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I just saw in the news, The epidemic deadly airborne disease Ebola has started killing people once again in Africa. Aircraft to and from the EU, the US and the rest of world fly over this deadly zone on a daily basis. People driving in ANY Tesla Vehicle or the US presidents car enjoy breathing purified sterile air free of any bacteria, viruses, fungi or any disease causing micro organisms, because all the air entering the car if windows are closed is purified by a UV light purifier.
Is aircraft bleed air for pressurizing the fuselage purified and if so, what technology is used e.g UV light. If not are there any plans for one such process and would it drain more fuel if implemented.
Finally do such viruses pose a danger to aircraft fly over an affected country's airspace?