Update on the omicron sub-variants BA.4 and BA.5.
Rev Med Virol
; : e2391, 2022 Aug 26.
Article
in English
| MEDLINE | ID: covidwho-2245616
ABSTRACT
Several nations have recently begun to relax their public health protocols, particularly regarding the use of face masks when engaging in outdoor activities. This is because there has been a general trend towards fewer cases of coronavirus disease 2019 (COVID-19). However, new Omicron sub-variants (designated BA.4 and BA.5) have recently emerged. These two subvariants are thought to be the cause of an increase in COVID-19 cases in South Africa, the United States, and Europe. They have also begun to spread throughout Asia. They evolved from the Omicron lineage with characteristics that make them even more contagious and which allow them to circumvent immunity from a previous infection or vaccination. This article reviews a number of scientific considerations about these new variants, including their apparently reduced clinical severity.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Prognostic study
Topics:
Vaccines
/
Variants
Language:
English
Journal:
Rev Med Virol
Journal subject:
Virology
Year:
2022
Document Type:
Article
Affiliation country:
Rmv.2391
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