Persistence of anti-SARS-CoV-2 IgM in convalescent COVID-19 patients

JOURNAL OF INFECTION

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1. Huanggang Municipal Head-quarters for COVID-19 Epidemic Prevention and Control, Key Project of Hunan Provincial Science and Technology Innovation [2020SK1011, 2020SK1010]
2. Program of Hunan Science and Technology Department [2020SK3011]
3. Natural Science Foundation of Hunan Province [2021JJ70049]