Efforts in a cooperative manner. The smallpox virus likely originated more than 300000 yeas ago and is one of the most devastating diseases ever in the history of humanity. He was barely visible under the most powerful microscope. And was known for very bumps covering face and body. And profuse in internal bleeding. Black vomit. Pieces of destroyed skin shut off ones body. Smallpox is estimated to have killed up to 300 Million People in the 20th century. 300 million. In around 500 million in the last 100 years of its existence. In 1967, the World Health Organization launched an historic and intense effort to eradicate smallpox. At the global eradication effort initially used the strategy of mass to achieve 80 percent Vaccine Coverage in each country and thereafter fusing contact tracing. Familiar with the word. To reduce additional outbreaks. Ultimately the global eradication of smallpox was certified endorsed in 1980. Making it one of the most successful collaborative Public Health in