F1 COVID-19 8 times tested negative, only positive for 9 times, why?
team youtuber10:00:39 29/05/2021
After 8 tests all gave negative results for SARS-CoV-2, on May 27, the disease The patient was sampled by Thai Binh Lung Hospital and tested using GeneXpert technique. The patient's specimen results were positive for SARS-CoV-2. Before that, the Ministry of Health issued a notice to recognize 1 school in Thai Binh province
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