diarrhoea

Symptoms of O121 E. coli include severe stomach cramps, diarrhoea and vomiting, and usually start three to four days after swallowing the bacteria.

Norovirus is a stomach bug that causes vomiting and diarrhoea, and the germs cannot be killed with alcohol hand gel.

Those that affect the digestive system can cause diarrhoea and stomach pains, and, according to the health service, what causes them is "not fully understood".

Even boiled "it causes diarrhoea and abdominal pain", says one woman, Nyakal.

Clothes go unwashed and families can’t bathe their children properly, meaning skin diseases and diarrhoea are widespread.