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[Evidence summary:] Do COVID-19 vaccines prevent SARS- CoV-2 transmission and infection among healthcare workers with specific consideration of the B.1.617.2 (Delta) variant? [v1.0]

dc.contributor.authorNational Health Library & Knowledge Service (NHLKS)
dc.contributor.authorLeen, Brendan
dc.contributor.authorDelaunois, Isabelle
dc.contributor.authorQuinn, Emma
dc.contributor.authorMcCarthy, Siobhan
dc.contributor.authorWhite, Philippa
dc.contributor.authorO'Reilly, Peter
dc.contributor.authorBrennan, Margaret
dc.contributor.authorHennigan, Oisin
dc.date.accessioned2022-04-21T14:21:16Z
dc.date.available2022-04-21T14:21:16Z
dc.date.issued2022-01-24
dc.identifier.urihttp://hdl.handle.net/10147/631770
dc.descriptionMain Points 1. Data from several reports support the efficacy of vaccination in reducing SARS- CoV-2 infections in healthcare personnel (HCP); however, cases of SARS-CoV-2 infection have been reported in fully vaccinated HCP, and data suggest there may be a somewhat higher rate of breakthrough infections with the Delta variant. 2. Vaccination reduces transmission of Delta, but by less than the Alpha variant. The Delta variant may attenuate vaccine- associated reductions in transmission; and transmission reductions may decline over time. It is unclear if the reduction in vaccine effectiveness is due to the Delta variant or waning immunity with increasing time since initial vaccination series. 3. Fully vaccinated individuals with breakthrough infections have peak viral load similar to unvaccinated cases and can efficiently transmit infection. 4. As vaccine uptake has progressed and vaccine supplies have increased, several countries have progressively expanded the rollout and have started recommending additional vaccine doses in certain priority groups including HCP.en_US
dc.language.isoenen_US
dc.publisherHealth Service Executiveen_US
dc.relation.ispartofseriesQ. 122en_US
dc.relation.urlhttps://scanner.topsec.com/?d=2120&u=https%3A%2F%2Fhselibrary.ie%2Fdo-covid-19-vaccines-prevent-sars-cov-2-transmission-and-infection-among-healthcare-workers-with-specific-consideration-of-the-b-1-617-2-delta-variant%2F&t=b733d7247c25ba1facf6fec6ee64ee606aceccd9&r=showen_US
dc.subjectCORONAVIRUSen_US
dc.subjectCOVID-19en_US
dc.subjectHEALTHCARE WORKERSen_US
dc.subjectINFECTION PREVENTION AND CONTROLen_US
dc.title[Evidence summary:] Do COVID-19 vaccines prevent SARS- CoV-2 transmission and infection among healthcare workers with specific consideration of the B.1.617.2 (Delta) variant? [v1.0]en_US
dc.typeOtheren_US
refterms.dateFOA2022-04-21T14:21:17Z


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