E Coli Outbreak 2024 Symptoms 2024. Coli o157:h7 have been reported from 14 states. Coli symptoms usually start about two to seven days after exposure, cbs news chief medical correspondent dr.

Symptoms of infections with stec include severe and sometimes bloody diarrhoea, stomach cramps, vomiting and fever. Symptoms begin anywhere from a few days after consuming contaminated food or up to nine days later.