It is possible to spread the flu to others even when you are almost over it, but the contagiousness has decreased significantly and the risk of spreading it to others is much lower than in the acute stage. Colds are upper respiratory tract infections caused by various viruses and are mostly spread by airborne droplets, but can also be spread by contaminated hands or everyday utensils. The flu can present with symptoms such as fever, stuffy nose, runny nose, sore throat, cough, muscle aches, etc. The patient is the main source of infection and is usually most contagious in 2-3 days. If the flu is caused by the influenza virus, the contagious period can reach about a week, and in some children the individual contagious period can reach more than 10 days. So although the patient’s symptoms have disappeared and his condition has gradually improved, it is possible that he may also have a certain degree of contagiousness, so it is important to keep a distance when in contact with people with the flu, keep the windows open and ventilate the room, and pay attention to diligent hand washing and disinfection.