Yellow fever – Nigeria
The Nigeria Centre for Disease Control (NCDC) is reporting yellow fever outbreaks in multiple states (Bauchi, Benue, Delta, Ebonyi, and Enugu). From 1 January 2021 to 28 February 2022, a total of 2,456 yellow fever (YF) suspected cases were reported from 526 Local Government Areas (LGA) in 37 states in Nigeria. Of suspected cases, 54 tested positive. Three deaths were reported among confirmed cases.
The US Centres for Disease Control and Prevention (CDC) recommends that all travellers 9 months or older going to Nigeria should receive vaccination against yellow fever at least 10 days before travel.
Photo: Electron micro-graph of Yellow Fever Virus.
Yellow fever is a viral disease, of typically short duration, caused by the bite of an infected female mosquito. Only humans and primates can catch the disease. In most cases infection will be accompanied by fever, chills and loss of appetite. Muscle pains and headaches are also typical symptoms that improve within 5 days.
In about 15% of people, within a day of improving the fever comes back, abdominal pain occurs, and liver damage begins causing yellow skin. Death occurs in up to half of those who get severe disease.
A safe and effective vaccine against yellow fever exists, and some countries require vaccinations for travelers.
The disease originated in Africa and spread to South America in the 17th century with the Spanish and Portuguese importation of enslaved Africans from sub-Saharan Africa. Since the 17th century, several major outbreaks of the disease have occurred in the Americas, Africa, and Europe. In the 18th and 19th centuries, yellow fever was considered one of the most dangerous infectious diseases.
In 1927, yellow fever virus was the first human virus to be isolated.
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