Suppose there exists a portable test for ebola that is used

Suppose there exists a portable test for ebola that is used at airports. Also suppose this test has a 100% sensitivity and a 99% specificity. Assume that 0.1% of the people coming through the airport have Ebola (the actual percentage of people with ebola is much smaller.) What is the positive predictive value of this test? (Is this an effective way to control Ebola?)

100 / 100 = 1

1 / 0.001 = 1000