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Volume 28, Number 5—May 2022

Determining Existing Human Population Immunity as Part of Assessing Influenza Pandemic Risk

Jonathan Tin Lai Cheung, Tim K. Tsang, Hui-ling Yen, Ranawaka A.P.M. Perera, Chris Ka Pun Mok, Yong Ping Lin, Benjamin J. Cowling, and Malik PeirisComments to Author 
Author affiliations: University of Hong Kong, Hong Kong (J.T.L. Cheung, T.K. Tsang, H. Yen, R.A.P.M. Perera, C.K.P. Mok, B.J. Cowling, M. Peiris); Chinese University of Hong Kong, Hong Kong (C.K.P. Mok); First Affiliated Hospital of Guangzhou Medical University, Guangdong, China (Y.P. Lin)

Main Article

Table 1

Seroprevalence and geometric mean titer for swine influenza viruses of H1 and H3 subtype in serum specimens from 353 persons in Hong Kong and Guangzhou, China*

Virus Virus abbreviation Virus lineage No. (%) persons
Seroprevalence ≥40 Seroprevalence ≥10
A/swine/HK/NS4003/2016 (H1N1) NS4003 EA 34 (9.6) 105 (29.7) 7.67
A/swine/GD/104/2013 (H1N1) GD104 EA 39 (11.0) 89 (25.2) 7.84
A/swine/HK/NS301/2013 (H1N2) NS301 TRIG 27 (7.6) 115 (32.6) 7.76
A/swine/HK/1436/2016 (H1N1) TS1436 Pandemic (pdm09) 146 (41.4) 222 (62.9) 20.96
A/swine/HK/4348/2016 (H3N2) TS4348 Seasonal (BD-like H3) 239 (67.7) 308 (87.3) 48.77

*Serum samples were collected during 2013–2014 in Hong Kong and during 2015 in Guangzhou. BD, Binh Duong; EA, Eurasian avian-like; GMT, geometric mean titer; TRIG, triple-reassortant internal gene.

Main Article

Page created: February 24, 2022
Page updated: April 19, 2022
Page reviewed: April 19, 2022
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