India, May 21 -- Delhi's Indira Gandhi International Airport (IGI) on Thursday issued an advisory over Ebola virus, asking sick passengers from or transiting through affected countries to "immediately" report to airport's health official.

This comes a day after Union health secretary held a high-level review meeting with the states on Wednesday to assess preparedness and response measures regarding the Ebola Virus Disease (EVD).

The Delhi airport listed Congo, Uganda and South Sudan as "high-risk" countries, asking sick passengers coming from and transiting through these to take immediate action.

So far, 51 cases have been confirmed in the Democratic Republic of Congo (DRC), although WHO said it was aware that the scale of the epidemic...