Volume 27, Number 6—June 2021
Dispatch
Trends in Viral Respiratory Infections During COVID-19 Pandemic, South Korea
Sujin Yum, Kwan Hong, Sangho Sohn, Jeehyun Kim, and Byung Chul Chun
Table
Mean weekly positivity rates of respiratory viruses during weeks 5–52, South Korea, 2010–2019 compared with 2020
| Virus | Mean positivity (±SD), % |
Difference, % (95% CI) | |
|---|---|---|---|
| 2010–2019 | 2020 | ||
| All studied viruses | 54.7 (±8.3) | 39.1 (±15.3) | −15.6 (−21.0 to −10.2) |
| Adenovirus | 7.4 (±2.1) | 6.5 (±3.2) | −0.9 (−2.1 to 0.3) |
| Human bocavirus | 2.3 (±2.3) | 4.1 (±4.5) | 1.8 (0.2 to 3.5) |
| Human coronavirus | 3.4 (±2.4) | 1.2 (±2.8) | −2.2 (−3.1 to −1.3) |
| Human metapneumovirus* | 3.1 (±3.4) | 0.6 (±1.4) | −2.5 (−3.5 to −1.4) |
| Human rhinovirus | 17.4 (±4.9) | 23.9 (±15.0) | 6.6 (2.7 to 10.4) |
| Influenza virus | 11.0 (±13.4) | 1.7 (±6.7) | −9.3 (−12.7 to −5.8) |
| Human parainfluenza virus | 6.2 (±4.7) | 0.1 (±0.3) | −6.1 (−7.5 to −4.7) |
| Respiratory syncytial virus | 3.8 (±4.4) | 0.9 (±1.9) | −2.9 (−4.4 to −1.4) |
*Surveillance began in 2012.
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