Update on the omicron sub‐variants BA.4 and BA.5. (26th August 2022)

• Record Type: Journal Article
• Authors: Tallei, Trina Ekawati; Alhumaid, Saad; AlMusa, Zainab; Fatimawali, ; Kusumawaty, Diah; Alynbiawi, Ahlam; Alshukairi, Abeer N.; Rabaan, Ali A.
• Is Part Of: Reviews in medical virology. Volume 33:Number 1(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-26
• Subjects: BA.4 and BA.5 -- COVID‐19 -- evolution -- omicron sub‐variants -- SARS‐CoV‐2; Medical virology -- Periodicals; Review Literature -- Periodicals; Virus Diseases -- Periodicals; Viruses -- Periodicals; 616.0194
• DOI: 10.1002/rmv.2391
• Languages: English
• ISSNs: 1052-9276

Abstract

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.