diarrhoea

A large number of children suffer from diarrhoea and pneumonia due to the poor hygiene, malnutrition and miserable living conditions, but adequate medication is rarely available.

The species is considered to be shy, and bites - though uncommon - can cause swelling, nausea and diarrhoea.

Symptoms of Ebola infection include fever, fatigue, muscle pain, headache, and sore throat, followed by vomiting, diarrhoea, rash, and internal and external bleeding.

Norovirus symptoms include nausea, vomiting and diarrhoea but a high temperature, abdominal pains and aching limbs are also common.

Chlorate's effects on humans when taken in excess include nausea, vomiting, diarrhoea, and limiting the blood's ability to absorb oxygen, added Ms Grazette, citing recent research into the chemical.