As the summer holiday season kicks off, it's crucial to address the potential health risks associated with international travel. The UK Health Security Agency (UKHSA) has issued a timely reminder for travellers to be vigilant and take necessary precautions to avoid infections while abroad.
In this article, I'll delve into the key infections travellers should be aware of, the regions of concern, and the simple yet effective measures that can be taken to ensure a safe and enjoyable trip.
Mosquito-Borne Infections: A Growing Concern
Mosquito-borne infections, such as dengue, Zika, chikungunya, and malaria, pose a significant threat to travellers. These infections can cause a range of symptoms, from fever and headaches to muscle pain and nausea. While some individuals may experience no symptoms at all, these diseases can be serious and even life-threatening.
What makes this particularly fascinating is the geographical distribution of these infections. South-East Asia and South Asia are the most common regions of exposure for dengue, with Thailand and the Maldives being popular travel destinations. Indonesia, on the other hand, has seen a notable increase in Zika cases, with four out of eight cases reported in 2026 so far.
The Importance of Prevention
Prevention is key when it comes to mosquito-borne infections. Travellers can protect themselves by using insect repellent, covering exposed skin, and sleeping under treated bed nets when necessary. Additionally, practising good food and water hygiene is essential to avoid enteric fever, caused by Salmonella bacteria, which is commonly spread through contaminated food or water.
Dengue and Zika: Rising Cases and Regional Trends
The latest data shows a concerning rise in dengue cases, with 137 reported in England from January to June 2026. This trend is consistent with previous years, as mosquito-borne infections are commonly reported during the spring and summer travel months. Zika cases have also exceeded the previous year's total, with Indonesia emerging as a country of concern.
Malaria: A Preventable Fatality
Malaria, another mosquito-borne infection, is potentially fatal but almost entirely preventable. A total of 557 malaria cases were reported in England, Wales, and Northern Ireland from January to May 2026. The key to prevention lies in taking antimalarial tablets correctly and following the recommended guidelines.
Enteric Fever: A Serious but Preventable Illness
Enteric fever, including typhoid and paratyphoid fever, is another serious illness caused by Salmonella bacteria. A total of 287 travel-associated enteric fever cases were reported from January to June 2026. These illnesses are usually spread through contaminated food or water, highlighting the importance of practising good food and water hygiene.
Special Considerations for Pregnant Travellers
Pregnant travellers face unique challenges when it comes to infection prevention. Zika, for instance, poses a significant risk during pregnancy as it can be passed to the unborn baby and cause birth defects. It's crucial for pregnant individuals or those trying to conceive to consult with a healthcare professional before planning their trip to ensure they take the necessary precautions.
Measles: A Global Concern
Measles, a highly contagious disease, continues to circulate in parts of the UK and worldwide. It can lead to serious complications, including ear and chest infections, and in rare cases, inflammation of the brain. The best protection against measles is through vaccination, with two doses of the MMR or MMRV vaccine being highly recommended for travellers and their families.
Conclusion: A Call for Vigilance and Preparation
As travellers embark on their summer adventures, it's essential to remember that even familiar destinations may pose new health risks. By staying informed, practising good hygiene, and taking the necessary precautions, travellers can ensure a safe and memorable journey. The UKHSA's reminders serve as a timely wake-up call, encouraging us to prioritize our health and well-being while exploring the world.
In my opinion, this article highlights the importance of individual responsibility and global health awareness. By staying vigilant and informed, we can protect ourselves and contribute to a healthier global community.
