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Epidemic curve of COVID‐19 in Malaysia in 2020 from the first reported case on 25 January to 30 June. The periods of serum sampling are shown (main wave, 29 January to 14 April 14; postwave, 15 April to 6 June) with crude seroprevalence rates (95% CI). CI, confidence interval; COVID‐19, coronavirus disease 2019
