All 10 cases of West Nile virus diagnosed this year in Missouri have been in the St. Louis area, including one death.

That geographic detail is no longer available on the Missouri health department website, where cases of the mosquito-borne virus were provided by county from 2002 to 2017 but are now the state’s latest example of withholding information by citing privacy concerns.

The department will decide what information to release on a case-by-case basis, according to state health officials.

Department spokeswoman Megan Hopkins confirmed U.S. Centers for Disease Control and Prevention data showing that all West Nile virus cases in 2018 have been in St. Louis County or St. Louis. A records request from the state for county-level West Nile virus data is pending.

A hypothetical case of West Nile virus in Worth County, population 2,200, might not be revealed because of federal privacy laws, said department director Dr. Randall Williams, who was appointed to the position in 2017 by former Gov. Eric Greitens.