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Avian Flu Outbreaks in North America

Updated: Saturday, February 23, 2019 12:06 PM EDT
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Avian Flu Outbreaks in North America

Recent North American Outbreaks of Avian Influenza with Transmission to Humans

H7N3 in Canada – 2004

On February 19, 2004 , the Canadian Food Inspection Agency announced an outbreak of avian influenza A (H7N3) in poultry in the Fraser Valley region of British Columbia . Culling operations and other measures were performed in an effort to control the spread of the virus. Health Canada reported two cases of laboratory-confirmed influenza A (H7): one in a person involved in culling operations on March 13-14, and the other in a poultry worker who had close contact with poultry on March 22-23. Both patients developed conjunctivitis (eye infection) and other flu-like symptoms. Their illnesses resolved after treatment with the antiviral medication oseltamivir.

Although these are the only laboratory-confirmed cases of avian influenza A (H7) in humans during this outbreak in Canada , approximately 10 other poultry workers exhibited conjunctival and/or upper respiratory symptoms after having contact with poultry. Use of personal protective equipment is mandatory for all persons involved in culling activities, and compliance with prescribed safety measures is monitored. Epidemiologic, laboratory, and clinical evaluation is ongoing, as is surveillance for signs of avian influenza in exposed persons. There is currently no evidence of person-to-person transmission of avian influenza from this outbreak.

H7N2 in New York – 2003

In November 2003, a patient with serious underlying medical conditions was admitted to a hospital in New York with respiratory symptoms. One of the initial laboratory tests identified an influenza A virus that was thought to be H1N1. The patient recovered and went home after a few weeks. Subsequent confirmatory tests conducted in March showed that the patient had been infected with an H7N2 avian influenza A virus.

Recent Outbreaks among Poultry in the United States with No Transmission to Humans

H5N2 in Texas – 2004

In February 2004, an outbreak of highly pathogenic avian influenza (HPAI) A (H5N2) was detected and reported in a flock of 7,000 chickens in south-central Texas . This was the first outbreak of HPAI in the United States in 20 years.

H7N2 in Delaware, New Jersey, and Maryland – 2004

In February 2004, an outbreak of low pathogenic avian influena (LPAI) A (H7N2) was reported on 2 chicken farms in Delaware and in four live bird markets in New Jersey supplied by the farms. In March 2004, surveillance samples from a flock of chickens in Maryland tested positive for LPAI H7N2. It is likely that this was the same strain.

This article is based on information gathered at the CDC (Center For Disease Control).

China reports new bird flu outbreak in Yunnan province - Reuters
22 Feb 2019 at 2:34am
China reports new bird flu outbreak in Yunnan province - Reuters
22 Feb 2019 at 2:34am
Bird flu: NIA urges farmers to seek insurance cover - The Punch
21 Feb 2019 at 6:00pm
Bird flu: NIA urges farmers to seek insurance cover - The Punch
21 Feb 2019 at 6:00pm
FG warns farmers against vaccination of birds with flu - The Eagle Online
21 Feb 2019 at 9:48am
FG warns farmers against vaccination of birds with flu - The Eagle Online
21 Feb 2019 at 9:48am
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21 Feb 2019 at 5:37am
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20 Feb 2019 at 3:13pm
No bird flu cases detected - Kuwait Times
20 Feb 2019 at 3:13pm
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20 Feb 2019 at 4:23am
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'Killer cells' could lead to one-time flu vaccine - Futurity: Research News
19 Feb 2019 at 11:45am
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19 Feb 2019 at 11:45am
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19 Feb 2019 at 10:16am
Bird flu hits Plateau, 3900 birds dead - Premium Times
19 Feb 2019 at 10:16am
Bird flu in penguins brought under control - New Era Live
19 Feb 2019 at 12:59am
Bird flu in penguins brought under control - New Era Live
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Bird flu outbreak confirmed in western Taiwan... - Taiwan News
18 Feb 2019 at 8:58pm
Bird flu outbreak confirmed in western Taiwan... - Taiwan News
18 Feb 2019 at 8:58pm
Biologists are trying to make bird flu easier to spread. Can we not? - Vox.com
17 Feb 2019 at 9:00am
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17 Feb 2019 at 9:00am
Bird flu kills 250 penguins on Halifax Island - New Era Live
15 Feb 2019 at 2:57am
Bird flu kills 250 penguins on Halifax Island - New Era Live
15 Feb 2019 at 2:57am
Plan seeks to minimise social, economic impact of bird flu - Viet Nam News
15 Feb 2019 at 1:00am
Plan seeks to minimise social, economic impact of bird flu - Viet Nam News
15 Feb 2019 at 1:00am
Vietnam rolls out plan to prevent, ontrol bird flu for 2019-2025 - Xinhua | E...
14 Feb 2019 at 8:33am
Vietnam rolls out plan to prevent, ontrol bird flu for 2019-2025 - Xinhua | E...
14 Feb 2019 at 8:33am
Morning Break: Where's the Bird Flu? Bugs as Medicine; NYC Nurses Take to Str...
14 Feb 2019 at 7:33am
Morning Break: Where's the Bird Flu? Bugs as Medicine; NYC Nurses Take to Str...
14 Feb 2019 at 7:33am
Namibian government on alert amid bird flu outbreak - African Daily Voice
14 Feb 2019 at 1:00am
Namibian government on alert amid bird flu outbreak - African Daily Voice
14 Feb 2019 at 1:00am
China makes keeping tabs on bird flu difficult - Arizona State University
13 Feb 2019 at 2:23pm
China makes keeping tabs on bird flu difficult - Arizona State University
13 Feb 2019 at 2:23pm
Former CDC leader on bird flu threat: 'We don't know how the story's going to...
13 Feb 2019 at 12:05pm
Former CDC leader on bird flu threat: 'We don't know how the story's going to...
13 Feb 2019 at 12:05pm
What happened to bird flu? How a threat to human health faded from view - STAT
13 Feb 2019 at 1:00am
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13 Feb 2019 at 1:00am
Bird flu shuffle probes viral compatibility - EurekAlert
12 Feb 2019 at 1:11pm
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12 Feb 2019 at 1:11pm