Journal of Virology and Vaccine Development

Journal of Virology and Vaccine Development

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Cases of 193 Inpatients and Caregivers with COVID-19 Negative Conversion Positive— A Single-Center Analysis

Chuang Yang*, Luobu Ouzhu, Caihong Hao, Enya Ning

FoKind Hospital, Tibet University, Tibet, P. R. China

Abstract

Background: A sudden outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in the Tibetan Autonomous Region in August 2022 disrupted the coronavirus disease 2019 (COVID-19)-free status of the Tibetan over the past 3 years and poses severe risks to public health.

Methods: A total of 2966 patients and caregivers were admitted to our hospital from August 01, 2022 to October 10, 2022 and cases of negative-to-positive conversion were analyzed during hospitalization.

Results: In total, 193 cases of negative-to-positive conversion were identified. The rates of hospitalization for adults (age, ≥15 years), children (age, 0–14 years), and caregivers were 4.04%, 3.07%, and 5.94%, respectively. For the majority of COVID-19 cases, negative-to-positive conversion occurred within 1–4 days. The rates of cases with mild, moderate, and severe symptoms were 41.45%, 46.63%, and 11.92%, respectively. The Tibetan population accounted for 86.01% of all positive cases.

Conclusion: Mutant variants of SARS-CoV-2 can adapt to harsh conditions at high altitudes and spread among local populations, suggesting that infection prevention and control efforts should be continued in some regions to protect public health.

Keywords:
Coronavirus disease 2019, Severe acute respiratory syndrome coronavirus 2, Tibet, Inpatients, Caregivers
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