E. coli outbreak in US linked to burrito outlets spreads

An outbreak of E. coli bacteria linked to Chipotle Mexican Grill restaurants has spread, with the number of people  sickened rising from 22 to 37, US authorities said.

In the northwest state of Washington 25 people have been infected, up from 19. Twenty-three of them reported eating at a Chipotle burrito outlet before getting sick and nine were hospitalized, the state health department said.