The researchers had a theory. They thought that people who were bitten by infected mosquitoes, but recovered, were protected in the future.

VOA: special.2009.01.27

"That is why I am talking publicly, clearly,frankly that this resolution taken by the press syndicate in the early 80s should now be revised, to be re-thought for the interest of Egypt, for the interest of the peace, for the interest of the future of the young generations, of the coming generations,".

VOA: standard.2009.10.08