New data from the Centers for Disease Control and Prevention has found four wastewater samples with polio in Sullivan County.

Health officials say the tests date back to June and July and are linked to the case in Rockland County found earlier this summer.

More wastewater samples have also been found in Orange County and New York City. County health officials say your best protection is getting vaccinated.

"Our public health system is quietly working very hard behind the scenes as it always does, and we need the public to know that we're here to answer their questions and provide resources," says Nancy McGraw, the Public Health Director of Sullivan County.

The state Health Department says Sullivan County's vaccination rate is just over 60% which is below the statewide average of nearly 80%.