The Associated Press has reported a case of polio in Rockland County, NY.  Based on available data, health officials there say the person contracted polio via someone who received a live version of the polio vaccine.

The news comes after traces of poliovirus were found in sewage samples at a treatment facility on the outskirts of London.

The last case of polio in the US was in 2013. In the current case, health experts traced the infection to travel.

The full story, along with more detailed information on the current US case is available by clicking here.