Guinea: Yellow fever outbreak reported in Koundara Prefecture, Nov. 6-Dec. 15, 2020

Event

Health officials in Guinea reported a yellow fever (YF) outbreak in Koundara Prefecture, Boke Region, during 2020 with more than 50 cases reported Nov. 6-Dec.15. The most affected area is Sambailo, reporting 21 YF cases. Routine vaccination has been implemented especially for children aged 9 months to 5 years and in-depth investigations surrounding suspected YF cases are ongoing. This represents the most complete information available as of Dec. 24.

Context

The last notable YF outbreak in Guinea was reported 2000-2001, when 688 cases were reported. Guinea is classified as a YF endemic country. Many countries require proof of YF vaccination or a valid medical waiver for any traveler who has visited or transited through endemic countries. Vaccination is recommended for all travelers; however, vaccination is required upon arrival for all travelers aged one year or over who have visited a country with a risk of YF transmission.

Yellow fever is transmitted through the bite of an infected mosquito. Most infected individuals have no illness or only mild illness. Symptoms typically include fever, muscle pain, backaches, and chills. However, about 15 percent of people develop serious illness that can lead to potentially fatal bleeding and organ failure. Symptoms typically appear 3-6 days after being bitten, but can develop up to 9 days after exposure.

Advice

Consult a travel medicine provider about the need for yellow fever vaccination. Avoid mosquito bites and remove standing water to reduce the number of biting mosquitoes. Seek medical attention if symptoms develop within two weeks of being in affected areas. Do not use aspirin or ibuprofen products if yellow fever is suspected, as these could exacerbate bleeding tendencies associated with the disease.