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In Ebola outbreak, bad data adds another problem

People carry food aid from a British Navy helicopter after it made a food drop on Sherbro Island, Sierra Leone, Sunday, Dec. 7, 2014. The WFP, World Food Program and British Military took part in a three day food distribution effort to local residents on the remote Sherbro Island,  where the amount of sick people due to the Ebola virus have prevented people from farming, fishing or gathering there own food. (AP Photo/Michael Duff)
People carry food aid from a British Navy helicopter after it made a food drop on Sherbro Island, Sierra Leone, Sunday, Dec. 7, 2014. The WFP, World Food Program and British Military took part in a three day food distribution effort to local residents on the remote Sherbro Island, where the amount of sick people due to the Ebola virus have prevented people from farming, fishing or gathering there own food. (AP Photo/Michael Duff) People carry food aid from a British Navy helicopter after it made a food drop on Sherbro Island, Sierra Leone, Sunday, Dec. 7, 2014. The WFP, World Food Program and British Military took part in a three day food distribution effort to local residents on the remote Sherbro Island, where the amount of sick people due to the Ebola virus have prevented people from farming, fishing or gathering there own food. (AP Photo/Michael Duff)

LONDON (AP) – As health officials struggle to contain the world’s biggest-ever Ebola outbreak, their efforts are being complicated by another problem: bad data.

Having accurate numbers about an outbreak is essential not only to provide a realistic picture of the epidemic, but to determine effective control strategies. Dr. Bruce Aylward, who is leading the World Health Organization’s Ebola response, said it’s crucial to track every single Ebola patient in West Africa to stop the outbreak and that serious gaps remain in their data.

“As we move into the stage of hunting down the virus instead of just slowing the exponential growth, having good data is going to be at the heart of this,” Aylward said. “We are not there yet and this is something we definitely need to fix.”

“Decisions about prevention and treatment should be data-driven, but we really don’t have the data,” agreed Irwin Redlener, director of the National Center for Disaster Preparedness at Columbia University.

A week ago, the World Health Organization insisted at a media briefing it had mostly met targets to isolate 70 percent of Ebola patients and bury 70 percent of victims safely in Guinea, Liberia and Sierra Leone. But two days later, WHO backtracked and said that data inconsistencies meant they really didn’t know how many patients were being isolated. Then the U.N. health agency also conceded that many of the safe burials were of people not actually killed by Ebola.