City Council Speaker Julie Menin called for a probe Thursday into the Zohran Mamdani-led Department of Health over its “Global Oppression Working Group” and whether taxpayer funds were misused.

The public health agency is facing increasing heat over its apparent fixation on Israel and the Gaza war — as the Big Apple grapples with a trifecta of respiratory illnesses that have sickened thousands.

“Our health care officials should be fighting infectious diseases and addressing skyrocketing health care costs instead of spending public time debating geopolitics on city time,” Menin (D-Manhattan) told The Post.

“A thorough investigation into the use of taxpayer resources is necessary to protect the public trust and address the unacceptable rise in antisemitism across New York City.”

As The Post exclusively reported, the DOH group was created by staffers accusing Israel of genocide in Gaza, with participants meeting in the middle of the workday Tuesday at the agency’s headquarters in Long Island City and remotely.

While the taxpayer-funded employees were meeting, the health department continued to face thousands of cases of flu and RSV across the five boroughs.

The city was also dealing with Legionella bacteria recently discovered at a large Harlem apartment complex, according to reports.

It followed the outbreak of Legionnaires’ disease that hit the city in the fall, sickening 100 people and tragically killing at least seven.

Council Member Lynn Schulman (D-Queens), the health committee chair, ripped into the politicization of the agency as fanning the flames of antisemitism.

“This incident is especially troubling given the alarming rise of antisemitism we are seeing in New York City — including multiple antisemitic reported in recent weeks,” Schulman said.

“Hosting a meeting that promotes inflammatory accusations while ignoring antisemitism entirely only deepens and alienates Jewish employees and residents.”

Both Menin and Schulman are Jewish and represent districts with a large number of pro-Israel Jewish constituents.

“City employees are public servants, and with that comes a responsibility to use taxpayer-funded time and resources appropriately,” Schulman said. “Politicizing a public health agency undermines trust, morale and the core mission of the department.”

Schulman said she spoke to DOH brass about the Israel-bashing group, and was pleased to learn that “an investigation is underway,” though no additional information about the apparent internal probe was immediately available. 

Neither the health department nor City Hall returned messages seeking comment.

But the DOH did issue a press release Thursday boasting about becoming the first municipal health department in the nation to join the World Health Organization’s Global Outbreak Alert & Response Network. 

Mamdani, meanwhile, dodged a Post reporter following an unrelated press conference Thursday afternoon.

Mark Treyger, the CEO of the Jewish Community Relations Council, said the creation of a health department group to demonize Israel was beyond the pale.

“This is clear political activity in a city agency during work time, which also made staff feel unsafe and unwelcome,” Treyger said.

“In addition to the Health Department’s leadership ensuring accountability, City Hall needs to remind all agencies about city rules and regulations, including ensuring all staff feel welcome, safe, and supported,” he said. “That is non-negotiable.”

Jewish workers in other city agencies — including the Department of Education — said they were alarmed by the politicization of the DOH.

“Antisemitic and Anti Israel presentations are happening across city agencies. Working in NYC, whether it’s the DOH or DOE [Department of Education] is very difficult,” said Moshe Spern, president of the NYC United Jewish Teachers.

“Jewish city workers are struggling and honestly all agencies are turning a blind eye. That is why we are all collaborating together. They cannot and will not divide the Jewish community anymore. We cannot allow this bias in NYC to continue.”

The working group’s mission statement, included as part of the slide presentation at the meeting, said its formation was a “cross-divisional effort led by Division Equity Liaisons (DELs) and action teams from Disease Control.”

“Developed in response to the ongoing genocide in Palestine, the working group aims to address the growing interest among health department staff to learn about current and ongoing  global oppression in its many forms and how it influences the advancement of health equity,” the group statement said.

GOPH said its goals were to better understand the impact of global oppression on “the health and well-being of priority communities in NYC vis-à-vis trauma, violence and discrimination” as well as “supporting colleagues negatively impacted” by it, according to a slideshow presented at the meeting.

There were more than 2,000 confirmed RSV cases between the week of Jan. 25 and Jan. 31, according to the latest available data. But New Yorkers younger than 5 years old are making up most of the cases, health officials said.

There were more than 1,400 new flu cases in the same timeframe in the city, according to the data, though it marked a downward trend compared to earlier this winter. Overall, 144,000 people have suffered from the flu this season.

COVID cases remained relatively low at about 800 reported last week, data showed.

Other city lawmakers from both sides of the aisle were also outraged about the Israel-bashing working group.

Republican Brooklyn Councilwoman Inna Vernikov wrote on X that it was “against [the] policy of city agencies to engage in politics using taxpayer dollars.”

“New Yorkers expect our public health agency to focus on protecting lives and delivering essential services to City residents, not engaging in divisive geopolitical advocacy on the taxpayer’s dime,” said Councilwoman Virginia Maloney (D-Manhattan).