Re: CDC Chief: Banning Flights from Ebola-Ridden African Nations Will Cause More Americans to Get Ebola
Re: CDC Chief: Banning Flights from Ebola-Ridden African Nations Will Cause More Americans to Get Ebola
A Ban On Air Travel From Ebola-Stricken Countries Would Backfire, Experts Say
By Ismat Sarah Mangla
http://www.ibtimes.com/ban-air-travel-ebola-stricken-countries-would-backfire-experts-say-1699307
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“The widespread opinion among public health officials is that cutting off flights is not a good idea at all,” said Dirk Brockmann, who studies epidemiological modeling of infectious diseases at the Robert Koch Institute in Berlin.
“If you start cutting off flights from these countries, people will just go somewhere else to find ways out, and the situation will become even more unpredictable. The only way this outbreak can be solved is for us to go there and help contain it. We need transportation to these countries," he said.
Because Ebola is not airborne and can be transmitted only by direct contact with body fluids of a person who is sick and exhibiting symptoms of the disease, most experts agree that the risk of transmission on airplanes is low.
Passengers departing from airports in West Africa must undergo several screening protocols, including testing them for signs of fever, an early indicator of the disease. In September, around a dozen people were prevented from boarding planes in West Africa because they had a fever, reports the CDC. Most of them did not have Ebola, but transit authorities have been trained to be extra cautious.
But Duncan was not exhibiting any signs of the disease when he left Liberia on Sept. 19, says the CDC. Mark Gendreau, an emergency physician who specializes in aviation medicine, said that Ebola is only contagious once a person is exhibiting active symptoms. Duncan could not have spread the disease to fellow passengers at that time. As such, the CDC was not tracking passengers who were on the same flights as Duncan. United Airlines, which carried Duncan on two legs of his flight, is voluntarily contacting fellow passengers anyway.
Most experts who create mathematical models to study the way diseases like Ebola travel around the world agree it was a matter of time before an asymptomatic passenger carrying the disease would board a flight and carry the virus to another part of the world.
“This is something we were expecting to occur. The fact that we have had one importation is not that surprising,” said Gerardo Chowell-Puente, associate professor of mathematical epidemiology at Arizona State University. “The odds for the U.S. were low, but higher for other countries closer to the affected ones.”
Allesandro Vespignani, a Northwestern University professor who runs a model projecting Ebola’s spread, told the Washington Post on Sept. 24 -- just one day before Duncan first sought treatment at a Dallas hospital -- that there was a 10 percent chance of the disease getting imported to the U.S. within the next week.
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