US customs and health officials have begun taking the temperatures of passengers arriving at New York’s Kennedy International Airport from three West African countries in a stepped-up screening effort meant to prevent the spread of the Ebola virus.

The man quarantined with a dangerous strain of tuberculosis is likely to spend up to two months in a US hospital while he receives a battery of antibiotics and is evaluated for possible surgery, his doctors said.

The American Government was warned eight years ago that the Pentagon and White House were vulnerable to attack from hijacked jets, a military adviser has claimed.