Cold, flu, and sinus infections are common respiratory illnesses that affect millions of people each year. These illnesses are caused by viruses and can spread easily from person to person. Symptoms include coughing, sneezing, congestion, fever, and body aches.
To prevent these illnesses, it is important to practice good hygiene, such as washing your hands frequently, avoiding close contact with people who are sick, and covering your mouth and nose when you cough or sneeze. If you do get sick, rest, drink plenty of fluids, and take over-the-counter medications to relieve symptoms.