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Thursday, March 27, 2014

Ebola - the stuff my dreams are made of!!

Next week marks my 11th year in the infection prevention world, however my interest in outbreak investigation started well before that.  I would say it all began as early as 1985 after watching the science fiction - horror film Warning Sign where there was an outbreak of a virulent bacteria in a secret military laboratory operating under the guise of a pesticide manufacturer.  Secret labs always run into bad luck do they not?  Ten years later, came Outbreak and the American medical disaster film with its Ebola-like virus called Motaba.  I was hooked.  It seems fitting that in 2003, almost 10 years after Outbreak debuted, I started in the industry during the first wave of SARS and now as I head into my 11th year, the virus that really got me interested in infection prevention is hitting the news.

In February, an outbreak of Ebola in Guinea began.  As of last week, there were at least 80 infections and 59 deaths. Hitting closer to home, there was speculation that a man who had taken ill in Saskatchewan after a recent trip to western Africa may have contracted Ebola on his travels. He has since been cleared, but it certainly sends a message that like SARS in 2003, worldwide travel has the potential to bring pathogens - often deadly ones - to geographical areas they are not native to.  

Ebola hemorrhagic fever with its often fatal outcome is by far one of the scariest  known human pathogens due to its fatality rate of approximately 83%.  Discovered in Zaire (now the Democratic Republic of the Congo) in 1976 there have now been 5 species of Ebolaviruses identified, with 4 of the 5 virus species causing illness to humans. Unfortunately, the reservoir host for Ebolaviruses has yet to be found.  Researchers believe the virus is zoonotic in nature and bats are the most likely culprit.

From a virology perspective, Ebola is an enveloped virus that can be transmitted via direct contact with blood or secretions of an infected person, and exposure to fomites that have been contaminated with infected secretions.  Symptoms may appear anywhere from 2 to 21 days after exposure to Ebolavirus, though 8-10 days is most common.  Symptoms characterizing Ebola are unspecific in the first few days of the infection, making the virus even more dangerous.  Infection is marked by initial signs of fever, fatigue, exhaustion, muscle aches, and dizziness. As the disease progresses bleeding under the skin, in internal organs, and from the eyes, ears, and mouth are seen. Patients with severe progressions of the disease express symptoms of shock, delirium, coma, seizures, and nervous system malfunction.

As highlighted by past outbreaks, Ebola can spread easily through household contacts (families and friends) because of close contact with infectious secretions while caring for the ill.  Likewise within healthcare settings the virus can spread rapidly, particularly if hospital staff are not wearing the appropriate PPE (masks, gowns and gloves). Cleaning and disinfection of fomites and medical equipment is an important part of minimizing transmission.

I have to chuckle, because as I write this blog, I am sitting in a plane on a trip back from Des Moines, Iowa via Chicago. The fact that worldwide travel (okay, North American for me) can be accomplished in a matter of days really hits home!  We just truly never know when an infected person, or contaminated food or object may be on its way to spread disease to unsuspecting populations!   Since my introduction to the idea of outbreaks almost 30 years ago, my interest has never waned.  I'm curious to learn what the next 10 years has in store!

Bugging Off!

Nicole

 

3 comments:

  1. Ebola is very serious threat to mankind. At the outset there is no cure for
    the virus right now. It is deadliest than the deadlier!!!!!!!

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  2. You seem actually excited about a possible pandemic. I would put your interest in Ebola on the back burner and start putting some priority on the mental illness you obviously suffer from. People are dying tragic gruesome deaths. Have some compassion, or at least some respect. Something is wrong with you.

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  3. Thank you both for your comments. As with all of the Talk Clean To Me blogs, the intent is to educate with the hopes that a dialogue is started. While the title of the blog may elicit varied reactions, the blog itself is a story of how I became interested in Infection Prevention, contains educational information about Ebola and summarizes with the fact that because of air travel the unfortunate truth is that diseases such as SARS, MERS, Ebola etc, can potentially be carried from one country to the next. Both Canada and the US have certainly has several suspect cases of Ebola which clearly highlights the need for education about the virus itself and what infection prevention measures healthcare facilities need to put in place to minimize risk of transmission to other patients. Thanks for reading! Nicole

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