IFNA2 and infection: A recent study has shown that spraying of IFNα2b can be used as a prophylactic agent.123 In another study conducted among 2000 susceptible healthcare workers in Hubei, it was observed that recombinant IFN-α (rhIFN-α) nasal drops administered with or without thymosin α1 to low and high risk individuals respectively over a period of 28 days protected all of them from catching COVID-19 pneumonia.129 Hence the two studies prove that IFN-1 can be used in healthy and susceptible individuals as a means to prevent SARS-CoV-2 associated infection.