Food poisoning

The warning comes as many Brits to prepare to go on their summer holidays

Holidaymakers have been warned to protect themselves against mosquitoes as health officials published new data on infections imported into the UK. The UK Health Security Agency (UKHSA) said diseases spread by mosquitoes, such as dengue fever and Zika virus, can be harmful for some people.

It urged travellers to use insect repellent, wear long sleeves and trousers and sleep under a treated bed net if necessary. People should also get any jabs they need for travel and check whether they need malaria tablets.

Dengue fever can feel similar to flu and symptoms include high temperature, severe headache, pain behind the eyes, muscle and joint pain and feeling sick. Chikungunya symptoms include fever, joint pain, headache, muscle pain, joint swelling and rash.

Most people with Zika suffer a mild illness, but it is serious in pregnant women and can cause stillbirth, miscarriage, problems with development and unusually small heads. Meanwhile, malaria can prove fatal, with symptoms including fever, vomiting and pain.

The UKHSA said eight Zika virus cases were reported from January to June 2026 – already above the seven cases recorded in 2025. Four of these were from Indonesia. Some 137 cases of imported dengue were reported in England from January to June this year, with South-East Asia and South Asia remaining the most common regions where people caught it. Some 27 cases were linked to travel to Thailand and 19 to the Maldives.

For comparison, the overall number of cases by the end of June last year was 161, though cases also tend to rise later in the year. A total of 59 chikungunya cases were reported from January to June this year, with Sri Lanka being the most commonly reported country of travel, accounting for 18 cases. There were 73 in the same period last year.

Meanwhile, 557 malaria cases were reported in England, Wales and Northern Ireland from January to May. Last year at the same point, there were 548. As well as mosquito-borne illnesses, there were 287 cases of typhoid and paratyphoid fever between January and June this year.

Typhoid and paratyphoid are caused by Salmonella bacteria, which is usually spread through contaminated food or water. Mosquitoes rely on standing water to lay their eggs. It then needs to be warm enough for the eggs to hatch, which can take just a few days if temperatures are high enough.

Dr Hilary Kirkbride, consultant epidemiologist and head of travel health at UKHSA, said: “Summer is a popular time to travel – don’t let illness spoil your holidays. Good preparation and planning is important for a safe and enjoyable trip.

“Check the TravelHealthPro website for the latest health advice for your destination, including which vaccines you may need and any important medications, such as anti-malarial tablets.

“To protect against mosquito-borne infections, use insect repellent, cover exposed skin and sleep under a treated bed net where needed. For enteric fever and other stomach bugs, make sure you take good food and water hygiene precautions.

“Even if you have visited a country before, you do not have the same level of natural protection against infections as permanent residents, so it is important to take precautions every time you travel.

“And if you are pregnant or trying to conceive, there are special precautions you should take, so please speak to a doctor, nurse or local travel clinic before planning your trip.”

Natalie Hitchins, Which? head of home products and services, said: “If you’re travelling somewhere that has mosquitoes, it’s worth checking that your repellent will actually do the job before you go.

“Which? tests found that while some repellents provided effective protection for almost 10 hours, some trendy alternatives failed to prevent bites for longer than a few minutes.

“Look for products containing active ingredients such as Deet, Icaridin (picaridin) or PMD, rather than relying on marketing claims alone.

“Insect repellent can help protect against mosquito bites, but it should be used alongside – never as a replacement for – any vaccinations or medications recommended by a healthcare professional.”

Certain holiday destinations have seen a rise in cases of a nasty infection

British travellers have been issued a food warning amid an outbreak of a bug that causes “explosive” diarrhoea. Mexico and the US are among some of the holiday destinations that have seen a rise in cyclosporiasis.

Cyclosporiasis is an infection caused by a microscopic parasite called Cyclospora. This is typically spread by eating food or drinking water contaminated with human faeces containing the parasite.

Symptoms can include “watery diarrhoea” and “explosive bowel movements”, and can last several weeks. In an update provided on its website, Travel Health Pro explained that “most” UK cases have been linked to visits to Mexico.

It said: “Cyclospora is a parasite found in some tropical and subtropical countries. In the UK, infections are most commonly linked to summer travel abroad.

“Cyclospora has been found in Central and South America, South and Southeast Asia, and most UK travel-related cases and outbreaks have been associated with visits to Mexico.”

The US Centres for Disease Control and Prevention (CDC) also recently published data showing there had been 843 confirmed cases of cyclosporiasis in the US between May 1 and July 9 this year. No deaths have been reported, and 86 people were admitted to hospital, the CDC said.

As part of its advice, Travel Health Pro provided guidance on eating while abroad. It said: “People usually become infected by eating or drinking food or water contaminated with human faeces. Foods most commonly linked to Cyclospora include fresh produce such as soft or unpeeled fruit, lettuce, green salads and herbs like coriander or basil.”

It continued: “You can reduce your risk of Cyclospora infection by following good food and water hygiene, even if you are staying in a luxury hotel or high-end all-inclusive resort.” To do so it said you should:

• Wash your hands regularly with soap and clean water; use alcohol hand gel only when handwashing is not possible
• Where there is no clean water supply, drink only bottled or boiled tap water (this includes brushing your teeth)
• Avoid ice in drinks
• Avoid fresh produce that may not have been washed with bottled or boiled water, including berries, salads, vegetables and herbs like basil or coriander
• Choose fruit that you can peel yourself, such as bananas and oranges
• Eat food that has been freshly cooked and is served hot
• Remember that smoothies, juices and other drinks may contain raw fruit, herbs or vegetables

Symptoms

Travel Health Pro said: “Not everyone infected with Cyclospora will become ill. If you do get symptoms, they will usually start about a week after consuming contaminated food or drinks.”

Symptoms of Cyclosporiasis include:

• Watery diarrhoea
• Fever
• Stomach cramps
• Loss of appetite and weight loss
• Tiredness and muscle pain
• Bloating and excess wind
• Feeling sick

It said: “Cyclospora infections are usually mild and resolve themselves. However, symptoms can sometimes last for several weeks and return even after a person seems to have recovered. People with a weakened immune system, including those living with HIV, may be at greater risk of severe illness.”

The CDC added: “Cyclospora infects the small intestine (bowel) and usually causes watery diarrhoea with frequent and sometimes explosive bowel movements.”

When to seek help

Travel Health Pro says you should do the following if you become ill abroad:

• Drink plenty of “safe” fluids, such as bottled water, or tap water that has been thoroughly boiled and cooled
• Use oral rehydration solutions so that you do not become dehydrated
• Get early medical advice if you have a weakened immune system or are at higher risk of complications
• Seek medical help if your symptoms are severe or do not improve

If you are back in the UK, you should ask for an urgent GP appointment or get help from NHS 111 if you have diarrhoea and you’ve recently travelled abroad and:

• The diarrhoea is severe and has lasted for more than three days
• You have bloody diarrhoea or bleeding from your bottom
• You have a high temperature (fever)
• You are dehydrated
• You have a weakened immune system or other condition

The NHS said: “If you’re still abroad, get medical advice where you are as soon as possible.”

An investigation by consumer group Which? claims Tripadvisor’s new summary AI tool has failed to include key information from its own reviews

Holidaymakers are in danger at being put at by travel review giant Tripadvisor’s new artificial intelligence tool, it has been claimed.

Tripadvisor’s hugely popular website now includes an AI generated summary of hotels and other businesses, designed to save potential guests having to scroll through all the other posted feedback. However, consumer group Which? says it found round-ups that masked reports of food poisoning, sexual harassment and serious hygiene failures.

They include a five-star hotel in Cape Verde now involved in a group legal action representing at least 412 holidaymakers who say they became ill after staying at the property.

Nicky Morley, 55, from Devon, holidayed at the five-star Riu Palace Santa Maria in May 2022, with her husband, when she became so ill that she says thought she was “going to die”. She told ITV News: “I was trying to get breath, but (the vomiting was) so strong and so violent, I started to choke, and I was really panicking.”

Yet, according to Which?, Tripadvisor’s AI summary of the Riu Palace described it as “popular with many travellers”, with “diverse restaurants” that earn ‘rave reviews’ and “spotless” cleanliness. The summary has since been removed.

Recent guest reviews on Tripadvisor also painted a very different picture. One described the Riu Palace as having “exceptionally poor hygiene”, while another said she was served raw chicken. Others shared photographs of flies and birds in the buffet food and another spotted “dead little roasted mice by the sitting area” on her “nightmare” holiday.

Which? checked in March this year and said there were 102 mentions of food poisoning at the Riu Palace. The consumer group also singled out a hotel in the popular Mexican resort of Cancun where several guests left reviews saying they fell ill, including a wedding party. Yet Tripadvisor’s AI overview once again gave a glowing summary, describing its “immaculate cleanliness”.

It also highlighted a hotel on the Antalya coast in Turkey where several reviewers who visited last summer wrote they felt unsafe due to repeated sexual harassment from male hotel staff, including inappropriate jokes and gestures, and repeated requests to connect on social media. Yet the Tripadvisor AI review summarised its service as “friendly”. The closest it comes to referring to the serious allegations is: “Lapses (in service) noted by a few”.

Rory Boland, editor of Which? Travel said: “Tripadvisor may insist users can still fact-check its summaries against real reviews, but this ignores the fact that it made the decision to push these summaries to the very top of the page. This failure to surface critical safety information is unacceptable and potentially life-threatening.

“The platform has a responsibility to revisit the accuracy of its AI summaries and AI chatbot. In the meantime, users should scroll past these summaries and look at guest reviews, particularly one-star ratings, and at reviews on other sites, to make sure their next stay is a safe one.”

A spokesperson for Tripadvisor said: “We fundamentally disagree with the premise of this investigation. Our AI Summaries have been designed to uphold the integrity and transparency that has made Tripadvisor trusted by millions of travelers for over 25 years. They provide snapshots based on high volumes of user generated content and explicitly are not intended to replace individual reviews. Users can easily click to see the traveller quotes behind each review element or access all reviews for that listing, eliminating any need to blindly trust AI-generated content.

“We also have comprehensive safeguards in place to ensure important safety information is properly reflected across our platform. Our AI systems are designed to capture all types of traveller feedback and we continuously monitor and refine our models. Our systems automatically suppress AI Summaries for listings that feature warnings from travellers about serious safety incidents such as death, drugging or sexual assault, helping ensure this content is highly visible to our community.

“No review content has been suppressed or hidden by the introduction of these tools, and the suggestion they pose danger to travellers is an unfounded claim that seems designed to generate controversy rather than inform readers. We believe our community understands that AI technology is still developing and has the common sense to check any AI advice against Tripadvisor’s billion-plus reviews and contributions.”