Secondary Attack Rate among Non-Spousal Household Contacts of Coronavirus Disease 2019 in Tsuchiura, Japan, August 2020–February 2021
Bibliographic Data
| ID | 15501470 |
|---|---|
| Authors | Tsuyoshi Ogata (0000-0002-3261-888X, Osaka Prefectural Government, corresponding author), Fujiko Irie (0000-0002-9074-2213, Osaka Prefectural Government), E Ogawa (Osaka Prefectural Government), Shifuko Ujiie (Osaka Prefectural Government), Aina Seki (Osaka Prefectural Government), Koji Wada (0000-0002-7278-7514, International University of Health and Welfare), Harumi Tanaka (0000-0001-9033-0035, Osaka Prefectural Government) |
| Year | 2021 |
| Volume | 18 |
| Issue | 17 |
| Pages | 8921-8921 |
| Publication date | 2021-08-25 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph18178921 |
| PMID | 34501511 |
| OpenAlex | W3195807342 |
| Language | EN |
| Citations received | 2 |
| References cited | 5 |
Household secondary attack rate (HSAR) by risk factor might have a higher transmission rate between spouses. We investigated risk factors for the HSAR among non-spousal household contacts of patients with coronavirus disease 2019 (COVID-19). We studied household contacts of index cases of COVID-19 in Tsuchiura, Japan, from August 2020 through February 2021. The HSARs of the whole household contacts and non-spousal household contacts were calculated and compared across risk factors. We used a generalized linear mixed regression model for multivariate analysis. We enrolled 496 household contacts of 236 index COVID-19 cases. The HSAR was higher for spousal household contacts (37.8%) than for other contacts (21.2%). The HSAR was lower for non-spousal household contacts with a household size (number of household members) of two (18.2%), compared to the HSAR for contacts with a household size ≥4. The HSAR was higher for non-spousal household contacts of index patients with ≥3 days of diagnostic delay (period between onset and diagnosis) (26.0%) compared to those with ≤2 days' delay (12.5%) ( p = 0.033). Among non-spousal household contacts, the HSAR was low for those with a household size of two and was high for contacts of index patients with a long diagnostic delay
Contact tracing · Coronavirus disease 2019 (COVID-19 · Disease · Environmental health · Index (typography · Index case · Infectious disease (medical specialty · Multivariate analysis · Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 · Transmission (telecommunications · COVID-19 and Mental Health · COVID-19 epidemiological studies · Demography · Medicine · Viral Infections and Outbreaks Research · Internal Medicine
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| Citations per year | 0.5 |
|---|---|
| Citation span | 2022 - 2022 (1) |
| Highly cited | No |