A multi-family cluster of COVID-19 associated with asymptomatic and pre-symptomatic transmission in Jixi City, Heilongjiang, China, 2020.
We investigated a multi-family cluster of 22 cases in Jixi, where pre-symptomatic and asymptomatic transmission resulted in at least 41% of household infections of SARS-CoV-2. Our study illustrates the challenge of controlling COVID-19 due to the presence of asymptomatic and pre-symptomatic transmission even when extensive testing and contact tracing are conducted.
['Zhang|Hongyang|H|', 'Hong|Chengcheng|C|https://orcid.org/0000-0001-6080-050X', 'Zheng|Qulu|Q|', 'Zhou|Pengzheng|P|', 'Zhu|Yuliang|Y|', 'Zhang|Zhongkai|Z|', 'Bi|Qifang|Q|', 'Ma|Ting|T|']
D000328:Adult D058070:Asymptomatic Diseases D000086382:COVID-19 D000086742:COVID-19 Testing D002648:Child D002681:China D016358:Contact Tracing D005190:Family D005260:Female D006801:Humans D008297:Male D058873:Pandemics D011634:Public Health D011790:Quarantine D020133:Reverse Transcriptase Polymerase Chain Reaction D000086402:SARS-CoV-2 D012720:Severity of Illness Index D011795:Surveys and Questionnaires
cluster COVID-19 pre-symptomatic transmission Asymptomatic transmission contact tracing household close contact