More than 3,000 people are stranded on board a cruise ship off the East African island of Mauritius due to a suspected cholera outbreak. Following a series of gastrointestinal illnesses on board the Norwegian Dawn, the authorities in Mauritius refused to allow the ship to dock in the harbour of the capital Port Louis on Sunday, after the French island of La Réunion had already turned the ship away. Southern Africa is currently experiencing one of the worst cholera outbreaks in years. The majority of the 2,184 passengers were supposed to start their journey home on Sunday. At the same time, 2,2…