Health officials cautioned against prematurely assuming that funneling potential hemorrhagic fever carriers into a crowded transit hub will result in localized infections.
The Department of Homeland Security announced Tuesday that flights carrying passengers from Ebola outbreak zones will be redirected exclusively to Washington Dulles International Airport. However, researchers immediately pushed back against the layperson assumption that concentrating potential carriers in a major mid-Atlantic transit hub will definitively result in transmission, citing a lack of peer-reviewed literature on the subject.
While preliminary modeling suggests placing individuals potentially harboring a highly fatal hemorrhagic fever into a poorly ventilated customs queue could be linked to an increased risk of infection, medical professionals stress the importance of remembering the difference between correlation and causation.
We cannot conflate the arrival of a passenger actively hemorrhaging from their mucous membranes with a guaranteed outbreak. Until we conduct a double-blind, randomized control trial, it is entirely possible they are merely experiencing severe seasonal allergies that present identically to end-stage viral organ failure.
Furthermore, experts note that the DHS screening protocol has not yet been evaluated for statistical significance. Public health analysts point out that environmental factors, such as the recycled cabin air on a 14-hour international flight, could serve as a confounding variable, making it difficult to isolate whether a customs officer contracted the virus from an exposed traveler or from an unrelated baseline exposure to hemorrhagic fever in the greater Washington metropolitan area.
Until more longitudinal data is collected on whether funneling exposed individuals into crowded baggage claims leads to statistically significant fatalities, authorities recommend that travelers maintain a healthy skepticism regarding the virus's presence and continue treating the outbreak as a theoretical model.