WebJun 28, 2016 · Smallpox is an ancient disease caused by the variola virus. Early symptoms include high fever and fatigue. The virus then produces a characteristic rash, particularly … WebSmallpox is a disease that is caused by the variola virus. It is an infectious (also known as ‘communicable’) disease meaning it can spread from one person or animal to another, either directly or indirectly. The variola virus, however, infects only humans (meaning animals are unable to catch smallpox).
Smallpox Definition, History, Vaccine, & Facts Britannica
WebApr 10, 2024 · Virus is similar to Ebola. The Marburg virus isn’t new — it was first discovered in 1967, when outbreaks happened in labs in Marburg and Frankfurt (both in Germany) and in Serbia (formerly ... WebSmallpox is an acute contagious disease caused by the variola virus. It gets its name from the Latin word for "spotted," referring to the raised, pustular bumps that break out over the … bing chat free
Smallpox - Diagnosis and treatment - Mayo Clinic
Smallpox was an infectious disease caused by variola virus (often called smallpox virus) which belongs to the genus Orthopoxvirus. The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, making smallpox the only human disease to be eradicated. The initial symptoms of the disease included fever and vomiting. This was followed by formation … Web1980. The World Health Organization (WHO) declares smallpox eliminated worldwide due to vaccinations. Smallpox vaccination ends. Before the smallpox vaccine, smallpox had been considered one of the deadliest infectious diseases. About 300 million people died of smallpox in the 20th century. WebFeb 26, 2014 · Smallpox is caused by 1 of 2 closely related strains: variola major and variola minor. The 2 viruses are indistinguishable except by polymerase chain reaction (PCR) testing. Variola minor infection (known … bing chat for firefox