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Avian Flu Outbreaks in North America

Updated: Friday, October 20, 2017 1:35 AM 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).

The next wave of bird flu could be worse than ever - Science News
19 Oct 2017 at 11:37am
The next wave of bird flu could be worse than ever - Science News
19 Oct 2017 at 11:37am
Western Cape counts the cost of drought and bird flu - Farmer's Weekly
19 Oct 2017 at 7:41am
Western Cape counts the cost of drought and bird flu - Farmer's Weekly
19 Oct 2017 at 7:41am
Bird flu: higher egg prices and shortages loom - Kempton Express
18 Oct 2017 at 9:17pm
Bird flu: higher egg prices and shortages loom - Kempton Express
18 Oct 2017 at 9:17pm
Reps want N1.8bn compensation for bird flu victims - Daily Trust
18 Oct 2017 at 6:03pm
Reps want N1.8bn compensation for bird flu victims - Daily Trust
18 Oct 2017 at 6:03pm
Dutch bird flu outbreak leads to trade bans - Poultry World
18 Oct 2017 at 4:14am
Dutch bird flu outbreak leads to trade bans - Poultry World
18 Oct 2017 at 4:14am
[LISTEN] Eggs shortage to worsen amid bird flu outbreak - Eyewitness News
17 Oct 2017 at 10:41pm
[LISTEN] Eggs shortage to worsen amid bird flu outbreak - Eyewitness News
17 Oct 2017 at 10:41pm
No decision yet on bird flu vaccination - Zokwana - Fin24
17 Oct 2017 at 10:35pm
No decision yet on bird flu vaccination - Zokwana - Fin24
17 Oct 2017 at 10:35pm
Widespread bird flu, drought affect W Cape farmers - eNCA (blog)
17 Oct 2017 at 8:45pm
Widespread bird flu, drought affect W Cape farmers - eNCA (blog)
17 Oct 2017 at 8:45pm
South Korean egg prices back down after bird flu spike - Nikkei Asian Review
17 Oct 2017 at 6:11pm
South Korean egg prices back down after bird flu spike - Nikkei Asian Review
17 Oct 2017 at 6:11pm
China confirms bird flu outbreak at poultry farms in central province - Nasdaq
17 Oct 2017 at 3:39am
China confirms bird flu outbreak at poultry farms in central province - Nasdaq
17 Oct 2017 at 3:39am
Farmers voice concerns about compensation for bird flu - Poultry World
16 Oct 2017 at 5:31am
Farmers voice concerns about compensation for bird flu - Poultry World
16 Oct 2017 at 5:31am
Poultry sector close to full recovery from bird flu - Philippine Star
15 Oct 2017 at 9:31am
Poultry sector close to full recovery from bird flu - Philippine Star
15 Oct 2017 at 9:31am
New bird flu text alert service in NI - Irish Farmers Journal
15 Oct 2017 at 7:16am
New bird flu text alert service in NI - Irish Farmers Journal
15 Oct 2017 at 7:16am
New bird flu case in Netherlands; 42000 egg-laying hens culled - NL Times
13 Oct 2017 at 6:10am
New bird flu case in Netherlands; 42000 egg-laying hens culled - NL Times
13 Oct 2017 at 6:10am
WC govt, DAFF working to find solutions to bird flu outbreak - Eyewitness News
13 Oct 2017 at 12:21am
WC govt, DAFF working to find solutions to bird flu outbreak - Eyewitness News
13 Oct 2017 at 12:21am
Bird flu cases in WC increases to 50 - Eyewitness News
12 Oct 2017 at 9:52am
Bird flu cases in WC increases to 50 - Eyewitness News
12 Oct 2017 at 9:52am
Zambia has not recorded any cases of bird flu-Katambo - Lusaka Times
12 Oct 2017 at 9:18am
Zambia has not recorded any cases of bird flu-Katambo - Lusaka Times
12 Oct 2017 at 9:18am
Producers to boost biosecurity measures after bird flu outbreak - Fin24
12 Oct 2017 at 7:40am
Producers to boost biosecurity measures after bird flu outbreak - Fin24
12 Oct 2017 at 7:40am
Some WC retailers running out of eggs due to bird flu - Eyewitness News
11 Oct 2017 at 11:10am
Some WC retailers running out of eggs due to bird flu - Eyewitness News
11 Oct 2017 at 11:10am
'Devastating' bird flu culling to cost Gauteng farm R65m - Fin24
11 Oct 2017 at 1:46am
'Devastating' bird flu culling to cost Gauteng farm R65m - Fin24
11 Oct 2017 at 1:46am