Incubation Period :
An infected person has no symptoms at this point, and is not contagious. Last 7-17 day
Development Stage :
This period is characterized by flulike symptoms (high fever, head/body aches and vomiting). The infected person may be contagious at this stage. Lasts 2-4 days
Early Rash Phase:
This is the disease’s most contagious period.The infected person first gets a rash of red spots in the mouth and on the tongue.
These spots become sores, which break open and spread the virus into the mouth and throat; at this point, the person is extremely contagious.
At the same time, a rash appears on the skin of the face, arms, legs, hands and feet within 24 hours; also, the fever will begin to fall. Soon, the rash on the body turns into raised, fluid-filled bumps. The fever rises again, and stays high until the sores scab over. Lasts 4 days
Pustular Rash Phase:
The raised bumps on the body become pustules raised, round bumps that feel hard to the touch. The infected person is still contagious. This period Lasts 5 days
Pustules and Scabs Phase:
The raised pustules develop a crust, and then becomes a scab Lasts 5 days
Resolving Scabs Phase :
Scabs fall off the skin, leaving pitted scars.
Last 6 days
Final Phase :
Scabs have fallen off and the infected person is no longer contagious.