&ldquomore than 70 of fresh chickens being sold in the uk are contaminated,&rdquo bbc news reports.a food standards agency fsa investigation found worryingly high levels of contamination with the campylobacter bug, which can cause food poisoning, on chickens being sold across the country. the guardian reported a food scientist, professor tim lang, calling for a &ldquoboycott of supermarket chicken because of &39scandalous&39 levels of contamination&rdquo.campylobacter is a type of bacteria thought to be the leading cause of food poisoning in the uk.