Analysis of Concentrated COVID-19 Outbreaks in Elderly Facilities in Suita City, Osaka Prefecture, Japan

Toshiyuki Shibata, Sawa Okano, Daisuke Onozuka, Etsuko Ohta and Satoshi Kutsuna ()
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Toshiyuki Shibata: Suita City Public Health Center, Suita 564-0072, Japan
Sawa Okano: Suita City Public Health Center, Suita 564-0072, Japan
Daisuke Onozuka: Department of Infection Prevention and Control, Osaka University Hospital, Suita 565-0871, Japan
Etsuko Ohta: Department of Infection Prevention and Control, Osaka University Hospital, Suita 565-0871, Japan
Satoshi Kutsuna: Department of Infection Prevention and Control, Osaka University Hospital, Suita 565-0871, Japan

IJERPH, 2023, vol. 20, issue 20, 1-10

Abstract: There are several types of facilities for elderly individuals in Japan. Infection control efforts, such as care provision and medical care access, differ according to the type of facility. Elderly individuals at these facilities who were infected with coronavirus disease 2019 (COVID-19) experienced severe illness and mortality. This study aimed to determine the characteristics of concentrated COVID-19 outbreaks that occurred in nursing homes and care facilities in Suita City. During this study, twenty-five elderly facilities in Suita City with a capacity of 40 or more individuals where an outbreak occurred during the sixth or seventh wave of infection were included. We investigated whether there was a difference in the COVID-19 incidence and the percentage of positive cases according to the type of facility. We also investigated the relationship between the facility capacity and positive case rate and that between the number of positive cases and outbreak duration. The incidence rate of COVID-19 was significantly different according to the facility type ( p < 0.001). No association was found between the facility capacity and positive case rate. The outbreak duration increased as the number of positive cases increased ( p = 0.004).

Keywords: COVID-19; nursing homes; outbreak; facility type; incidence rate; positive case rate; elderly (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
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