COVID-19 cluster outbreaks and infection control measures in nursing homes in Okinawa: protocol for a retrospective observational study | ClinicLens

Introduction Following the reclassification of COVID-19 as a category V infectious disease in Japan in May 2023, systematic public health monitoring of case numbers and cluster outbreaks was discontinued. Consequently, infection control measures, responses to cluster outbreaks an

Medical Literature · Updated 2026-08-02

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