Interessting MedCram video about something everybody could try at home without having to buy anything:

Temperature Effects on Immunity

This matches Dr. John Campbell's observation that in Italy, doctors do everything they can to reduce fever often using Ibuprofen. He thought that may have contributed to the very high death rate. The video points out that ERs are telling Covid patients to go home and come back once they have pneumonia. But they have no suggestions to prevent those patients from getting pneumonia to begin with. So here's what doctors did to prevent Spanish Flu victims from getting pneumonia. He actually has some numbers.