Human Parainfluenza Virus in Homeless Shelters before and during the COVID-19 Pandemic, Washington, USA

Emerg Infect Dis. 2022 Nov;28(11):2343-2347. doi: 10.3201/eid2811.221156. Epub 2022 Sep 23.


To determine the epidemiology of human parainfluenza virus in homeless shelters during the COVID-19 pandemic, we analyzed data and sequences from respiratory specimens collected in 23 shelters in Washington, USA, during 2019-2021. Two clusters in children were genetically similar by shelter of origin. Shelter-specific interventions are needed to reduce these infections.

Keywords: COVID-19; HPIV; King County; SARS-CoV-2; United States; Washington; coronavirus disease; epidemiology; homeless shelters; human parainfluenza virus; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.

Publication types

  • Research Support, U.S. Gov't, P.H.S.
  • Research Support, N.I.H., Extramural

MeSH terms

  • COVID-19* / epidemiology
  • Child
  • Humans
  • Ill-Housed Persons*
  • Pandemics
  • Paramyxoviridae Infections* / epidemiology
  • Washington / epidemiology