Symptoms of bird flu in humans have ranged from typical flu like symptoms fever, cough, sore throat and muscle aches to eye infections, pneumonia, severe respiratory diseases such as acute respiratory distress, and other severe and lifethreatening complications. Pdf in 1918, a strain of influenza a virus caused a human pandemic resulting in the. One should stay at home from work, school and crowed places in case flulike symptoms are observed. There are lots of different strains of bird flu virus. Fever is usually present with h1n1 in up to 80% of all flu cases. Bird flu is an infection caused by avian influenza viruses, which are of different types a. One of the difficulties with bird flu is that healthy chickens can be infected. Symptoms of bird flu are similar to flu like symptoms fever, cough, sore throat, and muscle aches. Symptoms of bird flu are similar to flulike symptoms fever, cough, sore throat, and muscle aches. Signs and symptoms of bird flu may begin within two to seven days of infection, depending on the type.
See a doctor immediately if you have recently returned from a country that has had an outbreak of bird flu and you get flu symptoms. Information on avian influenza avian influenza flu. The virus can be passed from birds to people, although. Human infections with bird flu viruses are rare, but they can happen when enough virus. Above all else, bird flu, better named avian influenza, is an animal health problem. Infection does not produce symptoms of illness in birds which birds are commonly affected. Bird flu is an infectious disease of birds caused by influenza viruses. Differences between bird flu and swine flu bird flu vs. Bird flu symptoms in chickens how to identify the dangers. The reported signs and symptoms of avian influenza a virus. Influenza a viruses are found in many other kinds of animals, including dogs, horses, seals and whales. Symptom cold swine flu seasonal flu fever fever is rare with a cold. About 20 percent of the people who have been infected have died.
The california department of public health cdph influenza surveillance program cisp is a collaborative effort between cdph, the centers for disease control and prevention cdc, kaiser permanente, california local health jurisdictions and the participating california sentinel providers and sentinel laboratories. The deadly bird flu is often seen on the domesticated birds because the infected ones have close contact with other birds. Avian flu fact sheet new hampshire department of health and. To better understand this deadly virus, an expert group of researchers and virus hunters set out to search for the lost 1918 virus, sequence its genome, recreate the virus in a highly safe and regulated laboratory setting at cdc, and ultimately study its secrets to. It is rare for people to get infected with bird flu viruses, but it can happen. There are many different types of bird flu, and some cause disease while others do not. Avian influenza or bird flu is an infection found in birds that is caused by the influenza a virus.
It can make chickens, ducks, turkeys, and other tame birds very sick. Identifying early bird flu symptoms in chickens offers the chance to mitigate the negative effects often felt by farmers and their constituents. In february 2005, researchers in vietnam reported cases of bird flu where the virus infected the brain and digestive tract of two children. A new emerging pandemic threat and its pharmacological intervention. Since last december nearly 50 million chickens and turkeys have been euthanized due to bird flu. Avian influenza, known informally as avian flu or bird flu, is a variety of influenza caused by viruses adapted to birds. Feb 27, 2020 symptoms of bird flu in humans resemble those of the human variety of influenza and include fever, sore throat, cough, headache, and muscle aches, which appear following an incubation period of several days. Bird flu viruses have been isolated from more than 100 species of wild. Bird flu division of disease control what do i need to know. Drugs currently available for the treatment or prophylaxis of influenza infections. Avian influenza also known as avian flu or bird flu is a naturally occurring viral infection of birds. Should you be concerned about a particularly bad strain of bird flu h5n1. Avian influenza a virus infections in humans avian influenza flu.
Bird flu, or avian flu, is an infectious viral illness that affects mainly birds. H7n9 avian influenza a virus fact sheet tulsa health department page 1 of 2 a new bird flu virus, called h7n9 for short, is causing serious illness in people in china. Avian influenza bird flu frequently asked questions what is avian influenza or bird flu. This can worsen to become a severe respiratory disease. Skip directly to site content skip directly to page options skip directly to az link centers for disease control and prevention. Bird flu viruses infect birds, including chickens, other poultry, and wild birds such as ducks. Ai viruses can be classified by their ability to cause illness and death.
Coughing a hacking, productive mucousproducing cough is often present with a cold. However, avian influenza a viruses are very contagious among birds and some of these viruses can sicken and even kill certain domesticated bird species including chickens, ducks, and turkeys. Face masks and gloves must be used when moving out in crowded places or nursing any ill patient. Wild birds carry the viruses, but usually do not get sick from them. Human infections with bird flu viruses can happen when enough virus gets into a. But flu viruses mutate change and adapt very rapidly. 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. In collaboration with domestic and global partners, cdcs influenza division pdf icon 1. It is necessary to consolidate in a practical format the main points of our. Bird flu, or avian flu, is an infectious type of influenza that spreads among birds. Adults may be able to infect others 1 day before getting symptoms and.
Who is at risk of getting bird flu highly pathogenic ah5n1 avian influenza. It is caused by any of the several types of swine influenza virus. The time between exposure to bird flu and symptoms may be up to 10 days. It is important to note that poultry that originate from areas of the world where the virus is common are not allowed to.
Like humans, birds have naturally occurring influenza flu viruses. In most cases it causes no signs of infection or only minor symptoms in birds. Lpai h5 and h7 strains have the potential to mutate into hpai and are therefore closely monitored. Infected birds can shed avian influenza a viruses in their saliva, nasal secretions, and feces. Avian influenza bird flu frequently asked questions for. In january 2016, a highly pathogenic avian influenza hpai virus, h7n8, was identified on a commercial poultry farm in dubois county, indiana. A brief history of flu pandemics the abcs of influenza viruses, or all about the flu a bird flu primer h5n1 is on the move betting on bird flu. Division of disease control what do i need to know. Identification and reporting avian influenza ai, also known as bird flu, is a group of viruses that can infect domestic and wild birds.
But there are 4 strains that have caused concern in recent years. Bird flu, also known as avian influenza, is a type a. An external file that holds a picture, illustration, etc. Prevention cdc has the capability to test for many avian influenza viruses. The type with the greatest risk is highly pathogenic avian influenza hpai. Avian influenza, or bird flu is a contagious disease of animals caused by viruses that normally infect only birds and, less commonly, pigs. Poultry chickens and ducks, swallow, and other wild birds mostly chickens and occasionally quail where is the likely place of early detection. Early symptoms are similar to those of seasonal flu and may include fever, cough, sore throat, muscle. On the other hand, swine flu is an influenza that affects pigs. Bird flu viruses occur naturally among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species. In the late 1990s, a new strain of bird flu arose that was remarkable for its ability to cause severe disease and death, especially in domesticated birds such as ducks, chickens, or turkeys. 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. Symptoms may start out as normal flu like symptoms.
The spread of bird flu viruses from an infected person to another person has been reported very rarely and has not been reported. Frequently asked questions for h7n8 avian influenza. Exposure to birds, bird faeces or feathers is the most likely way for a human to catch bird flu. Pdf bird flu is an infectious disease of birds caused by influenza a h5n1 virus. Prescription medicines approved for human flu viruses should work, but the flu. Symptoms of bird flu in humans have ranged from typical flulike symptoms fever, cough, sore throat and muscle aches to eye infections, pneumonia, severe. It is caused by the bird flu virus h5n1 influenza a virus. Researchers are working on vaccines to help protect people from bird flu. Differences between cold, swine flu and seasonal flu symptoms. Adults may be able to infect others 1 day before getting symptoms and as long as 5 days after getting sick. Symptoms of bird flu in humans have ranged from typical flulike symptoms fever, cough, sore throat and muscle aches to eye infections, pneumonia, severe respiratory diseases such as acute respiratory distress, and other severe and lifethreatening complications.
Severe infection can result in conjunctivitis or such lifethreatening complications as bacterial or viral pneumonia and acute respiratory. Bird flu is a type of viral infection which is contagious and affects birds. Rarely seen in the united states, bird flu is a type of influenza that can be passed from birds to humans. Much of the evidence points to an avian bird flu that mutated into a form transmittable between humans. There may be little or no obvious disease in wild waterfowl. Currently, people are only likely to contract bird flu when in direct contact with an infected bird. Avian influenza is a viral disease that can affect bird species throughout the world. Information for people exposed to birds infected with avian. Influenza a h5n1 virus also called h5n1 virus is an. The 1918 h1n1 flu virus caused the deadliest pandemic of the 20th century.
Other symptoms that have been reported include eye infections, pneumonia, severe respiratory distress, and other lifethreatening complications. Bird flu viruses occur naturally among wild aquatic birds worldwide and. These strains of the virus pose little threat to human health. The virus can be passed from birds to people, although transmission is considered rare. Monitor your health for symptoms of avian influenza virus infection. Lpai, or low path avian influenza, naturally occurs in wild birds and can spread to domestic birds.
Dec 30, 2019 this is to prevent the disease spreading to anymore flocks. Recently, news reports about new strains of bird flu have raised concern among scientists and the public about the potential of an epidemic even worse than that of 1918. There is a flu for birds just as there is for humans and, as with people, some forms of the flu are worse than others. Wild waterfowl, especially ducks, are a socalled natural reservoir of influenza viruses, including the bird flu. Although the virus usually do not infect humans, more than 200.
Avian influenza refers to the disease caused by infection with avian bird influenza flu type a viruses. Flulike symptoms of fever, cough, sore throat and muscle aches shortness of breath eye infections severe cases of bird flu can cause serious breathing problems. There is flu for birds just as there is for humans and, as with people, some forms of the flu in birds are worse than others. Flu viruses spread from person to person when people who are infected cough or sneeze. Bird flu is spread between birds and from birds to humans. Two types, h5n1 and h7n9, have infected some people during outbreaks in asia. Monitors and assesses influenza viruses and illness.
Although h5n1, h7n9 and h5n6 dont infect people easily and arent. Highly pathogenic ai is extremely infectious, can cause high death loss and can spread rapidly from flock to flock. Backyard farms and poultry farms live bird markets wholesale and retail is the virus in vietnam. The birds carry the virus without displaying any symptoms of the disease and can spread the virus over. Flu reports california department of public health. Lowpathogenic avian influenza lpai h7n8 was also identified. In case of flulike symptoms, the patient must be quarantined.
In many patients, the disease caused by the h5n1 virus makes the patient ill very rapidly. These cases make it clear that bird flu in humans may not always look like typical cases of flu. Bird flu or avian influenza is a viral disease of birds it spreads in different countries by ignoring the different laws through the migratory birds. Proper biosecurity measures can help keep flocks healthy and prevent bird flu and other diseases. Today, the source of this 1918 influenza pandemic is still being debated. This is the first time h7n8 viruses have been found in birds in the. Symptoms of bird flu in humans resemble those of the human variety of influenza and include fever, sore throat, cough, headache, and muscle aches, which appear following an incubation period of several days. Bird flu, also called avian influenza, is a viral infection that can infect not only birds, but also humans and other animals. They are amplified by poor knowledge about the disease, particularly a lack of. In most cases, they resemble those of conventional influenza, including. Avian influenza bird flu is an infection caused by viruses. Luckily, h7n9 is not spreading easily between people the way season influenza flu viruses do. Bird flu avian influenza is a disease caused by strains of influenza virus that primarily affects birds. Avian flu can spread quickly and negatively affect the health of chickens within hours.
What are the signs and symptoms of h5n1 bird flu in humans. H7n9 avian influenza a virus fact sheet tulsa health. Bird flu avian influenza symptoms and causes mayo clinic. The people in asia have higher risk of having avian flu due to the close quarters and low hygiene. There are many types of avian flu viruses that are carried by wild birds throughout the world, but these viruses do not. The term avian influenza is preferable because it is less easily confused with the human. Avian diseases transmissible to humans 2 avian influenza have been in areas where there is constant close contact between birds and humans or in cases where the humans were exposed to infected bird secretions. Avian influenza ai the bird flu is a virus that infects wild birds such as ducks, gulls, and shorebirds and domestic poultry such as chickens, turkeys, ducks, and geese. What you need to know background avian influenza bird flu outbreaks with a virus called h7n8 were reported in poultry in dubois county, indiana.
Avian influenza ai the bird fluis a virus that infects wild birds such as ducks, gulls, and shorebirds and domestic poultry such as chickens, turkeys, ducks, and geese. How does the bird flu risk causing a pandemic flu in humans. 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. Contagious disease of animals usually birds sometimes pigs pathogen is a virus rarely cross species barrier to humans. These viruses do not generally pose a risk to humans.
Bird flu avian influenza, h5n1, h5n2, h5n8, h7n9 what is bird flu. A vian influenza aithe bird fluis a virus that infects wild birds such as ducks, gulls, and shorebirds and domestic poultry such as chickens, turkeys, ducks, and geese. Influenza, also known as the flu, is a contagious respiratory disease caused by different strains of viruses. Webmd went to public health experts to get answers to your questions about how it is spread, its symptoms, and how to. There are many types of avian flu viruses that are carried by wild birds throughout the world, but these viruses do not usually cause disease in these birds. This is to prevent the disease spreading to anymore flocks. May 19, 2019 what are the symptoms of bird flu in humans. Avian influenza bird flu frequently asked questions what. One of the difficulties with bird flu is that healthy chickens can be infected and show no initial signs of carrying the disease.
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