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Comment
. 2022 Apr;22(4):446-447.
doi: 10.1016/S1473-3099(22)00132-3.

Effectiveness of ChAdOx1 nCoV-19 vaccine during the delta (B.1.617.2) variant surge in India

Sasanka Chakrabarti  1 , Sankha Shubhra Chakrabarti  2 , Gourav Chandan  3 , Upinder Kaur  4 , Bimal Kumar Agrawal  5
Affiliations
Comment

Effectiveness of ChAdOx1 nCoV-19 vaccine during the delta (B.1.617.2) variant surge in India

Sasanka Chakrabarti et al. Lancet Infect Dis. 2022 Apr.
No abstract available

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Conflict of interest statement

We declare no competing interests.

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References

    1. Thiruvengadam R, Awasthi A, Medigeshi G, et al. Effectiveness of ChAdOx1 nCoV-19 vaccine against SARS-CoV-2 infection during the delta (B.1.617.2) variant surge in India: a test-negative, case-control study and a mechanistic study of post-vaccination immune responses. Lancet Infect Dis. 2022 doi: 10.1016/S1473-3099(21)00680-0. published online Nov 25. - DOI - PMC - PubMed
    1. Chakrabarti SS, Kaur U, Singh A, et al. Of cross-immunity, herd immunity and country-specific plans: experiences from COVID-19 in India. Aging Dis. 2020;11:1339–1344. - PMC - PubMed
    1. Sette A, Crotty S. Pre-existing immunity to SARS-CoV-2: the knowns and unknowns. Nat Rev Immunol. 2020;20:457–458. - PMC - PubMed
    1. Chua H, Feng S, Lewnard JA, et al. The use of test-negative controls to monitor vaccine effectiveness: a systematic review of methodology. Epidemiology. 2020;31:43–64. - PMC - PubMed

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