Yellow Fever is a viral infection caused by RNA viruses belonging to the Flavivirus genus. It is a zoonosis (an animal disease that can spread to humans) primarily transmitted by daytime biting Aedes Aegypti female mosquitoes, but also by mosquitoes belonging to the Haemagogus genus. After transmission of the virus from a mosquito, the viruses replicate in the lymph nodes and infect dendritic cells in particular. From there they reach the liver and infect hepatocytes. Yellow Fever is a vaccine preventable disease. Vaccination is recommended for persons over 9 months of age travelling to or living in endemic areas. The vaccine offers long term protection.
Key words: Yellow fever, Aedes Mosquito, Viral haemorrhagic Disease.
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