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Volume 28, Number 11—November 2022
Research Letter

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

Eric J. ChowComments to Author , Amanda M. Casto, Reigran Sampoleo, Margaret G. Mills, Peter D. Han, Hong Xie, Brian Pfau, Tien V. Nguyen, Jaydee Sereewit, Julia H. Rogers, Sarah N. Cox, Melissa A. Rolfes, Constance Ogokeh, Emily Mosites, Timothy M. Uyeki, Alexander L. Greninger, James P. Hughes, M. Mia Shim, Nancy Sugg, Jeffrey S. Duchin, Lea M. Starita, Janet A. Englund, Pavitra Roychoudhury, and Helen Y. Chu
Author affiliations: University of Washington, Seattle, Washington, USA (E.J. Chow, A.M. Casto, R. Sampoleo, M.G. Mills, P.D. Han, H. Xie, B. Pfau, T.V. Nguyen, J. Sereewit, J.H. Rogers, S.N. Cox, A.L. Greninger, J.P. Hughes, M.M. Shim, N. Sugg, J.S. Duchin, L.M. Starita, P. Roychoudhury, H.Y. Chu); Fred Hutchinson Cancer Research Center, Seattle (A.M. Casto, A.L. Greninger, J.P. Hughes, P. Roychoudhury); Brotman Baty Institute for Precision Medicine, Seattle (P.D. Han, H. Xie, B. Pfau, L.M. Starita); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (M.A. Rolfes, C. Ogokeh, E. Mosites, T.M. Uyeki); Military and Health Research Foundation, Laurel, Maryland, USA (C. Ogokeh); Public Health Seattle and King County, Seattle (M.M. Shim, J.S. Duchin); University of Washington Seattle Children’s Research Institute, Seattle (J.A. Englund)

Main Article

Table

Human parainfluenza virus detection across 23 homeless shelters, King County, Washington, USA, October 2019‒May 2021*

Time period Type of shelter Total Human parainfluenza virus, no. (%) positive Human parainfluenza virus types
Before April 1, 2020
 Shelters: family (sites D, E, O) 303 16 (5.3) HPIV-1, n = 5; HPIV-3, n = 6; HPIV-4, n = 5;
Shelters: adults 18–25 y (site C) 89 1 (1.1) HPIV-1, n = 1
Shelters: adults >18 y (sites A, B, F, L) 845 3 (0.4) HPIV-1, n = 2; HPIV untyped, n = 1
Shelters: adults >50 y (site M)
 453
 3 (0.7)
 HPIV-1, n = 2; HPIV untyped, n = 1
After April 1, 2020
 Shelters: family (sites: D, E, H, N, O, OF, OG) 4,764 8 (0.2) HPIV-3, n = 5; HPIV untyped, n = 3
Shelters: adults 18–25 y (sites C, OH) 1,228 0 NA
Shelters: adults >18 y (sites A, B, F, G, J, K, L, OB, OD) 6,078 1 (0.02) HPIV untyped, n = 1
Shelters: adults >50 y (sites I, M, OA, OC, OE)
 661
 0
 NA
Total
 14,421† 32 (0.2) HPIV-1, n = 10; HPIV-3, n = 11; HPIV-4, n = 5; HPIV untyped, n = 6

*A Washington State Stay-At-Home ordinance we issued on March 23, 2020. HPIV, human parainfluenza virus; NA, not available. †n = 43 encounters for which dates were missing were not included (none involved human parainfluenza-positive specimens).

Main Article

Page created: September 02, 2022
Page updated: October 24, 2022
Page reviewed: October 24, 2022
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