RSV levels in Marin County soared ‘five-fold’ in past 2 weeks, prompting health warning

by Gabe Agcaoili, Bay City News November 6, 2023November 6, 2023

This highly-magnified, 1981 transmission electron microscopic (TEM) image, reveals some of the morphologic traits exhibited by a human respiratory syncytial virus (RSV). The virion is variable in shape, and size, with an average diameter between 120-300nm. RSV is the most common cause of bronchiolitis and pneumonia among infants and children, under 1-year of age. (E. L. Palmer/CDC via Bay City News)

Levels of respiratory syncytial virus or RSV in Marin County increased significantly in the past two weeks, according to county health officials.

RSV levels detected in the county wastewater increased “five-fold” during that period, the Marin Health and Human Services said in a statement Friday.

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