Yellow fever case confirmed in Sierra Leone


news desk Laugh

the World Health Organization reported a case of suspected yellow fever (YF), a 67-year-old farmer from Kono District, Eastern Province, Sierra Leone, tested positive for YF by plaque reduction
The equivalent test (PRNT) at the Pasteur Institute in Dakar on October 19, 2022.


The onset of symptoms on May 25, 2022 was accompanied by fever. An investigation conducted on 5-6 November 2022 showed that he was not immune to yellow fever and that other signs and symptoms included a history of severe generalized body aches, muscle spasms and jaundice.

No other suspected cases were found during active case detection in the surrounding health facilities and in the community. The patient made a full recovery after treatment at the health facility and has since resumed his normal farming activities. According to estimates by the World Health Organization and UNICEF (WUENIC), vaccination coverage for yellow fever reached 85% in Sierra Leone in 2021.

Yellow fever is an acute viral hemorrhagic fever spread by the bites of infected mosquitoes.

Symptoms of yellow fever (fever, chills, headache, backache, and muscle aches) develop 3-6 days after infection. About 12% of people infected with the yellow fever virus develop severe disease that can lead to liver disease, bleeding, shock, organ failure, yellowing of the skin (jaundice), and sometimes death. Of those who become severely ill, 30-60% die.

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