Omicron BA.2 Lineage, the "Stealth" Variant: Is It Truly a Silent Epidemic? A Literature Review.

Int J Mol Sci · 2022 · PMC9266794 · PMID 35806320

Europe PMC DOI

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an increasing trendno p-value reported

Additionally, there is an increasing trend in the variant proportions for BA.5 observed in Portugal, accompanied by an increase in COVID-19 case numbers and the test positivity rate.

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