Familial Clusters of Coronavirus Disease in 10 Prefectures, Japan, February-May 2020.

Miyahara, Reiko; Tsuchiya, Naho; Yasuda, Ikkoh; Ko, Yura K; Furuse, Yuki; Sando, Eiichiro; Nagata, Shohei; Imamura, Tadatsugu; Saito, Mayuko; Morimoto, Konosuke; Imamura, Takeaki; Shobugawa, Yugo; Nishiura, Hiroshi; Suzuki, Motoi; Oshitani, Hitoshi

Miyahara, Reiko; Tsuchiya, Naho; Yasuda, Ikkoh; Ko, Yura K; Furuse, Yuki; Sando, Eiichiro; Nagata, Shohei; Imamura, Tadatsugu; Saito, Mayuko; Morimoto, Konosuke; Imamura, Takeaki; Shobugawa, Yugo; Nishiura, Hiroshi; Suzuki, Motoi; Oshitani, Hitoshi.

Emerg Infect Dis ; 27(3): 915-918, 2021 03.

Article in English | MEDLINE | ID: covidwho-1100023

ABSTRACT

ABSTRACT

The overall coronavirus disease secondary attack rate (SAR) in family members was 19.0% in 10 prefectures of Japan during February 22-May 31, 2020. The SAR was lower for primary cases diagnosed early, within 2 days after symptom onset. The SAR of asymptomatic primary cases was 11.8%.

Subject(s)

COVID-19/epidemiology; Family; Asymptomatic Infections/epidemiology; COVID-19/diagnosis; COVID-19/transmission; Contact Tracing/statistics & numerical data; Female; Humans; Incidence; Japan/epidemiology; Male; SARS-CoV-2/isolation & purification; Time Factors

Keywords

COVID-19; Japan; SARS-CoV-2; coronavirus disease; familial clusters; prefectures; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Family / COVID-19 Type of study: Diagnostic study / Observational study Limits: Female / Humans / Male Country/Region as subject: Asia Language: English Journal: Emerg Infect Dis Journal subject: Communicable Diseases Year: 2021 Document Type: Article

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