What is the spread of measles in children?

Measles patients are the only source of infection. In the early stages of infection, the virus grows and reproduces in large quantities in the patient's respiratory tract, containing virus secretions. After the patient's breath, cough or sneeze discharged from the body and suspended in the air, through the respiratory tract transmission, close contact with the patient and direct contact with the patient's nasopharyngeal secretions can also be transmitted, after the disease can obtain lifelong immunity, measles patients before and after the visit of five days are infectious, if there are complications, infectious can be extended to ten days after the rash, the onset season is mainly winter and spring.