This Week's Tip Sore throats are common with a cold and the flu. If a sore throat is part of these illnesses, it is most likely caused by a virus and a throat swab is not needed. Previous Tips Viruses are more contagious than bacteria. Handwashing is the best way to stop the spread of colds. Always wash your hands after being with someone who has a cold or the flu.
Most sore throats are due to viruses.
A throat swab is the only way to know if antibiotics might help. Most coughs are due to viruses. Sometimes a cough can be due to pneumonia. If your doctor suspects pneumonia, an X-ray should be taken and antibiotics are usually prescribed. Eighty percent of common infections are spread by hands.