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SARS-CoV-2 Variants and Age-Dependent Infection Rates among Household and Nonhousehold Contacts

2023; Centers for Disease Control and Prevention; Volume: 29; Issue: 8 Linguagem: Inglês

10.3201/eid2908.221582

1080-6059

Reiko Miyahara, Kosuke Tamura, Tomoko Kato, Mineko Nakazaki, Kanako Otani, Yura K Ko, Taro Kamigaki, Yuzo Arima, Hideki Tani, Kazunori Oishi, Motoi Suzuki,

COVID-19 and Mental Health

To determine the effects of age and variants of concern on transmission of SARS-CoV-2, we analyzed infection rates among close contacts over 4 periods in Toyama Prefecture, Japan. Among household contacts, odds of infection were 6.2 times higher during the period of the Omicron variant than during previous periods, particularly among children and adolescents.