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West Nile Virus

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Sabrina Le

on 12 October 2017

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Transcript of West Nile Virus

It was first IDENTIFIED in 1937 in Uganda in Eastern Africa.
BUT it was first DISCOVERED in the United States of America in the summer of 1999 in New York.
West Nile virus
The virus was common in areas such as Africa, Eastern Europe, West Asia, and the middle East.
When was the West Nile Virus first discovered?
Firstly, the West Nile Virus has mild symptoms such as:
Signs And Symptoms
Characteristics are:
Characteristics of the West Nile Virus
How is the West Nile Virus transmitted?
Canada, Public Health Agency. "Symptoms Of West Nile Virus" Canada.ca. June 26, 2015. Date accessed Sunday. October 1, 2017. Www.Canada.ca/en/public-health/services/diseases.html.

"West Nile Virus Fast Facts". CNN, Cable News Network, May 4 2017. Date accessed Sunday. October 1, 2017. Www.cnn.com/west-nile-virus/index.html.
West Nile Virus
Effect of the Disease upon Society
Additional Information
How the West Nile Virus can be treated?
The scientific name of this virus is called Flavivrus and the common name is the West Nile Virus.
Body aches
Rashes &
Swollen lymph glands
Serious symptoms may also occur such as:
If there was no help for the West Nile Virus, things would be very difficult. Our society would struggle and it could kill millions of people. Mosquitoes are hard to see at night. As a result, about 134 people in Canada and America died from the West Nile. A research team from Centers for Disease Control And Prevention reported that in the 14 years since the virus was first detected, hospitalized cases of the West Nile have cost $778 million in health care expenses. Also, the virus can spread to horses. This will affect farmers because horses help them around the farm by pulling plows to plow fields and as a source of transportation.
-About 70-80% of infected people don't show any symptoms when they have the virus
-Severe disease is mostly present in individuals over 50 years old or with weak immune systems
-Vaccines are available for horses, but not yet available for people.
-Birds are the natural hosts of the WNV.
High fever
Stiff Neck
Muscle weakness
Drowsiness &
Difficulty swallowing
The West Nile Virus is transmitted to humans and animals by the bite of an infected mosquito. Mosquitoes become infected when they feed on infected birds. Majority of human infections are caused by the bites of the infected mosquito. It can also be transferred by contact with other infected animals, their blood and/or tissues.
In small number of cases, the virus can be transmitted through blood transfusions, and organ transplants. Also, from mother to baby, during pregnancy, delivery, or breastfeeding.
It is unsure where the American and Canadian virus originated , but they THINK it came from parts of the middle east.
It was documented in the Western hemisphere in 1999.
954 human cases of the West Nile Virus in 2002 in United States, mostly Illinois, Louisana, Michigam, and Mississipi.
In Ontario, Manitoba, Saskatchewan and Quebec there were infected birds.
People with mild symptoms usually recover on their own, but other symptoms can last for several weeks.
How can the West Nile Virus be prevented?
WNV can be prevented by using insect repellent and wearing protective clothing(with permethrin-do not use directly on skin). When using insect repellent, always follow the directions, reapply if needed, and do not spray on skin under clothing(if using sunscreen, apply that first then the repellent after).
Protect babies and children by dressing with clothes that covers arms and legs. Also, use mosquito netting to cover cribs, strollers, and baby carriers.
You can control mosquitos inside and outside your home by repair any holes or cracks, use air conditioning when avalible, sleep with mosquito netting(if AC is not avalible etc.) And once a week,check inside and outside your home for items that hold water and empty,scrub,cover, or throw out the items because mosquitos lay eggs near water.
the WNV is a single strand Rna genome virus approximately 11 kb that is naturally carried and most likely by hosts of mosquitos
the virus is a member of the Flavivirus genus and belongs to the Japanese encephalitis antigenic complex of the family Flaviviridae.
Patients who have had a organ transplant etc. go through the lytic cycle of replication
There is is no vaccine or medication available yet to treat WNV.
-counter pain relievers can used to reduce some symptoms such as fever. Only in severe cases, patients need to be hospitalized to receive supportive treatment like: nursing care, pain medication, and intravenous fluids.
How can the West Nile Virus be prevented?(cont.)
by: Reanne, ann, & sabrina
Full transcript