Americans across dozens of states have fallen victim to a microscopic foodborne parasite that can cause "explosive diarrhoea", US health authorities said.

There are now more than 700 cases in Michigan, up from just 572 over the weekend, as other states also see increase

Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.AllNewsSportCultureLifestyle(Getty/iStock)A cyclospora parasite causing…

An unprecedented 700-plus cases have been reported in Michigan alone

A "large and growing outbreak"