccine. But studies are raising questions about the potential advantages of this extra booster.

Fact check: The theory that SARS-CoV-2 is becoming milder

This colorized transmission electron micrograph image shows SARS-CoV-2, the coronavirus that causes the disease COVID-19. This specimen was isolated from a patient in the United States. Particles of the virus (yellow) are emerging from the surface of cells cultured in the lab (pink). Science Source hide caption

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Science Source

Goats and Soda

Fact check: The theory that SARS-CoV-2 is becoming milder

January 14, 2022 • A look at the data that omicron is less severe. What does that mean for the future of SARS-CoV-2 — and the pandemic?