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Avian Flu Outbreaks in North America

Updated: Monday, April 24, 2017 1:54 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).

Iran reports H5N1 bird flu outbreak in northern part of country: OIE - Reuters
24 Apr 2017 at 5:38am
Iran reports H5N1 bird flu outbreak in northern part of country: OIE - Reuters
24 Apr 2017 at 5:38am
Avian flu restrictions at wildlife park gave the birds another type of fever....
24 Apr 2017 at 2:30am
Avian flu restrictions at wildlife park gave the birds another type of fever....
24 Apr 2017 at 2:30am
As Bird Flu Strengthens In China, Midwest Farmers Prepare For The ... - KCUR
24 Apr 2017 at 1:21am
As Bird Flu Strengthens In China, Midwest Farmers Prepare For The ... - KCUR
24 Apr 2017 at 1:21am
Congress, WHO sound the alarm over pandemic bird flu or avian flu ... - Washi...
21 Apr 2017 at 8:07am
Congress, WHO sound the alarm over pandemic bird flu or avian flu ... - Washi...
21 Apr 2017 at 8:07am
No more bird-flu risk in Netherlands; poultry allowed outside again - NL Times
20 Apr 2017 at 8:36am
No more bird-flu risk in Netherlands; poultry allowed outside again - NL Times
20 Apr 2017 at 8:36am
Georgia ends bird flu restrictions for producers - Atlanta Journal Constitution
19 Apr 2017 at 2:28pm
Georgia ends bird flu restrictions for producers - Atlanta Journal Constitution
19 Apr 2017 at 2:28pm
South Korea to keep importing eggs despite bird flu downgrade - WHTC
19 Apr 2017 at 12:18am
South Korea to keep importing eggs despite bird flu downgrade - WHTC
19 Apr 2017 at 12:18am
South Korea to downgrade bird flu alert status from highest level - Reuters
17 Apr 2017 at 10:45pm
South Korea to downgrade bird flu alert status from highest level - Reuters
17 Apr 2017 at 10:45pm
Bird flu redirects trade of U.S. goods - Toledo Blade
17 Apr 2017 at 9:03pm
Bird flu redirects trade of U.S. goods - Toledo Blade
17 Apr 2017 at 9:03pm
Bird flu measures could be lifted this week - Jersey Evening Post
17 Apr 2017 at 1:56am
Bird flu measures could be lifted this week - Jersey Evening Post
17 Apr 2017 at 1:56am
Welcome Easter present for East Anglian free range egg producers hit by restr...
15 Apr 2017 at 10:10pm
Welcome Easter present for East Anglian free range egg producers hit by restr...
15 Apr 2017 at 10:10pm
Free-range egg producer welcomes lifting of bird flu restrictions in time for...
14 Apr 2017 at 2:03am
Free-range egg producer welcomes lifting of bird flu restrictions in time for...
14 Apr 2017 at 2:03am
Outdoor return for hens as bird flu fears fade - BBC News
13 Apr 2017 at 4:08pm
Outdoor return for hens as bird flu fears fade - BBC News
13 Apr 2017 at 4:08pm
Spread of bird flu checked in Alabama, so far - Montgomery Advertiser
13 Apr 2017 at 1:17pm
Spread of bird flu checked in Alabama, so far - Montgomery Advertiser
13 Apr 2017 at 1:17pm
Bird flu: What is it, exactly? - Agri News
13 Apr 2017 at 12:10pm
Bird flu: What is it, exactly? - Agri News
13 Apr 2017 at 12:10pm
Wyre farmer says her hens are 'scared stiff' after bird flu captivity - Lanca...
13 Apr 2017 at 6:39am
Wyre farmer says her hens are 'scared stiff' after bird flu captivity - Lanca...
13 Apr 2017 at 6:39am
Virulent bird flu strain threatens to spill out of China - SciDev.Net
13 Apr 2017 at 5:36am
Virulent bird flu strain threatens to spill out of China - SciDev.Net
13 Apr 2017 at 5:36am
State Vet: Bird flu in Middle TN did not spread - WBIR-TV
12 Apr 2017 at 5:21pm
State Vet: Bird flu in Middle TN did not spread - WBIR-TV
12 Apr 2017 at 5:21pm
China's H7N9 bird flu death toll at 47 in March: government data - Reuters
11 Apr 2017 at 11:41pm
China's H7N9 bird flu death toll at 47 in March: government data - Reuters
11 Apr 2017 at 11:41pm
NEWSFLASH: Bird Flu restrictions lifted for Melton poultry owners - Melton Times
11 Apr 2017 at 9:58am
NEWSFLASH: Bird Flu restrictions lifted for Melton poultry owners - Melton Times
11 Apr 2017 at 9:58am