Expert advice from a travel doctor after gastric illness reports in Cape Verde Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice The deaths of four British people in three months while on holiday in Cape Verde have sparked concerns over health and safety while travelling