At least 22 children have died as the authorities link cases to pesticide-tainted food from local vendors South Africa has declared a food poisoning outbreak a national disaster following the deaths of at least 22 children and hundreds of reported illnesses across the country, a local news agency reported on Thursday.  The crisis has been traced to food contaminated with insecticide compounds allegedly sold in township convenience stores known as spaza shops.   President Cyril Ramaphosa