- Coronavirus reinfection cases: what we know so far – and the vital missing clues The Conversation UK
- Commentary: COVID-19 may become the new seasonal flu CNA
- Research Suggests Risk Of Getting COVID-19 On Plane Low If Masked CBS New York
- Study Finds COVID-19 Patients Retain Immunity at Least 5 Months After Infection Sputnik International
- How long will immunity to COVID-19 last once a person is infected? Research offers promising news WGN News
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