The Centers for Disease Control and Prevention (CDC) is coordinating with federal agencies to monitor travelers entering the United States from Siberia amid concerns about a possible pneumonic plague outbreak in Russia, the agency's director revealed Wednesday.

CDC Director Dr. Erica Schwartz said the Trump administration is working across multiple agencies to identify travelers arriving from the region following the mysterious death of a Russian laboratory worker, while emphasizing that the risk to Americans remains minimal.

"We are very confident that the threat to the United States is extremely low," Schwartz said during a Wall Street Journal health forum Wednesday.

MOTHER OF DEAD RUSSIAN ANTI-PLAGUE INSTITUTE WORKER: 'I KNOW THE TRUTH' The concerns stem from the Oct. 2 death of Darya Shipilova, a 28-year-old employee of the Irkutsk Anti-Plague Research Institute in Siberia, whose death has fueled speculation about a possible pneumonic plague infection.

Russian authorities have maintained that Shipilova died from pneumonia of unknown origin and have not confirmed that she was infected with Yersinia pestis, the bacteria that causes pneumonic plague.

Schwartz said the CDC is working with the departments of Homeland Security, State and War, among other federal agencies, to track potential arrivals from the region.

"There are about 200 flights that come into the United States from Siberia, that region," Schwartz said, adding that those flights typically arrive at New York's John F. Kennedy International Airport.

"We have a port health station set up in JFK so that we can do appropriate surveillance and screening if anyone from that area comes into the United States," she continued.

The CDC director stressed that while pneumonic plague is a serious bacterial infection capable of spreading between people through respiratory droplets, early detection and treatment can prevent deaths.

TRUMP RESPONDS TO CONCERNS OVER SUSPECTED PLAGUE CASE IN RUSSIA, SAYING US 'WILLING TO HELP' "The one good thing, if I could say there's a good thing, is that it's a treatable, highly treatable bacterial disease with common antibiotics that most physicians within the United States can utilize," Schwartz said.

The illness is caused by the bacterium Yersinia pestis and is considered the most serious form of plague, according to the CDC. Symptoms can include fever, chest pain, coughing and rapidly developing pneumonia. Without prompt antibiotic treatment, the infection can be fatal, the agency warns.

The World Health Organization (WHO) has pressed Moscow for additional information about Shipilova's death.

Russian authorities placed approximately 200 people who had contact with the deceased laboratory worker under quarantine, according to Euronews. On Thursday, Irkutsk Gov. Igor Kobzev said preventive measures had been completed and roughly 5,000 laboratory tests had detected no pathogens, according to the Associated Press.

RUSSIAN RESEARCHER'S MYSTERY DEATH COULD BE ‘FAR WORSE’ THAN THE PLAGUE, FORMER SENIOR TRUMP OFFICIAL WARNS However, Russian officials have not publicly identified the pathogen responsible for Shipilova's pneumonia or definitively ruled out pneumonic plague as the cause of her death, according to The Associated Press.

Asked whether Moscow was being sufficiently transparent with American authorities, Schwartz indicated that the administration was still seeking answers.

"We are still having those conversations about what exactly happened in Siberia," she said, adding that U.S. officials were working with information about an unconfirmed case of pneumonic plague.