Yahoo Web Search

Search results

  1. Aug 28, 2016 · Probably Around 1,000 B.C. The virus almost certainly originated in Africa, passing back and forth between the Aedes aegypti mosquito and monkeys.

  2. The outbreak of yellow fever in Barcelona in 1821. The evolutionary origins of yellow fever most likely came from Africa. Phylogenetic analyses indicate that the virus originated from East or Central Africa, with transmission between primates and humans, and spread from there to West Africa.

  3. Aug 25, 2018 · Epidemiology of yellow fever in Africa. YF has been known in Africa since the end of the fifteenth century through sporadic cases and/or limited small epidemics observed in the colonial counters of the West African coast. In East and South Africa, YF was probably rare or absent from coastal areas because of the lack of an appropriate vector.

    • Jean-Philippe Chippaux, Jean-Philippe Chippaux, Alain Chippaux
    • 10.1186/s40409-018-0162-y
    • 2018
    • 2018
  4. The virus is endemic in tropical areas of Africa and Central and South America. 27 countries are at highest risk for yellow fever epidemics in Africa. The burden of yellow fever in Africa is estimated at 84,000–170,000 severe cases and 29,000–60,000 deaths annually.

  5. Feb 27, 2022 · Epidemiological and genetic studies sustain the hypothesis that the YF virus originated in Africa [ 7] and would be introduced in the 16th century by the trading of slaves from endemic African countries into countries of the Western region of America, causing outbreaks there between the 17th and 18th centuries [ 8 ].

    • 10.3390/vaccines10030372
    • 2022/03
    • Vaccines (Basel). 2022 Mar; 10(3): 372.
  6. Yellow fever has been around since at least the 18th century and was known and dreaded throughout the 19th century, especially in port towns with the arrival of new ships. It was endemic in Cuba, and so after the Spanish-American War, a Yellow Fever Commission was established in the United States to investigate the disease.

  7. Dec 23, 2021 · Русский. Español. Situation at a glance. Yellow fever is endemic in the WHO African Region and was among the top five most frequently reported events in the region in 2019 and 2020. Twenty-seven countries in Africa have been classified as high-risk by the Eliminate Yellow fever Epidemics (EYE) global strategy.

  1. People also search for