1. Infection with variola minor conferred immunity against the more dangerous variola major. 2. The last naturally occurring case of " Variola major " was diagnosed in October 1975 in Bangladesh. 3. Infection with " v . minor " induces immunity against the more deadly " variola major " form. 4. Variola major virus ( Smallpox virus) 5. According to Ramenofsky, " " Variola Major " can be transmitted through contaminated articles such as clothing or blankets. 6. Smallpox ( " Variola major " and " Variola minor " ) began to spread in Mesoamerica immediately after the arrival of Europeans. 7. Like variola major, alastrim was spread through inhalation of the virus in the air, which could occur through face-to-face contact or through fomites. 8. One of the two main forms of the disease, variola major, has a fatality rate of 30 percent, according to the World Health Organization. 9. Archaeologist and anthropologist Ann F . Ramenofsky writes, " " Variola Major " can be transmitted through contaminated articles such as clothing or blankets. 10. Smallpox is an infectious disease unique to humans, caused by either of two virus variants named " Variola major " and " Variola minor ".