Morbidity and Mortality Weekly Report

Diseases, Conditions, Syndromes

Almost 3,000 cases of West Nile virus reported in U.S. in 2021

In 2021, there were 3,035 reports of arthropod-borne viruses (arboviruses) in the United States, including 2,911 caused by West Nile virus, according to research published in the August 25 issue of the U.S. Centers for Disease ...

Diseases, Conditions, Syndromes

Long COVID symptoms can emerge months after infection

Long COVID can persist for at least a year after the acute illness has passed, or appear months later, according to the most comprehensive look yet at how symptoms play out over a year.

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