Travellers are being urged to plan ahead and take precautions amid a rise in mosquito-borne infections, such as dengue and malaria, to pre-pandemic levels. Cases of the diseases have risen to levels not seen since 2019, the UK Health Security Agency (UKHSA) warned. Dengue is not usually serious but can be severe in some cases, with symptoms similar to flu. Malaria causes a fever, headaches, confusion and muscle pains among other symptoms and can be fatal. You can not catch either infection from another person. The majority of the UK’s registered cases were with people who caught the disease wh…