Article ; Online: Prevention of host-to-host transmission by SARS-CoV-2 vaccines.
The Lancet. Infectious diseases
2021 Volume 22, Issue 2, Page(s) e52–e58
Abstract: As the number of individuals vaccinated against SARS-CoV-2 rises worldwide, population-level data regarding the vaccines' ability to reduce infection are being generated. Randomised trials have shown that these vaccines dramatically reduce symptomatic ... ...
Abstract | As the number of individuals vaccinated against SARS-CoV-2 rises worldwide, population-level data regarding the vaccines' ability to reduce infection are being generated. Randomised trials have shown that these vaccines dramatically reduce symptomatic COVID-19; however, less is known about their effects on transmission between individuals. The natural course of infection with SARS-CoV-2 involves infection of the respiratory epithelia and replication within the mucosa to sufficient viral titres for transmission via aerosol particles and droplets. Here we discuss the available data on the existing, approved SARS-CoV-2 vaccines' capacity to reduce transmissibility by reducing primary infection, viral replication, capacity for transmission, and symptomaticity. The potential for mucosal-targeted SARS-CoV-2 vaccine strategies to more effectively limit transmission than intramuscular vaccines is considered with regard to known immunological mechanisms. Finally, we enumerate the population-level effects of approved vaccines on transmission through observational studies following clinical trials and vaccine distribution in real-world settings. |
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MeSH term(s) | Antibodies, Viral/biosynthesis ; Antibodies, Viral/immunology ; COVID-19/prevention & control ; COVID-19/transmission ; COVID-19 Vaccines/adverse effects ; COVID-19 Vaccines/immunology ; Humans ; Immunoglobulin A/biosynthesis ; Immunoglobulin A/immunology ; Immunoglobulin G/biosynthesis ; Immunoglobulin G/immunology ; Virus Replication/immunology |
Chemical Substances | Antibodies, Viral ; COVID-19 Vaccines ; Immunoglobulin A ; Immunoglobulin G |
Language | English |
Publishing date | 2021-09-14 |
Publishing country | United States |
Document type | Journal Article ; Review |
ZDB-ID | 2061641-7 |
ISSN | 1474-4457 ; 1473-3099 |
ISSN (online) | 1474-4457 |
ISSN | 1473-3099 |
DOI | 10.1016/S1473-3099(21)00472-2 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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