I would actually to stock up on Vitamin D and ideally get your levels tested.
These outbreaks (flu, SARS, corona virus) all seem to occur in winter where most area don't get the proper wavelength of UV needed to make Vitamin D due to sun angle.
Actually, it has more to do with temperature. Viruses have a protective shell that allows them to exist outside of the body. Eventually it turns to liquid and the virus breaks down. In warmer temperatures, that happens faster. This is the main reason why the flu and cold season is the cooler months.