In: Biology
smallpox can be controlled by
SMALL POX
It is eruptive viral disease which has been completely eradicated through widespread compulsory vaccination ( 10 year Global Eradication Programme by WHO starting 1966 ). The last case was reported in Somalia in 1977. WHO declared the planet free from Small pox in 1980. The disease is caused by brick - shaped DNA virus called Variola Virus. Infection spreads from oral, nasal, vesicular discharges, pustules and scabs. Incubation period is 12 days. The disease begins with headache, bachache, chill, high fever, rashes appearing on third day of illness as reddish spots which changes into papules, vesicles, pustules and finally scabs in third week. The scabs fall down leaving permanent pox marks , specially over face. Complications include blindness. Death could occur. It is controlled by vaccination. First vaccination developed by Edward Jenner ( 1796 ) was against small pox.Disease used to spread through coughing, sneezing, and fomite transmission.