when will bird flu be over

Wild birds can be infected with highly pathogenic avian influenza (HPAI) and show no signs of illness. They can carry the disease to new areas when migrating, potentially exposing domestic poultry to the virus.

APHIS’ wild bird surveillance program provides an early warning system for the introduction and distribution of avian influenza viruses of concern in the United States, allowing APHIS and the poultry industry to take timely and rapid action to reduce the risk of spread to our poultry industry and other populations of concern.

Captive wild birds, defined by the World Organisation for Animal Health (WOAH) as a wild animal that is captive or otherwise lives under or requires human supervision or control, are included in the numbers reported on this page. Captive wild birds, including sick wild birds that may have died after being found and taken to a rehabilitator or sanctuary, will have the designation of “captive wild bird” in the WOAH Classification column. To remain consistent with current reporting, information will continue to be broken down to the county level. To protect privacy, private or business names will not be released. This is consistent with current reporting of wild birds as well as commercial and backyard flocks.

APHIS is continuing to process samples collected over the past year from State and partner agencies and will continue to post this information on this page. The detection date is the date of National Veterinary Services Laboratories confirmatory testing. APHIS will provide updates below when there are significant differences between sample collection and detection dates.

For submitting agencies who notice data errors or omissions, please send an email with supporting documentation (laboratory report/accession number/data collection) to wslabresults@usda.gov.

Both maps represent samples collected by APHIS Wildlife Services as well as morbidity/mortality samples submitted by State agencies and private facilities. The data presented visually in these maps is also available in the table below.

Date Detected: Specimens detected by the NAHLN H5 assay were further tested by a developmental real-time RT PCR targeting the Eurasian lineage goose/Guangdong H5 clade 2.3.4.4b. “Date Detected” indicates the date when a positive detection was obtained by the developmental RRT PCR targeting the Eurasian lineage goose/Guangdong H5 clade 2.3.4.4b.

EA = Eurasian; AM = North American; the EA H5 (2.3.4.4) viruses are highly pathogenic to poultry.

Virus lineage, subtype, and pathotype per cleavage site analysis are determined from sequence data direct from the sample or virus isolate. An incomplete subtype indicates either (1) the specimen is pending virus isolation and/or sequencing results, or (2) the specimen was detected by the developmental H5 RRT PCR targeting the Eurasian lineage goose/Guangdong H5 clade 2.3.4.4b but could not be further characterized, often due to a low level of virus or viral RNA present in a given sample.

Avian influenza is caused by influenza Type A virus (influenza A). Avian-origin influenza viruses are broadly categorized based on a combination of two groups of proteins on the surface of the influenza A virus: hemagglutinin or “H” proteins, of which there are 16 (H1–H16), and neuraminidase or “N” proteins, of which there are 9 (N1–N9). Many different combinations of “H” and “N” proteins are possible. Each combination is considered a different subtype, and related viruses within a subtype may be referred to as a lineage. Avian influenza viruses are classified as either “low pathogenic” or “highly pathogenic” based on their genetic features and the severity of the disease they cause in poultry. Most viruses are of low pathogenicity, meaning they cause no signs or only minor clinical signs of infection in poultry.

Every Wednesday, this page will be updated to reflect any new information. A collection of wild bird data has been ongoing since January 20, 2022. Data on poultry have been collected since February 8, 2022. Protective Actions for People.

Please send an email to wslabresults@usda with supporting documentation (laboratory report, accession number, data collection) for submitting agencies that find data errors or omissions. gov.

Sequence data straight from the sample or virus isolate is used to determine the pathotype, subtype, and virus lineage per cleavage site analysis. An incomplete subtype denotes one of two things: either the specimen was found using the developmental H5 RRT PCR targeting the Eurasian lineage goose/Guangdong H5 clade 2, or the specimen is awaiting virus isolation and/or sequencing results. 3. 4. 4b but were unable to be further identified, frequently as a result of a low quantity of virus or viral RNA in a particular sample.

Highly pathogenic avian influenza (HPAI) can infect wild birds without causing any symptoms. When they migrate, they can bring the illness with them, possibly exposing domestic poultry to the virus.

Captive wild birds, defined by the World Organisation for Animal Health (WOAH) as a wild animal that is captive or otherwise lives under or requires human supervision or control, are included in the numbers reported on this page. Captive wild birds, including sick wild birds that may have died after being found and taken to a rehabilitator or sanctuary, will have the designation of “captive wild bird” in the WOAH Classification column. To remain consistent with current reporting, information will continue to be broken down to the county level. To protect privacy, private or business names will not be released. This is consistent with current reporting of wild birds as well as commercial and backyard flocks.

The maps display samples gathered by APHIS Wildlife Services in addition to samples of morbidity and mortality provided by private facilities and State agencies. The table below contains the same information that is shown visually in these maps.

FAQ

Is the bird flu over?

The bird flu outbreak on poultry farms has, to an extent, dissipated, aside from a flare up in late 2023. Yet over the last two years, the virus has continued to spread — to different places and to different kinds of animals. Including mammals.

Is bird flu still around 2024?

Highly pathogenic avian influenza ( HPAI ) H5N1 was confirmed in commercial poultry on 14 February 2024 at a premises near Hutton Cranswick, East Yorkshire, Yorkshire (AIV 2024/01). Following successful completion of disease control activities and surveillance in the zone, the surveillance zone has been revoked.

How long can bird flu virus survive?

The length of time that avian influenza viruses can survive on surfaces varies by the surface type and environmental factors such as temperature and humidity. They can survive longer under cold and wet conditions (weeks to months) than under warm, dry conditions (hours to days).

Is bird flu contagious?

Avian influenza A(H5N1) is a type of flu virus that usually infects wild birds and can spread to domestic birds and other animals. It occasionally infects people, though it is extremely rare for it to be transmitted from one person to another.