Prevention of COVID-19 superspreading events in buses boarded by presymptomatic cases.

Autor:	Ochoa-Hein E; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Huertas-Jiménez MA; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Chávez-Ríos AR; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Haro-Osnaya A; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Paz-García R; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Colín-Ugalde AG; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Leal-Morán PE; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Vargas-Fernández AT; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Vargas-Fernández JF; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., González-González R; Subdirectorate of Hospital Epidemiology and Medical care Quality Control., Rajme-López S; Department of Infectious Diseases., González-Lara MF; Department of Infectious Diseases., Ponce-de-León A; Department of Infectious Diseases., Sifuentes-Osornio J; Department of Medicine; Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico., Galindo-Fraga A; Subdirectorate of Hospital Epidemiology and Medical care Quality Control.
Jazyk:	angličtina
Zdroj:	Gaceta medica de Mexico [Gac Med Mex] 2022; Vol. 158 (4), pp. 196-201.
DOI:	10.24875/GMM.M22000678
Abstrakt:	Introduction: COVID-19 superspreader events have occurred when symptomatic individuals without wearing face masks boarded buses. Objective: To report the risk of superspreader events when presymptomatic individuals boarded buses to-gether with unvaccinated passengers, but with non-pharmacological preventive interventions being maintained. Methods: Prospec-tive study of health personnel transported in buses to a COVID-19 vaccination center for two weeks. Open windows, correct use of face masks and exclusion of symptomatic individuals were mandatory. Prospective surveillance identified workers with COVID-19 within 14 days after vaccination. Each asymptomatic passenger of buses where cases were identified was monitored for a similar time period. Voluntary screening results were available for workers who were tested in the month before or after vaccination. Results: 1,879 workers boarded 65 buses. On-board time ranged from three to eight hours. Twenty-nine cases of COVID-19 and four asymptomatic cases were identified among 613 passengers of 21 buses. Median time between vaccina-tion and COVID-19 symptoms onset was six days. One case of suspected transmission on a bus was identi-fied. Conclusions: Strict nonpharmacological preventive interventions substantially reduced the risk of COVID-19 super-spreader events in buses boarded by presymptomatic individuals. (Copyright: © 2022 Permanyer.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu