A yearlong outbreak of tuberculosis in the Kansas City, Kansas area has taken local experts aback, even if it does not appear to be the largest outbreak of the disease in U.S. history as a state health official claimed last week.

An outbreak of tuberculosis in the Kansas City area has grown into one of the largest ever recorded in the United States, with dozens of active cases of the infectious disease reported, according to health officials.

A CDC spokesperson identified two outbreaks in the last decade linked to more tuberculosis cases than the ongoing outbreak centered in Wyandotte County.