Old diseases making a comeback

Illnesses such as measles and tuberculosis had been thought to be on the wane. But doctors say these illnesses are coming back with a vengeance, largely because they're becoming drug-resistant. But increased infection rates are also because some parents are afraid to vaccinate their children. We meet one mother whose daughter hasn't had any of the usual jabs.

This week we're also in Haiti, where poor sanitary conditions after the 2010 earthquake have led to a cholera epidemic. Yet cholera hasn't been seen in Haiti for 100 years - scientists suspect the bug was brought in to the country by foreign aid workers. 

Finally it's to France where the old 'ailment of kings' is back. Gout is often associated with over-indulgence in centuries gone by. While in the past it was a sign of good living, it's now a source of shame, affecting primarily people with poor diets.