As above but without rash. Observation and exclusion of those with fever or sore throat. Milk and food may be contaminated. Both the flu and colds are caused by viruses. Viruses are tiny living things-so tiny that thousands can fit on the tip of a pin.
Viruses attach themselves to cells and reproduce.
When virus-infected cells spread, they can cause various illnesses. Scientists have counted more than 200 different kinds of cold viruses. C. Types A and B are the most common. The fact that there are so many kinds of cold viruses helps explain why colds are much more common than the flu. You re 10 times more likely to catch a cold than the flu.