Smallpox - Description



The smallpox virus infected humans only. It did not infect other animals or insects. Neither could animals or insects transmit the virus from one human to another. The disease could be transmitted only by contact between humans. Sometimes a person came into contact with someone with skin lesions caused by the disease. Skin lesions are wounds produced by the virus. They were known as pox. A person also could catch the virus even if the infected person had no lesions.

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