Results from a systematic programme of evaluating COVID-19 reinfection cases in the early phase of the pandemic, Singapore by Glorijoy Shi En Tan, Christine Qiuhan Gao, Jievanda Shu Ying Ow, Thuan Thong Tan, Say Tat Ooi, Cui Lin, Raymond Tzer Pin Lin, Vernon Jian Ming Lee, Monica Chan, Yee Sin Leo, Shawn Vasoo

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