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Protection against re-infection with SARS-CoV-2

01 Apr 2022
Emerging Pandemics

by Eric HY Laua et al. 10 MIN READ

Duration of immunity to virus infections can vary, ranging from lifelong immunity with measles to transient protection to seasonal coronaviruses. Antibody responses to SARS in 2003 remained detectable for around 3 years but T cell responses proved much more durable. Prior infection and vaccination are associated with high levels of protection against re-infection with SARS-CoV-2. Both humoral and T-cell mediated immunity are likely to contribute to protection from infection and disease from COVID-19 as is the case with other respiratory virus infections. Virus neutralizing antibodies correlate with protection from COVID-19 infection and in symptoms.

Findings from this study suggest that neutralizing antibody mediated protection from re-infection against the original strains of SARS-CoV-2 is likely to remain for 700 days or more after symptomatic COVID-19 infection but variants of concern may lead to an erosion, but not abrogation, of this protection.

Open the linked file to read the paper. 

Related File :

4851785226.pdf

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