While the government and Kurdish media reported that the symptoms were similar to those of Ebola, the WHO has not been able to confirm the same and has offered to help.

Iraq's official pro-government newspaper, al Sabaah, said Ebola arrived in Mosul from terrorists who came from several countries and Africa, reports Mashable.

Cases with malaria, Lassa fever, yellow fever viruses and the Marburg virus could be confused with Ebola as the symptoms that include fever, nausea and vomiting, diarrhoea, bleeding and bruising are similar.

It is also uncertain if any IS recruits came from Ebola-hit regions of West Africa. Most have come from Tunisia, Morocco, Libya, Egypt, Algeria, Sudan and Somalia, according to reports.

The group that doesn't believe in science and modern medicine executed many doctors in Mosul recently and prohibited UN workers from entering the territory.

“We have no official notification from the Iraqi government that it is Ebola,” Christy Feig, WHO’s director of communications told Mashable.

The first reported case in the Ebola outbreak ravaging west Africa dates back to December 2013, in Guéckédou, a forested area of Guinea near the border with Liberia and Sierra Leone.

Untill end of 2014, 20,206 cases and 7,905 deaths had been reported worldwide, the vast majority of them in these same three countries.