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Introduction: We investigated the association between history of vaccination for coronavirus disease 2019 (COVID-19) and symptoms at its diagnosis. Methods: We retrospectively analyzed 2566 consecutive individuals suspected of having COVID-19 and visited a designated clinic between January and September 2022 (1733 were diagnosed with COVID-19, and 816 tested negative for COVID-19) in Japan. The individuals were divided by vaccination history for COVID-19. Conclusions: Symptoms at the COVID-19 diagnosis differed with the vaccination history. Information on vaccination history would be worth using when suspecting COVID-19 based on symptoms.
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Shiraiwa et al. (2023) studied this question.
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