In Denmark, Omicron reinfections reveal ineffective post-COVID-19 immunity

9/20/2022 7:23:00 AM

In a recent study posted to the medRxiv* preprint server, researchers investigated variant-wise SARS-CoV-2 reinfection cases in Denmark.

In Denmark, Omicron reinfections reveal ineffective post-COVID-19 immunity Denmark immunity Omicron Coronavirus Disease COVID HerdImmunity medrxivpreprint cwru TAMU StanfordMed ColumbiaMed

In a recent study posted to the medRxiv* preprint server, researchers investigated variant-wise SARS-CoV-2 reinfection cases in Denmark.

The evolution of SARS-CoV-2 has led to the emergence of multiple variants of concern (VOC) with increased transmissibility and immune-evasiveness such as Omicron, leading to an upsurge of SARS-CoV-2 reinfections and difficulties in COVID-19 mitigation globally. Studies have investigated SARS-CoV-2 reinfection frequencies but were restricted to reverse transcriptase polymer chain reaction (RT-PCR) analysis data, in which SARS-CoV-2 Pango lineages are not specified. In addition, a genomic sequencing report is typically categorized as either initial infection or reinfection, but next-generation sequencing (NGS) data for an initial infection and reinfection are rarely reported together for an individual.

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