What Are Measles?
3. Infection And Incubation
After somebody has been infected, the disease will progress in a number of stages over around 2 to 3 weeks. The first of these is the incubation stage which lasts for around 10-14 days. During this stage, the virus will be replicating, but it has not yet multiplied enough that it will cause symptoms for the patient.
During the beginning of this stage the patient will not be contagious. Around 4 days or so before symptoms do show, however, the patient will become contagious. This means the virus is more likely to spread faster as the patient can be spreading the disease without being aware that they even have it.
