It is unclear whether the cause of the syndrome is viral or bacterial – a distinction with implications for treatment – although autopsies have indicated that those who died were suffering from other complications, such as Chikungunya.Venezuelan hemorrhagic fever (VHF) is endemic in the two states of Portuguesa and Barinas, but transmission from person-to-person is uncommon.While samples have been sent to the Venezuelan National Institute of Health, the results have not yet been released publically and there is no suggestion from health officials that VHF is behind this particular outbreak.One doctor, who wishes to remain anonymous, attended a meeting last...