Acute Viral Haemorrhagic Disease Transmitted By Infected Mosquitoes

Yellow fever is an acute viral haemorrhagic disease transmitted by infected mosquitoes. The “yellow” in the name refers to the jaundice that affects some patients; The ongoing outbreak of yellow fever in Angola has global public health officials closely monitoring the situation.

But Currently, all regions in Angola should be considering as areas at high risk of transmission of yellow fever; where a small proportion of patients who contract the virus develop severe symptoms and approximately half of those die within 7 to 10 days.The yellow fever outbreak in Uganda is unrelated to the outbreak in Angola. Yellow fever is a viral hemorrhagic fever that is spreading by infecting mosquitos.

Viral haemorrhagic disease

But unlike other hemorrhagic diseases such as Ebola and Marburg; yellow fever cannot be spreading person to person; But there are some reactions from the live vaccine that are rarely; but potentially life threatening; It’s not a vaccine we recommend for everyone across the board. You have to weigh your risks and benefits.

More than 47 countries in Africa and Central and South America are either endemic for; or have regions that are endemic for, yellow fever. A modelling study based on African data sources estimated the burden of yellow fever during 2013 was 84 000–170 000 severe cases and 29 000–60 000 deaths.

Potentially life threatening

Large epidemics of yellow fever occur when infected people introduce the virus into heavily populated areas with high mosquito density and where most people have little or no immunity; due to lack of vaccination. In these conditions, infected mosquitoes of the Aedes aegypti specie transmit the virus from person to person.

If you are going to an area that is knowing to be endemic with yellow fever; and if you are at high risk of being bitten by a mosquito; then the risk of the vaccine is much lower than risk of infection.Yellow fever infection is often very serious and potentially fatal; It is important for those who are contemplating going to one of these endemic areas of yellow fever to consult with a travel medicine expert to discuss the risk of vaccine.