flu can range from a nuisance to a serious health threat. According to the Centers for Disease Control and Prevention (CDC), “common colds are the main reason that children miss school and adults miss work.”Although most cases of the common cold and flu tend to go away by themselves, every year, flu kills an estimated 290,000 to 650,000 people worldwide.What do scientists know about how plummeting temperatures allow these viruses to spread, and what is the best way of preventing colds and flu?
We investigate.First, we need to distinguish between the common cold and flu, because the viruses that cause these do not necessarily behave in the same way.Most of the time, the common cold manifests with a trilogy of symptoms: a sore throat, a.