Smallpox Virus
Smallpox is a virus that has been eradicated globally, but it has played a prominent role in public health history. The virus is called "variola," and it spreads from person to person through droplets in the air when someone coughs or sneezes. The virus can also spread through contact with objects contaminated with the virus. Smallpox caused severe illness in people, producing high fever, rashes, and scabs. It had a high mortality rate of around 30%, while survivors could have long-term complications, including blindness and scarring. The death rate for smallpox was higher in children and young adults than older adults. An effective vaccine was introduced in the 18th century, but it wasn't until the 20th century that organized vaccination campaigns started to control smallpox. Due to unprecedented global collaboration, the WHO declared smallpox eradicated in 1980. Today, smallpox is only kept in two top-security research laboratories, one in Russia and one in the US, where it is studied to improve global health security by developing effective treatments, diagnostics, and vaccines, and to better understand its biology. In summary, smallpox has been eradicated, but it remains a significant historical example of public health success due to the global efforts in developing an effective vaccine and coordinated campaigns that aimed to control its spread. Smallpox will continue to be studied for scientific purposes to strengthen global preparedness in the fields of public health and biodefense.
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