“Current spread and intensity of flue especially its variant H3N2 are very concerning. Covid-19, on the other hand, is caused by the SARS-CoV-2 virus and is considered highly infectious. The majority of the common colds are caused by rhinoviruses, respiratory syncytial viruses, influenza type A and type B viruses, etc,” Dr Anantha Padmanabha, consultant, internal medicine, Fortis Hospital, Nagarbhavi told in an earlier interaction. In each virus type, there can be subtypes and variants. “There are more than 200-300 viruses that may cause the common cold. On the other hand, flu, or the common cold, is quite frequent during seasonal changes and is, often, harmless. Notably, H1N1, previously called swine flu, is a virus similar to the influenza viruses that cause illness in pigs.
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