Avian Flu Fast Facts | CNN


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Bird flu, also known as bird flu or bird flu, is a disease that usually only affects birds.

There are many different strains of avian influenza: 16 H subtypes and 9 N subtypes. Only those labeled H5, H7 and H10 resulted in human deaths.

The most common and deadly form of the virus is called “Influenza A (H5N1)” or “H5N1 virus”.

Most cases of human avian influenza infection result from contact with infected poultry or surfaces contaminated with the excreta of infected birds: saliva, nasal secretions or feces.

Symptoms of bird flu include fever, cough, sore throat and sometimes severe respiratory illness and pneumonia.

CDC Recommendations Oral oseltamivir (brand name: Tamiflu), inhaled zanamivir (brand name: Relenza), and intravenous permavir (brand name: Rapivab) are used to treat human disease associated with avian influenza.

this The mortality rate is close to 60% for infected people.

Early 1900s –Bird flu was first discovered in Italy.

1961 – The H5N1 strain was isolated in birds in South Africa.

December 1983 – Chickens in Pennsylvania and Virginia were infected with bird flu, and more than 5 million chickens were killed to stop the spread of the disease.

1997 – eighteen Six people in Hong Kong were infected with the H5N1 strain. These are the first recorded cases of human infection. Hong Kong destroyed its entire poultry population, or 1.5 million.

1999 Two children in Hong Kong infected with the H9N2 strain.

February 2003 – Eighty-four Dutch people were affected by the H7N7 strain and one died.

February 7, 2004 – twelve thousand chickens They were killed in Kent County, Delaware after they were found to be infected with the H7 virus.

October 7, 2005Bird flu spreads to Europe. Romanian officials have quarantined a village of about 30 people after three dead ducks tested positive for bird flu.

November 12, 2005 – A one-year-old boy in Thailand has tested positive for the H5N1 avian influenza virus.

November 16, 2005 – this The World Health Organization has confirmed two human cases of bird flu in China, including a female poultry worker who died from the H5N1 strain.

November 17, 2005 Indonesia has confirmed two deaths from the H5N1 avian influenza strain.

January 1, 2006 – A Turkish teenager died of H5N1 bird flu in Istanbul, and two of his sisters died later that week.

January 17, 2006 – 15-year-old girl from the north Iraq Died after contracting bird flu.

February 20, 2006Vietnam became the first country to successfully control the disease. A country is considered disease-free when it reports no new cases for 21 days.

March 12, 2006Officials in Cameroon have confirmed cases of the H5N1 strain. Bird flu has now affected four African countries.

March 13, 2006 – Bird flu officially confirmed Myanmar.

May 11, 2006 Djibouti announced its first H5N1 case – several birds and one human.

December 20, 2011 – this Statement from the U.S. Department of Health and Human Services Says the government is urging scientific journals to omit details of studies they plan to publish on the spread of H5N1 among mammals. There are concerns that this information could be misused by terrorists.

July 31, 2012scientists announced H3N8In 2011, a new strain of bird flu killed more than 160 seal pups in New England.

March 31, 2013 – Chinese authorities report first human case of H7N9 bird flu to the World Health Organization. H7N9 has not previously been detected in humans.

December 6, 2013 – a 73 year old Woman infected with H10N8 dies In China, the strain caused the first human death.

January 8, 2014 – Canadian health officials have confirmed that a resident of Alberta has died from H5N1 bird flu, the first case of the virus in North America. This is also the first case of H5N1 infection in a traveler who brought the H5N1 virus into a country where the virus does not exist in poultry.

April 20, 2015 – More than 5 million hens will be euthanized after bird flu was detected on a commercial layer farm in northwest Iowa, officials said. Nearly 8 million cases of bird flu have been detected in 13 states since December, according to the USDA. Health officials say there is little to no risk of H5N2 spreading to humans. No human infection with the virus has ever been found.

January 15, 2016 – The USDA has confirmed that a commercial turkey farm in Dubois County, Indiana has tested positive for the H7N8 bird flu virus.

January 24, 2017 – UK Department for Environment, Food and Rural Affairs issued a statement confirming A case of H5N8 avian influenza was detected in a flock of farmed pheasants in Preston, UK. The flock is estimated to number around 10,000 individuals. Some of the birds had died, and the remaining live birds on the premises were being “humanely” killed because of the disease, the statement added.

February 12, 2017 – Several provinces in China have closed live poultry markets to prevent the spread of bird flu following a spike in cases of the H7N9 virus. Human cases of H7N9 flu have been reported in at least six provinces this year, According to Chinese state media Xinhua.

March 5-7, 2017 – USDA confirms commercial Tennessee chicken farm tests positive for H7N9 bird flu, but said it was genetically distinct from H7N9 lineages outside of China. A flock of 73,500 birds in Lincoln County will be euthanized, according to Tyson Foods.

February 14, 2018 – The Hong Kong Center for Health Protection announced that 68-year-old woman treated for H7N4 strain. This is the first case of this strain in humans.

June 5, 2019 – Since 2013, there have been 1,568 confirmed human cases of H7N9 bird flu worldwide and 616 deaths, according to the United Nations’ Food and Agriculture Organization.

December 2019 – The UK Department for Environment, Food and Rural Affairs has confirmed a case of H5N1 bird flu on a poultry farm in Suffolk. 27,000 birds were humanely killed because of the disease.

April 9, 2020 – The USDA has confirmed that a commercial turkey flock in Chesterfield County, South Carolina has tested positive for the H7N3 avian influenza virus.

January 2021 – India culls tens of thousands of poultry after bird flu detection In ducks, crows and wild geese in at least a dozen places across the country.

February 18, 2021 – Russian authorities notified WHO They have detected H5N8 in humans. “If confirmed, this would be the first time an H5N8 virus has infected humans,” a WHO European spokesman said in a statement.

June 1, 2021 – The National Health Commission of China announces the first human case of H10N3.

February 2022 – Confirmed by USDA Wild and domestic birds in the United States have tested positive for H5N1 avian influenza. By May 17, 2023, CDC reports Poultry outbreaks have occurred in 47 states.

April 26, 2022 – The National Health Commission of China announced the first human case of H3N8.

April 28, 2022 – CDC announces confirmed case of H5 bird flu in Colorado man.

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