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Abstract

We conducted a hospital-based test-negative study in Hong Kong to estimate influenza vaccine effectiveness (VE) for the winter of 2017/18. The interim analysis included data on 1,078 children admitted between 4 December 2017 and 31 January 2018 with febrile acute respiratory illness and tested for influenza. We estimated influenza VE at 66% (95% confidence interval (CI): 43–79) overall, and 65% (95% CI: 40–80) against influenza B, the dominant virus type (predominantly B/Yamagata).

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/content/10.2807/1560-7917.ES.2018.23.8.18-00062
2018-02-22
2025-02-23
/content/10.2807/1560-7917.ES.2018.23.8.18-00062
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Interim estimate of influenza vaccine effectiveness in hospitalised children, Hong Kong, 2017/18
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Susan+S+Chiu&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Chiu Susan S</a>, <a href="/search?value1=Mike+Y+W+Kwan&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kwan Mike Y W</a>, <a href="/search?value1=Shuo+Feng&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Feng Shuo</a>, <a href="/search?value1=Joshua+S+C+Wong&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Wong Joshua S C</a>, <a href="/search?value1=Chi-Wai+Leung&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Leung Chi-Wai</a>, <a href="/search?value1=Eunice+L+Y+Chan&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Chan Eunice L Y</a>, <a href="/search?value1=J+S+Malik+Peiris&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Peiris J S Malik</a>, <a href="/search?value1=Benjamin+J+Cowling&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Cowling Benjamin J</a></span>. Interim estimate of influenza vaccine effectiveness in hospitalised children, Hong Kong, 2017/18. <a href="/content/ecdc">Euro Surveill.</a> 2018;23(8):pii=18-00062. <a href="https://doi.org/10.2807/1560-7917.ES.2018.23.8.18-00062" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2018.23.8.18-00062</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 09 Feb 2018;&nbsp;&nbsp; <span class="generated">Accepted</span>: 20 Feb 2018 </span> </p>
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