In September and October 2022, the Institut Pasteur in Dakar confirmed four yellow fever cases from Niger, including one death. The cases were confirmed by plaque reduction neutralization test (PRNT) and were reported from Dosso, Zinder, Tahoua, and Adadez districts. The date of onset of symptoms for the last case was 14 August 2022. Two probable cases were reported during the same period.
Yellow fever is an acute viral hemorrhagic fever that is spread through 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 yellow fever virus will develop severe illness that can lead to liver disease, bleeding, shock, organ failure, yellowing skin (jaundice), and sometimes death. Among those who develop severe disease, 30-60% die.
There is no medicine to treat or cure infection. To prevent getting sick from yellow fever, use insect repellent, wear long-sleeved shirts and long pants, and get vaccinated.
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