By Brendan O’Brien (Reuters) -A case of polio has been identified outside New York City and confirmed by federal health officials, the New York State Health Department said on Thursday in what would be the nation’s first known case of the disease in at least 30 years. Testing suggested the Rockland County case of the highly contagious virus may have originated outside of the United States, the department said in statement. “We are monitoring the situation closely and working with the New York State Department of Health and the Centers for Disease Control and Prevention to respond to this emerg…