There are currently no compulsory vaccinations for those travelling to the Maltese Islands from the UK. Holders of a European Health Insurance Card (EHIC) are able to access reduced cost or free state-provided health care (whilst the card is still valid which may be subject to Brexit). Alternatively consult your doctor. Please note that the EHIC is not a substitute for travel insurance and does not cover private medical care or the cost of such things as repatriation.