Answer
Smallpox is the world's most devastating disease known to humanity that is caused by variola virus. It is transmitted from human to human through closed contact and saliva droplets. It was eliminated globally by mass vaccination campaigns to achieve 80% vaccine coverage in each country and followed by ring vaccination. The campaign was led by the World Health Organization. Along with the vaccination campaign, the bifurcated needle was developed and was used as the primary instrument during the vaccination.
Work Step by Step
Smallpox is the world's most devastating disease known to humanity that is caused by variola virus. It is transmitted from human to human through closed contact and saliva droplets. It was eliminated globally by mass vaccination campaigns to achieve 80% vaccine coverage in each country and followed by ring vaccination. The campaign was led by the World Health Organization. Along with the vaccination campaign, the bifurcated needle was developed and was used as the primary instrument during the vaccination.
