The<unk>  was the first vaccine to be developed against a contagious disease. In 1796, the British doctor Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly<unk>  virus. Cowpox served as a natural vaccine until the modern<unk>  emerged in the 20th century. From 1958 to 1977, the World Health Organization conducted a global vaccination campaign that eradicated<unk> , making it the only human disease to be eradicated. Although routine<unk> tion is no longer performed on the general public, the vaccine is still being produced to guard against bioterrorism, biological warfare, and for monkeypox. The term vaccine derives from the Latin word for cow, reflecting the origins of<unk> tion. Edward Jenner referred to cowpox as variolae vaccinae<unk>  of the cow). The origins of the<unk>  became murky over time, especially after Louis Pasteur developed laboratory techniques for creating vaccines in the 19th century. Allan Watt Downie demonstrated in 1939 that the modern<unk>  was serologically distinct from cowpox, and vaccinia was subsequently recognized as a separate viral species. Whole-genome sequencing has revealed that vaccinia is most closely related to horsepox, and the cowpox strains found in Great Britain are the least closely related to vaccinia.
Smallpox vaccine
Polio vaccine
Mumps vaccine
Hantavirus vaccine
Typhus vaccine
Measles vaccine
Ebola vaccine
Rabies vaccine