Airplanes have all recirculated air that he was breathing, maybe sneezing and coughing in and not saying a word...
The air is not recirculated in the sense that what is in the plane stays in the plane. It is constantly refreshed and changes completely in about a minute. The air from the compression stages of the engines is run thru heat exchanging and filtering elements before it is infused into the aircraft thus pressurising it. At the same time air is exhausted into the atmosphere thru a valve/door to maintain the desired cabin altitude. Next time you have a chance look at the outside near the tail of your airplane around the rear doors and you will see a large opening about the size of an aircraft window partially closed by a door. That is the door that when closed allows the a/c to pressurize. In flight it modulates, ever so slightly to keep the cabin altitude steady.If there were to be a rapid depressurization that door would slam shut in an attempt to stop the pressure loss. Outside air, heated and cooled constantly moves through the cabin. It is not a closed system.
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Stopping the Ebola Outbreak Infographic
West Africa Ebola Outbreak (Infographic) [PDF - 1 page]
Fact about Ebola Virus infographic
Facts About Ebola (Infographic) [PDF - 1 page]
Because the natural reservoir host of Ebola viruses has not yet been identified, the manner in which the virus first appears in a human at the start of an outbreak is unknown. However, researchers believe that the first patient becomes infected through contact with an infected animal.
When an infection does occur in humans, the virus can be spread in several ways to others. Ebola is spread through direct contact (through broken skin or mucous membranes) with
blood or body fluids (including but not limited to urine, saliva, feces, vomit, and semen) of a person who is sick with Ebola
objects (like needles and syringes) that have been contaminated with the virus
infected animals
Ebola is not spread through the air or by water, or in general, food. However, in Africa, Ebola may be spread as a result of handling bushmeat (wild animals hunted for food) and contact with infected bats.
http://www.cdc.gov/vhf/ebola/transmission/