Had COVID-19 spread in the community before the first confirmed case in Nagasaki, Japan?

This retrospective study evaluated stored nasopharyngeal swab samples from Japanese patients with influenza-like illness during the 2019/2020 season. We aimed to determine whether COVID-19 had spread in the community before the first confirmed case. The period of influenza season during 2019/2020 in...

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Veröffentlicht in:	Microbes and infection 2021-05, Vol.23 (4-5), p.104812-104812, Article 104812
Hauptverfasser:	Kaku, Norihito, Ota, Kenji, Sasaki, Daisuke, Akamatsu, Norihiko, Uno, Naoki, Sakamoto, Kei, Kosai, Kosuke, Hasegawa, Hiroo, Izumikawa, Koichi, Mukae, Hiroshi, Yanagihara, Katsunori
Format:	Artikel
Sprache:	eng
Schlagworte:	COVID-19 COVID-19 Short Communication Influenza RT-PCR SARS-CoV-2
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	This retrospective study evaluated stored nasopharyngeal swab samples from Japanese patients with influenza-like illness during the 2019/2020 season. We aimed to determine whether COVID-19 had spread in the community before the first confirmed case. The period of influenza season during 2019/2020 in Nagasaki was shorter than in previous influenza seasons. When the first COVID-19 case was reported in Nagasaki prefecture, the number of influenza cases were very low. No positive results for SARS-CoV-2 were detected in 182 samples that were obtained from adult outpatients. Our results revealed no large-scale spread of COVID-19 in the community before the first confirmed case.
ISSN:	1286-4579 1769-714X
DOI:	10.1016/j.micinf.2021.104812