On march 5, 2017, usda confirmed highly pathogenic avian influenza hpai h7 in a commercial poultry flock along the mississippi flyway. If you suspect any type of bird flu in poultry you must report it immediately by calling the defra rural services helpline on 03000 200 301. Causes of bird flu avian influenza bird flu is caused by strains of the influenza virus that are able to infect avian bird cells. Most humans who have been infected with avian influenza had contact with live poultry, and there are no reports of humans contracting the virus by consuming. Infection of domestic poultry, such as chickens, can cause severe disease.
Use the information below to learn about the symptoms of avian flu for birds and h. Bird flu avian influenza, h5n1, h5n2, h5n8, h7n9 what is bird flu. Bird flu, also called avian influenza, a viral respiratory disease mainly of poultry and certain other bird species, including migratory waterbirds, some imported pet birds, and ostriches, that can be transmitted directly to humans. Symptoms may start out as normal flu like symptoms. Avian flu general precautions avian flu is a viral disease and it can be very contagious. In february 2005, researchers in vietnam reported cases of bird flu where the virus infected the brain and digestive tract of two children. Bird flu is a type of viral infection which is contagious and affects birds. Signs and symptoms of bird flu infections in people can include. Bird flu viruses have been isolated from more than 100 species of wild. Avian influenza, known informally as avian flu or bird flu, is a variety of influenza caused by viruses adapted to birds.
The disease caused by the h5n1 virus is a particularly severe form of pneumonia that leads to viral pneumonia and multiorgan failure in many people who become infected. Causes of bird flu avian influenza bird flu is caused by strains of the influenza virus that are able to infect avian bird. Avian flu virus does not usually infect humans but a number of cases of human avian flu have occurred since 1997. This bird flu is also called as avian influenza in which birds are affected by a particular influenza a virus. Bird flu, or avian flu, is an infectious type of influenza that spreads among birds. Outbreaks of bird flu have occurred in asia, africa, north america and. It is caused by the bird flu virus h5n1 influenza a virus. Bird flu is technically caused by h5n1 and h7n9 bird flu viruses. In many patients, the disease caused by the h5n1 virus makes the patient ill very rapidly. Jul 21, 2014 avian flu clinical signs, bird flu symptoms in backyard chicken. If you develop any of the signs or symptoms listed in this fact sheet, call the health department of the state you are in immediately. The virus can be passed from birds to people, although transmission is considered rare. The species of influenza a virus is all viruses which make the birds have influenza.
Avian flu healthcare workers avian flu is a viral disease and it can be very contagious and even deadly in poultry e. This hpai h7 strain is of north american wild bird origin. Researchers are working on vaccines to help protect people from bird flu. Olsen sj, laosiritaworn y, pattanasin s, prapasiri p, dowell sf. Poultry and poultry products can be consumed following good hygienic and cooking practices. It is caused by any of the several types of swine influenza virus. Understanding the signs and symptoms of the avian flu is important for immediate treatment to take place. Although h5n1, h7n9 and h5n6 dont infect people easily and arent. At this point, it appears that some people have been infected with the bird flu, and some have died from it. Outbreaks of avian influenza viruses later increased in frequency.
More than a dozen types of bird flu have been identified, including the two strains that have most recently infected humans h5n1 and h7n9. Some ai viruses circulate in wild bird populations causing no disease or only mild disease. It is rare for people to get infected with bird flu viruses, but it can happen. The spread of the h5n1 bird flu epidemic in asia in 2004. Since 2004 it has ripped through poultry and wild bird populations.
Bird flu avian influenza symptoms and causes mayo clinic. The bird flu is caused by the viruses adapted to bird. Bird flu, or avian flu, is an infectious viral illness that affects mainly birds. Oct 22, 2019 health officials worry that a global outbreak could occur if a bird flu virus mutates into a form that transmits more easily from person to person. The current news on bird flu is important because it is possible for very serious human flu viruses to develop from bird flu viruses. This poses a significant challenge in the development of vaccines to protect. Learn about vaccination, transmission, treatment, prevention, and prognosis. Rarely seen in the united states, bird flu is a type of influenza that can be passed from birds to humans. This fact sheet has information about bird flu and bird flu infections in people.
Poultryhandling practices during avian influenza outbreak, thailand. When bird flu does strike humans, it can be deadly. Currently, a particularly deadly strain of bird flu h5n1 continues to spread among poultry in egypt and in. Avian flu, also called bird flu, is a contagious respiratory disease that can infect humans as well as birds. Avian flu clinical signs, bird flu symptoms in backyard chicken.
Avian influenza known informally as avian flu or bird flu is a variety of influenza caused by viruses adapted to birds. When people do become infected, the mortality rate is about 60%. The first known cases in humans were reported in 1997, when an outbreak of avian influenza a virus subtype h5n1 in poultry in hong kong led to severe illness in 18. Bird flu viruses have been isolated from more than 100 species of wild birds and is endemic in many aquatic wild bird. Humans know the signs indicating that birds are infected with avian influenza viruses. This can worsen to become a severe respiratory disease that can be fatal. Identifying early bird flu symptoms in chickens offers the chance to mitigate the negative effects often felt by farmers and their constituents. The virus that causes bird flu is an influenza a type virus. Avian influenza or bird flu is a group of viruses that occur naturally in birds in several areas of the world one of these viruses, known as h5n1, is causing severe disease in wild birds, chickens, and other poultry people who have had close contact with sick poultry have also become infected and gotten very sick approximately half of the people known to be infected have died. The h5n1 strain of influenza often referred to as bird flu is first known to have jumped from chickens to humans in 1997. Two types, h5n1 and h7n9, have infected some people during outbreaks in asia. Suspected cases of avian influenza bird flu are being reported from various parts of kerala.
Avian influenza or bird flu is a lung and airway disease found in birds, and it is caused by the influenza virus. Bird flu brazil pdf ppt case reports symptoms treatment. Bird flu is similar to swine flu, dog flu, horse flu and human flu as an illness caused by strains of influenza viruses that have adapted to a specific host. Health officials worry that a global outbreak could occur if a bird flu virus mutates into a form that transmits more easily from person to person. Although symptoms of avian influenza in humans from viruses other than h5n1 include. The disease caused by the h5n1 virus is a particularly severe form of pneumonia that leads to viral pneumonia and multiorgan failure in. Aug 26, 2014 bird flu is a notifiable animal disease. But there are 4 strains that have caused concern in recent years. Bird flu refers to an illness caused to a particular host caused be any of species of influenza virus. On the other hand, swine flu is an influenza that affects pigs. Ai is an infectious disease of birds, caused by a number of different strains of ai virus. Bird flu h5n1 is a fast evolving virus that undergoes mutation to form more infective and highly pathogenic strains.
Bird flu infections in people are rare, but possible. Bird flu symptoms in chickens how to identify the dangers. Human infection with bird flu is rare, but when it occurs, it is often fatal. This viral infection can also spread to humans, so if your bird is infected, seek immediate treatment and take all necessary precautions to prevent an outbreak of bird flu.
Most avian influenza viruses do not cause illness in people. It will not prevent the bird flu if you are exposed to it. Avian influenza or bird flu is an infection found in birds that is caused by the influenza a virus. Bird flu, also called avian influenza, is a viral infection that can infect not only birds, but also humans and other animals. These cases make it clear that bird flu in humans may not always look like typical cases of flu.
Signs and symptoms of bird flu may begin within two to seven days of infection, depending on the type. There are many different types of bird flu, and some cause disease while others do not. Bird flu, a viral respiratory disease of poultry and other bird species, including migratory waterbirds, that can be transmitted to humans. So, the kerala government has decided to pay compensation to the owners of the hens which were culled as part of the governments precautionary measures following the outbreak of bird flu. Avian influenza or bird flu is a viral flu or infection that not necessarily taints the birds alone, but even most of the animals. Bird flu avian influenza is an illness that affects wild and domesticated birds and typically causes either little or no symptoms unless the bird population is susceptible, in which case it may cause death in many birds within about 48 hours.
However, it is still a good idea to get the yearly flu shot so that you stay healthy. Bird flu and swine flu pandemics both resulted from influenza a viruses. These were people infected by a type of bird flu that spread among people. And on march 7, 2017, usda s national veterinary services laboratories nvsl confirmed the full subtype of this hpai h7 as north american wild bird lineage h7n9 hpai. How infected backyard poultry could spread bird flu to people. Human cases of h5n1 avian influenza occur occasionally, but it is difficult to transmit the infection from person to person.
As in birds, bird flu can lead to complications, including pneumonia and multiorgan failure, and has a high mortality death rate in infected humans. Bird flu, or avian flu, causes symptoms such as fever, cough, and sore throat. Bird flu in birds wild water birds like ducks and geese can be infected with bird. Bird flu symptoms in humans can vary and range from typical flu symptoms fever, sore throat, muscle pain to eye infections and pneumonia. Differences between bird flu and swine flu bird flu vs. Aug 17, 2017 avian influenza or bird flu is a viral flu or infection that not necessarily taints the birds alone, but even most of the animals. Learn about bird flu viral subtypes and their detection. Pdf pandemic influenza virus has its origins in avian influenza viruses. There have been cases of h5n1 and h7n9 spreading among people. H5n1 is a type of influenza virus that causes a highly infectious, severe respiratory disease in birds called avian influenza or bird flu. Bird flu is similar to swine flu, dog flu, horse flu and human flu as an illness caused by strains of influenza viruses that have adapted to a. The type with the greatest risk is highly pathogenic avian influenza hpai.
Most reported bird flu infections in people have happened after unprotected contact with infected birds or contaminated surfaces. So far, the evidence is that transmission of the bird flu from human to human is very limited. Influenza aviar preparativos y respuesta del usda pdf, 229 kb avian influenza usda efforts and response vietnamese pdf, 272 kb imports of legal birds and bird products pdf, 347 kb posters. Most of the signs and symptoms of bird flu overlap with those of other respiratory illnesses like seasonal flu. Division of disease control what do i need to know. How infected backyard poultry could spread bird flu to people pdf. However, it is still a good idea to get the yearly flu shot so that.
Bird flu, or avian influenza, is a viral infection spread from bird to bird. However, people infected with avian flu viruses may have a. Your health department wants to hear from you, even if it turns out to be a false alarm. Selfobservation instructions for demobilizing bird flu. Bird flu is caused by a type of influenza virus that rarely infects humans.
Avoid close contact with infected or suspected birds and animals, specially. There are lots of different strains of bird flu virus. The virus spreads from bird to bird from the saliva, nasal secretions. In january 2015, the first cases of avian flu h7n9 were identified in north america in two returning travelers from china in british columbia, canada. C or greater or feeling feverish, cough, sore throat, runny or. Aug 22, 2009 in february 2005, researchers in vietnam reported cases of bird flu where the virus infected the brain and digestive tract of two children. Avian flu can spread quickly and negatively affect the health of chickens within hours.
Jan 10, 2020 bird flu and swine flu pandemics both resulted from influenza a viruses. After an incubation period of 3 to 5 days, infected birds lack an appetite, no longer lay eggs, and show symptoms in the. The flu shot that is given during the fall of each year will prevent the common form of flu that affects people every winter. Bird flu viruses infect birds, including chickens, other poultry, and wild birds such as ducks. Bird flu also termed avian influenza or avian influenza a is an illness that affects wild and domesticated birds that usually causes either little or no symptoms unless the bird population is susceptible, in which it may cause death in many birds within about 48 hours. What are the signs and symptoms of h5n1 bird flu in humans. Lets learn in details, symptoms of birdflu, causes of birdflu, birdflu risks, avian influenza. Thats because they have heard about a severe form of bird flu that causes many bird deaths. Of great concern are the highly pathogenic avian influenza hpai viruses e.
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