Symptoms of yellow fever as Foreign Office warns of increased risk in one country

The Foreign Office has updated its travel advice for one country, amidst an increased number of yellow fever cases. While the UK Government department warns against 'all but essential travel to parts of the nation', any visitors must get vaccinations beforehand.

"There are increasing cases of yellow fever in , especially in the Departments of Tolima and Cundinamarca," advice from . "Yellow fever vaccination certificates are required for travellers who have recently visited or transited higher-risk countries or those visiting areas of higher risk within Colombia.

"Consult the for more information, including on vaccination." Yellow fever is a severe illness spread through the bite of an infected mosquito.

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The that such an infection is especially prevalent in Africa, below the Sahara desert, and areas of South America and Central America. It is not found in the UK, Europe, , New Zealand, Asia or the Pacific Islands.

Many symptoms of yellow fever initially appear similar to the flu and often include:

• Lack of appetite
• High temperatures
• Nausea or vomiting
• Aches and pains
• Headaches
• Generally feeling unwell

However, the cautions that more severe cases may give rise to:

• Dark urine
• Stomach pain
• Yellowing of the skin or eyes
• Bleeding from the eyes, nose, mouth or stomach
• Blood in vomit or poo

Although most people recover from yellow fever within three to four days, many symptoms can be fatal. Anyone feeling unwell after visiting a country where yellow fever is found should ask for an urgent medical appointment as soon as possible.

"You can get yellow fever if you're bitten by an infected mosquito," NHS guidance adds. "The mosquitoes that carry the yellow fever virus bite during the day."

If you are still keen to visit Colombia or any other nation impacted by yellow fever, it is essential to get vaccinated. These jabs are usually safe for individuals aged nine months old or over and should be received from registered centres.

Not only will a jab protect you from infection, but a yellow fever certificate may also be required to enter certain nations. Travellers can check the health advice for any relevant country using the .

Beyond this, it is worth acknowledging that you can avoid mosquito bites by taking specific measures while travelling. Using insect repellent, wearing long-sleeved clothing and keeping windows closed where possible may help.

You could also purchase a portable, protective mosquito net to place over your bed during the day and while you sleep.