![]() ![]() They are most infectious during the first week of illness because that is when the largest amount of virus is present in saliva. People with smallpox can not spread the disease until they develop a rash, which may begin on the skin or in the mouth. How long is a person with smallpox able to spread the disease? The scabs fall off after three to four weeks.The sores begin to form a crust early in the second week of illness and then develop into scabs. The rash starts as flat, red sores over the next two days, these sores fill with pus. ![]() One to four days after the first symptoms, the infected person develops a rash that is seen mainly on the face, legs and arms. The first symptoms may include high fever (above 101° F), feeling tired, headache and backache. Symptoms begin to appear within seven to 19 days after being exposed to the virus.Smallpox can be spread when an infected person talks, coughs, or sneezes near another person. The United States stopped routine smallpox vaccinations in 1972, since the side effects from the vaccinations were greater than the risk of getting the disease. Before the discovery of a vaccine in 1796, smallpox was common throughout the world. The last case of smallpox in the world was in 1978. Smallpox is a serious disease caused by a virus - the Variola virus. Bureau of Environmental Health Services.All Forms, Applications, Registrations, Reporting.FORMS: Applications, Registration, Reporting, Etc.Applying for a Permit, License, Certification or Registration from DHEC. ![]() ![]()
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