Reported percentages of positive parainfluenza virus tests in the United States, 2016 to 2021
Reported percentages of positive parainfluenza virus tests in the United States, 2016 to 2021
The number of specimens tested and the percentage of tests positive for parainfluenza reported to the National Respiratory and Enteric Viruses Surveillance System (NREVSS) in the United States, by year, 2016 to 2021.
Reproduced from: Olsen SJ, Winn AK, Budd AP, et al. Changes in influenza and other respiratory virus activity during the COVID-19 pandemic — United States, 2020–2021. MMWR Morb Mortal Wkly Rep 2021; 70:1013.
