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Emergence of Omicron BA.1 and BA.2 variants and concern over vaccine breakthrough infection

Mahnoor Sukaina1, Mohammad Mehedi Hasan2, Mohammad Yasir Essar3,4

  • 1Karachi Medical and Dental College, Karachi, Pakistan.

Annals of Medicine and Surgery (2012)
|June 13, 2022
PubMed

Keywords:
BA.1 variantBA.2 variantCOVID-19Fourth recommended COVID-19 vaccineRecommendation third booster doseSARS-CoV-2Vaccine breakthrough infection

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