Thursday, October 30, 2014

Could Ebola Be Transmitted by Fleas, Ticks, or Mosquitoes?



Could Ebola Be Transmitted by Fleas, Ticks, or Mosquitoes?

Texas Health Presbyterian Hospital who provided care for the Ebola patient who died there last week has tested positive for the deadly virus, authorities said Sunday… Dan Varga, chief clinical officer for the hospital group that includes Texas Health Presbyterian, said the health care worker had worn full protective gear when working with Thomas Eric Duncan, who died Wednesday.” – USA Today

So I have to wonder… Could Ebola be transmitted by fleas, ticks, or mosquitoes?  After all a flea could theoretically find its way through full protective gear, and it was fleas on the backs of black rats that spread the Black Death – or so the story goes.

While the CDC does recommend that travelers avoid bug bites, I’ve not found any reports by the CDC that says that the spread of the current Ebola outbreak could be linked to insects.   However, if and when they did answer the question, I would not take their answer as gospel truth.  They have been wrong a lot lately. 

I did find this, for what it's worth.

Viral hemorrhagic fevers are perhaps the most feared and least understood of the emerging infectious diseases.  Hemorrhagic fevers are divided into four main families: arenavirus, bunyaviridae, filovirus and flavivirus. Their symptoms consistently begin in humans as a headache, acute infection and fever, progressing to increased leakage of blood and fluids within the body. Finally, the progression of the disease leads to tissue degeneration and massive hemorrhaging from body orifices, most often leading to death.
Species of undomesticated (wild) animals are the primary reservoirs for most or all of the hemorrhagic viruses. Sometimes intermediate vectors, such mosquitos, fleas or ticks, may transmit the virus to humans. Transmission also may occur, however, through human contact with the raw flesh or body fluids of infected animals or humans, creating exceptional difficulties for family members and health workers who have to live with or deal with an infected person.
Among the viral hemorrhagic fevers, the filoviruses have aroused the most interest and concern. Since the discovery of Marburg virus in a German monkey house in 1967, officials have documented numerous outbreaks of Marburg and its close relative Ebola.
Mortality rates for Marburg and Ebola viruses are astoundingly high at 70 percent. In the past, Marburg outbreaks have occurred in Germany, Zimbabwe and Kenya. In recent years, however, outbreaks of Ebola have been more prevalent than close relative Marburg, but these viruses are unpredictable.





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