Among the other 172 individuals at the worship event, 7 (4.1%) subsequently received a COVID-19 diagnosis. Meanwhile, none of the 60 individuals in bus 1 were infected. On bus 2, 24 of the 68 individuals (35.3% ) received a diagnosis of COVID-19 after the event. Results Of the 128 participants, 15 (11.7%) were men, 113 (88.3%) were women, and the mean age was 58.6 years. Attack rates for SARS-CoV-2 infection were calculated for different groups, and the spatial distribution of individuals who developed infection on bus 2 was obtained. Main Outcomes and Measures SARS-CoV-2 infection was confirmed by reverse transcription polymerase chain reaction or by viral genome sequencing results. In both buses, central air conditioners were in indoor recirculation mode. We also divided seats on the exposed bus into high-risk and low-risk zones according to the distance from the source patient and compared COVID-19 risks in each zone. We compared risks of SARS-CoV-2 infection among at-risk individuals taking bus 1 (n = 60) and bus 2 (n = 67 ) and among all other individuals (n = 172) attending the worship event. The source patient was a passenger on bus 2. On January 19, 2020, 128 individuals took 2 buses (60 from bus 1 and 68 from bus 2) on a 100-minute round trip to attend a 150-minute worship event. Objective To investigate potential transmission routes of SARS-CoV-2 infection with epidemiologic evidence from a COVID-19 outbreak.ĭesign, Setting, and Participants This cohort study examined a community COVID-19 outbreak in Zhejiang province. ![]() Importance Evidence of whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (COVID-19), can be transmitted as an aerosol (ie, airborne) has substantial public health implications. Shared Decision Making and Communication.Scientific Discovery and the Future of Medicine.Health Care Economics, Insurance, Payment. ![]() Clinical Implications of Basic Neuroscience.Challenges in Clinical Electrocardiography.
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