The changing climate is reshaping the landscape of travel medicine, prompting a need for updated guidance for travelers and increased awareness of emerging health risks. As global temperatures rise and ecosystems shift, infectious diseases once confined to specific regions are expanding their reach, according to experts discussing the issue at the Forum Reisen und Gesundheit.
The geographical distribution of risks is changing, with vectors like ticks and mosquitoes colonizing new habitats and introducing new pathogens. This means that diseases previously considered exotic are becoming more prevalent in areas closer to home, even in regions like Austria, where dengue fever is now a growing concern.
Travelers are advised to take preventative measures to minimize their risk of infection. These include drinking only boiled, filtered, or bottled water; avoiding unpasteurized foods and undercooked dishes; wearing protective clothing; using insect repellent; practicing safe sex; avoiding unknown bodies of water; maintaining distance from animals; and receiving an appropriate vaccination schedule.
Even domestic travel isn’t without risk. The traditional guideline that ticks were not present above 1,000 meters in elevation is no longer reliable. Ticks are now found throughout Austria, and the tick season is lengthening. In 2024, an unusually high number of tick reports were submitted to the AGES (Austrian Agency for Health and Food Safety) as early as January.
The first case of tick-borne encephalitis (TBE), also known as FSME, with a disease onset in mid-February was reported in mid-March. While a vaccine for TBE already exists, its importance is growing. The vaccination schedule involves an initial series of three doses, followed by a booster after three years. After that, booster shots are recommended every five years until age 60, and then every three years. The vaccine is highly effective, demonstrating over 90% efficacy, and the virus is transmitted almost instantly through a tick bite.
These changes underscore the importance of comprehensive travel health consultations, taking into account individual risk factors – such as pregnancy, age, pre-existing conditions, and medications – as well as the specific conditions in the destination country. The findings highlight the need for proactive health measures to protect travelers in a world increasingly impacted by climate change.
