First widely acknowledged in 2014, the disease seems to ebb and flow on a two-year cycle, with an uptick in 2016 and again this year, according to an advisory from the Philadelphia Department of Public Health.
By Tom Avril
First widely acknowledged in 2014, the disease seems to ebb and flow on a two-year cycle, with an uptick in 2016 and again this year, according to an advisory from the Philadelphia Department of Public Health.
By Tom Avril