An Overview of Measles Transmission
Measles (rubeola) is a highly contagious illness that is spread by coughing and sneezing. An infected person can transmit measles any time from about 4 days prior to the onset of the rash to 4 days after the onset. If one person has it, 90 percent of his or her susceptible close contacts will also become infected with the
measles virus.
How Does Measles Transmission Occur?
The measles virus resides in the mucus in the nose and throat of the infected person. When that person sneezes or coughs, droplets spray into the air. The infected mucus can land in other people's noses or throats through breathing or putting their fingers in their mouth or nose after touching an infected surface. The virus remains active and contagious on infected surfaces for up to 2 hours. Measles transmission occurs so easily that anyone who is not immunized will probably get it eventually.
Measles Transmission and Measles Symptoms
Following measles transmission, a person does not become sick immediately. Once the measles virus enters the body, it travels to the back of the throat and lungs, where it begins to multiply. It can also travel to other parts of the body. After 8-12 days, symptoms of measles can begin. This period between measles transmission and the beginning of
measles symptoms is called the
measles incubation period.
