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Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus. [7] [11] 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, [10] making smallpox the only human disease to have been eradicated to date.
One Native tribe majorly affected by the smallpox epidemic was the Mandan tribe. The Mandans traditionally lived along the Missouri River. They had an extraordinarily rich culture, due to them hosting many European and American travelers. The Mandan villages consisted of 12 to 100 lodges and were well organized with a hierarchy of leaders.
However, there is an ongoing debate regarding the continued storage of the smallpox virus by labs in the US and Russia, as any accidental or deliberate release could create a new epidemic in people born since the late 1980s due to the cessation of vaccinations against the smallpox virus. [citation needed]
The disease killed an estimated 400,000 Europeans annually during the 19th century and one-third of all the blindness of that time was caused by smallpox. 20 to 60% of all the people that were infected died and 80% of all the children with the infection also died. It caused also many deaths in the 20th century, over 300–500 million.
[3] [4] [8] He was diagnosed with an infection of the Variola minor strain of smallpox, based on his symptoms and later confirmed by laboratory tests. [3] The date of diagnosis is sometimes stated as 26 October 1977. [11] [12] Maalin did not experience complications, and subsequently recovered fully and was discharged in late November. [3] [4]
Symptoms of pneumonia in the elderly may vary depending on the type of pneumonia and the overall health of the person. While not all of these may be present, the symptoms of pneumonia in seniors ...
Dr. Melamed says that coughing, fever, chills and muscle aches are all common symptoms of pneumonia. "The symptoms of pneumonia can vary widely depending on the patient's age, other conditions ...
Most people became infected during their lifetimes, and about 30% of people infected with smallpox died from the disease, presenting a severe selection pressure on the resistant survivors. [ 29 ] In northern Japan, Ainu population decreased drastically in the 19th century, due in large part to infectious diseases like smallpox brought by ...