In a departure from Mayor Bill de Blasio, acting Queens Borough President Sharon Lee on Sunday urged parents to keep their kids home from school as “the fast-developing” coronavirus sweeps through the Big Apple.

“I strongly urge all Queens families, in no uncertain terms, to keep all children home away from school this week,” Lee said in a statement.a

Lee’s plea comes as the mayor takes heat for not shuttering city schools, even as the COVID-19 bug continues to spread.

On Saturday, the head of New York’s teacher’s union told members in a scathing email that de Blasio was putting students and teachers at risk because of “his irresponsible decision” to keep schools open.

De Blasio on Sunday conceded to CNN that the city does not have a backup plan if it closed the city’s public schools, saying that while there are contingencies being set up, “they are far from perfect.”

The Post reported Saturday that an NYPD school safety officer at a Queens elementary school was admitted to the hospital with coronavirus symptoms.