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Article

Effectiveness of inactivated SARS-CoV-2 vaccines against the Delta variant infection in Guangzhou: a test-negative case-control real-world study.

Emerging microbes & infections - 1 Dec 2021

Li Xiao-Ning, Huang Yong, Wang Wen, Jing Qin-Long, Zhang Chun-Huan, Qin Peng-Zhe, Guan Wei-Jie, Gan Lin, Li Yi-Lan, Liu Wen-Hui, Dong Hang, Miao Yu-Tian, Fan Shu-Jun, Zhang Zhou-Bin, Zhang Ding-Mei, Zhong Nan-Shan

Abstract excerpt

The effectiveness of inactivated SARS-CoV-2 vaccines against the Delta variant, which has been associated with greater transmissibility and virulence, remains unclear. We conducted a test-negative case-control study to explore the vaccine effectiveness (VE) in real-world settings. We recruited participants aged 18-59 years who consisted of SARS-CoV-2 test-positive cases (n = 74) and test-negative controls...

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Identifiers

PMID: 34396940
DOI: 10.1080/22221751.2021.1969291
PMCID: PMC8425710

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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