Tests found 73 per cent of supermarket chickens contained campylobacter . Poisoning bug makes 280,000 people ill every year and can cause death . Almost one in five birds was highly dangerous , FSA figures revealed . FSA told stores it expected them to reduce number of contaminated birds . But official watchdog revealed last month most stores failing to fully co-operate .
Tests found 73 per cent of supermarket chickens contained campylobacter . Poisoning bug makes 280,000 people ill every year and can cause death . Almost one in five birds was highly dangerous , FSA figures revealed . FSA told stores it expected them to reduce number of contaminated birds . But official watchdog revealed today most stores failing to fully co-operate .