Smallpox is a viral infection. It is contagious and can be
deadly. The disease was eliminated worldwide. This was done
through global immunization programs. The last known natural
occurring human case was in 1977. Governments have studied its
use as a germ-warfare weapon. As a weapon, it would be released
in the air. Those exposed could develop the disease. They would
then pass it to other people. Variola major is the virus that
causes the infection. It is spread: - Through the airborne
droplets of infected saliva - Between people who have direct
contact - Through the handling of contaminated bed linens or
clothing Two rare, more serious types of the disease are: They
are transmitted the same way. The main risk factor for
contracting smallpox is exposure to the virus after its release
during a biological terrorism attack. Symptoms usually occur
about 12 days after exposure. Hemorrhagic or malignant symptoms
usually do not appear until death is near. Early symptoms
include: - High fever - Severe headache - Pos