This similar virus is cowpox. The cow to the left has been intentionally infected with cowpox virus. The fluid that you collect from virus-caused pustules on the cow's udder contains many copies ...

The same techniques were then used to genetically alter the cowpox virus, which infects a range of animals including humans, by scientists at the University of St Louis. Their research brings ...

Data on the number of cases for these diseases from the pre-vaccine era is hard to come by, and even the case counts are ...

Over 200 years after the first successful vaccine was created by an English physician, who discovered that inoculation with the cowpox virus protected against smallpox, vaccines remain one of the ...

The virus was so prevalent and lethal that in some ... In 1796 he made the crucial observation that farmhands and dairy maids who contracted cowpox from cows never came down with the similar ...

On May 8, 1980, forty-five years ago, the World Health Organization, a part of the United Nations, announced that officials had eradicated smallpox from the world’s population. The last case ...