New York is taking a strengthened monitoring effort against the Ebola disease entering its borders, New York Times reported.

The John F. Kennedy International Airport is instituting the new system on Saturday and focuses on passengers coming from Liberia, Sierra Leone and Guinea, which are mostly affected by the Ebola outbreak.

New York Times quoted U.S. Customs of Border Protection Commissioner R. Gil Kerlikowski as telling reporters during the press conference Saturday, "Officers look for overt signs of illness and can obtain additional information from the travelers during the inspection interview. If a traveler is identified with overt signs of a communicable disease of public health significance, the traveler is isolated from the traveling public and referred to CDC's Regional Quarantine Officers or local public health for medical evaluation."

Earlier, the United Nations said that the deaths from Ebola virus have reached over 4,000.

Aboulaye Mar Dieye who leads up the United Nations Development Program's operations in Africa told Voice of America that the disease can be stopped but there is a need to strengthen global efforts to address the virus.

Dieye in an interview with Voice of America Friday was quoted as saying," It's difficult but the plan we have is we have to deal with in the next two, three months. Because if we don't, this is the prediction of the CDC Center of Disease Control in the US is saying. If we don't by January these numbers can hit 500,000 infected. Now are about 8,000. And that can be a trigger point to catastrophe. That's why for me it's the scenario that we cannot contemplate. It behooves us all international community to stop it. It is stoppable, we just have to step up the means."

The U.S. Customs will also implement the same procedure at the Chicago O'Hare International Airport, Dulles, International Airport, Hartsfield-Jackson Atlanta International Airport and Newark International Airport.

The first person in the United States who had the virus, Thomas Eric Duncan died in a hospital in Texas.