Yellow Fever: Causes, Symptoms, Diagnosis, Treatment And Prevention

what is yellow fever?


Yellow fever is found in Africa and South America’s tropical and subtropical regions. This Yellow fever mosquito bite is transmitted to humans through an infected mosquito. Yellow fever is a highly uncommon cause of sickness among US travelers. A fever with aches and pains might progress to severe liver illness with bleeding and yellowing skin (jaundice). Laboratory testing, symptoms, and travel history determine yellow fever infection. There is no treatment or cure for the condition. Use insect repellent, wear full-sleeved shirts and trousers, and get vaccinated to avoid getting sick from yellow fever.


A mosquito-borne virus causes yellow fever. You may contract if you are bitten by a mosquito carrying this virus. This is a prevalent disease in South America and Sub-Saharan Africa. Yellow fever can affect anyone, but the elderly are at a higher risk of severe yellow infection. Symptoms usually appear a week after being bitten by an infected insect.


Most people infected with yellow fever will have no or minor symptoms and recover entirely. The average duration from infection to illness for persons with symptoms is 3 to 6 days.

The beginning of yellow fever symptoms can include a quick onset of fever, chills, severe headache, back pain, general body pains, nausea, vomiting, weariness (tiredness), and weakness. The majority of persons who suffer symptoms recover within a week. For some people who recover, weariness and weakness (feeling fatigued) may remain for several months. A few people will acquire a more severe version of the disease.

One in every seven people who experience the early symptoms will experience a temporary remission (a period of feeling better), which may last only a few hours or a day, followed by a more severe form of the condition.

  • High temperature, yellow skin or eyes (jaundice), bleeding, shock, and organ failure are severe signs.
  • 30-60% of people who acquire severe illness die.
  • Once infected, you are most likely immune to future infections.


The healthcare practitioner will order a physical examination and blood tests. These blood tests may reveal liver and renal dysfunction and signs of shock.

It is critical to notify your healthcare physician if you have traveled to places where the disease is known to thrive. Blood tests can be used to confirm the yellow fever diagnosis.


The condition does not have a cure or yellow fever treatment. That is why it is critical to receive the vaccine and avoid mosquitos. To feel better, your doctor may urge you to get plenty of rest and drink enough water. Avoid taking pain relievers that can induce bleeding, such as aspirin or nonsteroidal anti-inflammatory medications (NSAIDs). If you have a severe yellow fever, you should be hospitalized.


Preventing the spread and impact of Yellow Fever hinges on effective measures. The most potent preventive measure is vaccination, specifically the Yellow Fever vaccine, which is a live attenuated virus vaccine providing durable immunity against the disease. International health organizations like the World Health Organization (WHO) advise individuals residing in or traveling to Yellow Fever endemic areas to receive this vaccine.

In addition to vaccination, controlling mosquitoes is also pivotal in prevention. This entails employing insect repellents, using bed nets, and eradicating mosquito breeding sites. Furthermore, closely monitoring and managing mosquito populations in affected regions are indispensable for reducing the risk of Yellow Fever outbreaks.

When To See a Doctor

Consult a primary care physician at least 10 to 14 days before traveling to an area where yellow fever is widespread to determine whether you should be immunized. If you or your kid develops a fever, headache, muscle aches, vomiting, or jaundice, contact your provider immediately, especially if you have recently traveled to a region where yellow fever is widespread.