HIGHLIGHTS
SUMMARY
COVID-19 remains a global public health concern and is especially pernicious in regions with limited public health infrastructure that suffer from inadequate epidemiologic surveillance and delayed implementation of pandemic countermeasures. The authors assessed full-length SARS-CoV-2 Spike (S)specific IgG and IgA titres in a public university-based cohort, representing a diverse array of people with different risks of exposure to COVID-19. Since February 2020 (and to the date when analysis presented in this work was completed), the Karaganda region (population ~1.3M) had over 63,000 (~5% of regional . . .
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