Some 430 people have now reported falling ill with a stomach bug after visiting a spring folk festival in Stuttgart in south-western Germany, a municipal spokesman said on Thursday. There had been 400 cases reported on Saturday and a further 30 on Sunday, he said. Earlier reports had referred to 300 infected people. The authorities are assuming that many more have been affected, as ailments of this kind can easily be passed on within the family. All those infected had visited the same tent and had later reported symptoms including vomiting, nausea and diarrhoea, the spokesman said. The highly …