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Volume 26, Number 11—November 2020
Research Letter

Abrupt Subsidence of Seasonal Influenza after COVID-19 Outbreak, Hong Kong, China

Ngai-Sze Wong, Chi-Chiu Leung, and Shui-Shan LeeComments to Author 
Author affiliations: The Chinese University of Hong Kong, Hong Kong, China (N.-S. Wong, S.-S. Lee); Hong Kong Tuberculosis, Chest and Heart Diseases Association, Hong Kong (C.-C. Leung)

Main Article

Table

Characteristics of winter influenza seasons, Hong Kong, China, 2013–14 through 2019–20*

Seasonal year Onset week Duration, weeks Peak level, % Postseason trough, % Peak to trough, wk Weekly no. tests, median (IQR)
2013–14 49 22 31.4 4.3 13 2,423 (2,191–2,588)
2014–15 49 21 38.6 6.1 15 3,640 (3,029–4,230)
2015–16 51 25 25.7 2.5 17 4,017 (3,292–4,537)
2016–17 52 14 9.2 5.5 6 4.104 (3,890–4,216)
2017–18 47 30 26.5 0.8 20 4,426 (4,100–6,335)
2018–19 47 23 29.9 4.4 14 6,073 (5,439–6,475)
2019–20 48 13 18.8 0.4 6 5,711 (5,327–6,318)

*IQR, interquartile range.

Main Article

Page created: August 11, 2020
Page updated: October 19, 2020 12:04 PM EDT
Page reviewed: October 19, 2020 12:04 PM EDT
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