An urgent warning has been issued for travellers heading to Spain, Greece, and France about the increase in cases of the tropical disease schistosomiasis. The disease, caused by a parasitic flatworm, is spreading due to climate change, with freshwater snails serving as carriers. Schistosomiasis is the second most prevalent infectious disease globally, with serious health complications if untreated. Research predicts that southern European countries will have climates conducive to the survival of the parasite-carrying snails. Climate change is linked to the rise of tropical diseases in Europe.Travelers are urged to take precautions while swimming in lakes, rivers and ponds to prevent contracting the disease.