Diseases, Conditions, Syndromes

Five things to know about bird flu

As a new virus takes center stage at the heart of a global outbreak, it's easy to get flashbacks of March 2020.

Vaccination

French, US drug firms team up for Covid-flu shot

French pharmaceutical giant Sanofi and struggling US rival Novavax announced Friday an alliance to sell a COVID vaccine and develop another that combines with a flu shot.

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