HealthDay News – According to a study published in the July 23 issue of the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report, the circulation of respiratory viruses, including influenza and respiratory syncytial virus, was slow during COVID 19 pandemic low.
Sonja J. Olsen, Ph.D., of the CDC in Atlanta, and colleagues describe changes in the activity of influenza and other respiratory viruses during the COVID-19 pandemic.
The researchers note that influenza activity in the United States decreased in March 2020, was historically low by summer 2020, and remained low from October 2020 to May 2021. including the respiratory syncytial virus, the common human coronaviruses types OC43, NL63, 229E and HKU1 and the parainfluenza viruses types 1 to 4, which only increased in spring 2021 to May 2021. Circulated during the course of 2020 and from the beginning of May 2021 the respiratory adenovirus in smaller quantities. In March 2020, the rhinovirus and enterovirus circulation decreased, remained low until May 2020, and then rose to almost prepandemic seasonal levels.
“Clinicians should be aware that respiratory viruses may not exhibit typical seasonal circulatory patterns and that certain respiratory viruses may resume circulation,” the authors write. “A better understanding of the role non-pharmaceutical interventions play in the dynamics of respiratory virus transmission can serve as a guide for future prevention recommendations.”
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COVID19 General Infectious Diseases General Medicine