OMSK Hemorrhagic Fever
Signs and Symptoms
Where did OMSK originate ?
- First recognized in 1943 in the OMSK district in Siberia
- 1,344 reported cases occurred between 1946 and 2000.
How do we become infected?
- 3-8 days after incubation - Fever, chills, headache,sever muscle pain, vomiting, GI problems, low blood pressure.
- 3-4 days after incubation: low platelet/ RBC/ WBC count, and bleeding problems (nose bleeds, bleeding gums, vomiting blood, blood in lungs).
- In 1-2 weeks symptoms may go away but return the following week with high fever and encephalitis.
The reservoir of OHF is the tick or rodent that carry the Flavivirus.
Our source for flaviviris is coming into contact the an infected rodent or its bodily fluids or being bit by the tick.
What causes OHF?
Where is OHF most prevalent?
The flavivirus causes OHF. Specifically flavivirus OMSK Hemorrhagic Fever virus.
Genome?
It is most commonly found in these four Oblasts.
References
Treatment
Fun Facts
Who is at risk?
- Archecotech. (2013, June 19). So how many states are in Russia? Retrievedfrom https://hague6185.wordpress.com/2013/06/19/so-how-many-states-are-there-in-russia/comment-page-1/ (Links to an external site.)
- Flavivirus. (n.d.). Viralzone.Retrieved March 13, 2016, from http://viralzone.expasy.org/all_by_species/24.html
- Omsk Hemorrhagic fever. (2013). CDC. Retrieved March 14, 2016, from http://www.cdc.gov/vhf/omsk/index.html (Links to an external site.)
- OMSK Hemorrhagic fever virus. (2012). Public Health Agency of Canada. Retrieved March 14, 2016.
Prevention
Supportive treatment: keeping hydrated, treating symptoms, such as, Tylenol for headaches, blood transfusions, and clotting factors.
Mortality rate is 0.5% - 3%
Those who are outdoors such as hunters and campers where the ticks are most prevalent. Also people in Siberia who hunt muskrats.
- Recovery takes weeks but sequelae is not common
- Non-communicable
- most cases occur during hunting season (April- December)
- Flavivirus is inactivated by being heated to 50- 60 degrees Celsius for more than 30 minutes.
Wearing protective clothing
Using insect repellent
Currently there is no vaccine for the flavivirus.