Flu is a viral infection that spreads very easily from person to person. It is most common in the winter, and tends to peak in January, February, and March. The majority of cases of flu are related to those over 65 years of age.
Flu is a viral infection that spreads very easily from person to person. It is most common in the winter, and tends to peak in January, February, and March. The majority of cases of flu are related to those over 65 years of age.