2023年5月31日 · Yellow fever is an infectious disease transmitted by mosquitoes that bite mostly during the day. As of 2023, 34 countries in Africa and 13 countries in Central and South America are either endemic for, or have regions that are endemic for, yellow fever. Yellow fever is prevented by a vaccine, which is safe and affordable.

2023年11月8日 · Yellow fever is a high-impact, high-threat disease, with a risk of international spread, representing a potential threat to global health security. There are 3 types of transmission cycles: Sylvatic (or jungle) yellow fever spreads when monkeys are bitten by wild mosquitoes that pass the virus on to other monkeys and humans.

2017年3月2日 · The yellow fever virus is transmitted by infected mosquitoes, most commonly from the Aedes species – the same mosquito that spreads the Zika, Chikungunya and Dengue virus. Haemogogus mosquitoes also spread yellow fever and are mostly found in the jungle. Mosquitoes become infected with the virus when they bite an infected human or monkey.

Yellow fever (YF) is a mosquito-borne, viral haemorrhagic fever that is endemic in tropical regions of Africa and South America. "Aedes Aegypti" is the vector of YF virus in the urban human-to-human cycle of the transmission, whereas in the jungle (forest, sylvatic) monkey-to-monkey - and accidentally monkey-to-human - cycle, several different ...

2021年12月1日 · Ghana is a high priority country for the Eliminate Yellow Fever Epidemic (EYE) strategy. Vaccination is the primary means for prevention and control of YF. In 1992, the Government of Ghana introduced YF vaccine into the routine immunization programme for children at 9 months as part of the national YF control and elimination programme.

The YF vaccine is given as a single subcutaneous or intramuscular injection. Some countries require an International Certificate of Vaccination against yellow fever for incoming visitors. Vaccination for this purpose is done in nationally authorized sites using WHO prequalified YF vaccine. Yellow Fever Vaccine Standardization. Written Standards

Yellow fever-specific means that the results of antibody tests (such as IgM or neutralizing antibody) for other prevalent flavivirues are negative or not significant. Testing should include at least IgM for dengue fever and West Nile but may include other flaviviruses according to local epidemiology (for example, Zika virus).

2023年5月31日 · Garske T. et al. Yellow fever in Africa: Estimating the burden of disease and impact of mass vaccination from outbreak and serological data. PLoS Med.2014;11(5):e1001638 - https://pubmed.ncbi.nlm.nih.gov/24800812/

Confirmed yellow fever cases, including those confirmed clinically, epidemiologically, or by laboratory investigation. Cases that have been discarded following laboratory investigation should not be included.

2021年12月23日 · 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. From 1 January 2021 to 26 August 2022, a total of 12 countries in the region have …