Mexico slaughters 1.2 million chickens infected with bird flu
February 28, 2013 -- Updated 1655 GMT (0055 HKT)
Bird flu has been discovered in 18 farms in the central Mexican state of Guanajuato, Mexico's Agriculture Ministry said.
- Investigators have found chickens infected with H7N3 on 18 farms in central Mexico
- Authorities say the outbreak has been controlled and does not pose a threat to humans
- More than 1.2 million infected chickens were slaughtered, a state agriculture official says
- Nearly 2 million chickens have been vaccinated against the virus since the outbreak began
(CNN) -- Mexican authorities say they've slaughtered more than a million chickens infected with bird flu.
Investigators detected the virus in 18 farms in the central Mexican state of Guanajuato, Mexico's Agriculture Ministry said this week.
Chickens there were infected with the H7N3 virus, which Mexican authorities said does not pose a threat to humans.
"This virus is exclusive to birds, so there is no risk for public safety," the Agriculture Ministry said earlier this month.
Authorities offered different tallies of how many infected birds had been slaughtered.
Agriculture Minister Enrique Martinez said Monday that more than 2.1 million chickens had been killed -- including 519,000 egg-producing chickens, 722,265 breeding chickens and 900,000 chickens raised for meat.
On Tuesday, Javier Usabiaga Arroyo, a state agriculture official, said the total number of infected chickens killed was about 1.2 million, Mexico's state-run Notimex news agency reported.
Officials have vaccinated 1.9 million birds since the outbreak began earlier this month, and they plan to vaccinate millions more, the Agriculture Ministry said in a statement this week.
The outbreak has sparked concern about a possible spike in food prices, but authorities said Monday that the number of slaughtered chickens is a small fraction of the country's overall population and there is no reason for egg or chicken prices to increase.
"The outbreak of avian influenza is controlled," Mexico's food safety agency said in a statement.
Other strains of bird flu have spread to humans and prompted authorities to slaughter animals.
In 1997, authorities in Hong Kong killed about 1.5 million chickens after H5N1 avian influenza passed from birds to humans there.
Last year a new strain of H3N8 flu jumped from birds to mammals and was responsible for the death of more than 160 seals off the New England coast.
Cambodia sees spike in bird flu deaths
January: Bird flu research resumes -- but not in U.S.
France: Tainted horse meat likely eaten
CNNMexico.com contributed to this report.
Part of complete coverage on
March 7, 2014 -- Updated 1527 GMT (2327 HKT)
The U.S. huffing over Ukraine jars with many after recent U.S.-led interventions, writes Simon Tisdall.
March 8, 2014 -- Updated 0354 GMT (1154 HKT)
Venezuelan President Nicolas Maduro is unapologetic about his government's response to opposition protesters.
March 6, 2014 -- Updated 1653 GMT (0053 HKT)
He's 12 years old and going blind -- so his parents are taking him on a trip to fill his world with beautiful images.
Track star Oscar Pistorius is accused of killing his girlfriend, Reeva Steenkamp. Follow live updates of South Africa's trial of the century.
March 6, 2014 -- Updated 1357 GMT (2157 HKT)
To celebrate International Women's Day, CNN's Leading Women is inviting you to a Tweetchat.
March 6, 2014 -- Updated 2247 GMT (0647 HKT)
Women journalists in the testosterone-fueled world of sports are still the target of abuse.
March 6, 2014 -- Updated 1027 GMT (1827 HKT)
Photographer Zack Seckler's series presents Botswana from between 50 and 500 feet, providing a unique view of the savannah.
March 5, 2014 -- Updated 0218 GMT (1018 HKT)
Concorde is a thing of the past, but a number of companies are racing to release the first supersonic business jet.
March 7, 2014 -- Updated 2059 GMT (0459 HKT)
Browse through images you don't always see on news reports from CNN teams around the world.
March 7, 2014 -- Updated 1852 GMT (0252 HKT)
From U.S. President Obama's phone call to Russian President Putin, to a python swallowing a crocodile, browse photos from last week.
March 7, 2014 -- Updated 0543 GMT (1343 HKT)
Did you know that the idea to mark road surfaces reportedly came from watching a milk truck drip milk on the road?
The undersea cables wiring the Earth: this is what the Internet actually looks like.
Today's five most popular stories