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Characteristics of within-household varicella transmission events associated with school outbreaks in Shanghai, China, 2009–2018

  • Yuan-Fang Chen (a1), Qi Zhou (a1), Jing-Yi Liu (a1), Rui-Jie Gong (a1), Shu-Qian Mao (a1), Zhuo-Jun Ye (a2) and Qiang-Song Wu (a1)...

Abstract

Transmission of varicella occurs frequently in schools and households. We investigated the characteristics of varicella cases derived from within-household transmission and the modes of varicella transmission between school and household settings in Shanghai, China, from 2009 to 2018. Within-household transmission occurred in 278 households, of which 134 transmission events were between children. Sixty-one household varicella transmission events may be attributed to isolation procedures for infected students during school outbreaks, and 7.6% of school outbreaks were caused by schoolchildren cases derived from within-household transmission. The frequency of ‘school-household-school’ transmission adds an additional layer of complexity to the control of school varicella outbreaks. Administration of varicella vaccine as post-exposure prophylaxis after exposure is considered to be an effective measure to control varicella spread within households and schools.

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Copyright

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

Corresponding author

Author for correspondence: Qiang-Song Wu, E-mail: wuqs96@163.com

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Yuan-Fang Chen and Qi Zhou contributed equally to this study.

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References

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Characteristics of within-household varicella transmission events associated with school outbreaks in Shanghai, China, 2009–2018

  • Yuan-Fang Chen (a1), Qi Zhou (a1), Jing-Yi Liu (a1), Rui-Jie Gong (a1), Shu-Qian Mao (a1), Zhuo-Jun Ye (a2) and Qiang-Song Wu (a1)...

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