Is There Bird Flu in California Now? Cases, Locations, What to Do

Yes, bird flu is still being detected in California as of May 2026, but the situation looks very different depending on whether you're asking about wild birds, dairy cattle, or people. Because the question often comes up as a countrywide concern, you may also be wondering whether bird flu is detected in Mexico, and the answer depends on whether you mean birds or people bird flu in Mexico. Wild birds and marine mammals have tested positive for H5N1 in recent weeks. Is there bird flu in South Africa? The virus has been detected in multiple regions globally, so it is worth checking current national and international wildlife and health surveillance updates for the latest in South Africa H5N1. Dairy herds remain affected. Human cases tied to California exposures have been reported through national surveillance, but no widespread human-to-human transmission has occurred. The risk to the average California resident going about daily life is low, but if you work with poultry, handle dairy cattle, or had close contact with sick or dead birds, there are specific steps you should take today.

What bird flu actually means here

When people search 'is there bird flu in California,' they usually mean one of two very different things: are birds infected, or are people getting sick? Both matter, but they carry very different implications. The strain circulating right now is Highly Pathogenic Avian Influenza (HPAI) H5N1, clade 2.3.4.4b, a Eurasian-lineage virus that has been spreading globally through wild bird populations. It is not the same as seasonal human flu. Seasonal flu spreads easily from person to person; H5N1 does not, at least not with the current strains. The main concern today is its impact on birds, poultry flocks, and the dairy industry, with occasional spillover infections in people who had direct, unprotected contact with infected animals.

In birds, HPAI H5N1 is devastating, causing rapid death in domestic poultry and spreading quickly through flocks. In wild birds it can look different, with some species dying in large numbers and others carrying the virus with fewer visible signs. In people who do get infected, the illness can range from mild eye irritation (conjunctivitis) to severe respiratory disease, but the key word is 'can.' Most U.S. cases to date have been mild, and every confirmed human case has been traced to direct animal contact, not contact with another sick person.

Where bird flu has been detected in California right now

California has detections across multiple animal categories, and they are spread across the state rather than concentrated in one region.

Wild birds and marine mammals

USDA APHIS tracks confirmed HPAI detections in wild birds by county, collection date, and species, with the database last updated as recently as May 22, 2026. California consistently appears in this table across multiple counties and bird species. On the mammal side, APHIS confirmed two notable California detections with a detection date of April 29, 2026: a sea otter in Monterey County and a California sea lion in San Mateo County, both testing positive for EA H5N1. Marine mammals getting infected is a signal that the virus is circulating in coastal ecosystems, which matters if you walk beaches or handle wildlife.

Poultry and dairy cattle

California's Department of Food and Agriculture (CDFA) maintains an active statewide summary for H5N1 in livestock. The current status is that all movement restrictions placed on HPAI-infected poultry premises in California have been lifted, meaning the acute poultry outbreak phase has eased. However, California dairy cattle herds are still affected. CDFA's page tracks total infected dairies and how many have been released from quarantine, and those numbers continue to change. If you're in dairy farming, CDFA's livestock page is the single most important thing to bookmark right now. For poultry-specific new detections, USDA APHIS updates its livestock dashboard every weekday with cases from the last 30 days alongside cumulative state totals.

The actual case counts: birds versus people

This is where a lot of confusion happens, so it helps to be precise. There are animal detections, and then there are human cases. These are counted and reported through completely different systems.

On the human side, CDC has reported 71 total confirmed A(H5) bird flu cases in the United States since February 2024. Of those, 7 were detected through routine national flu surveillance and 64 through targeted human monitoring of people known to be exposed to infected animals. California appears in CDC's state monitoring table, meaning some California residents with exposure to infected animals were monitored and some cases were counted. The important context: every confirmed U.S. human case has been linked to direct animal exposure, not community spread.

Is this an epidemic, or just ongoing limited detections?

This is the most important framing question, and the honest answer is: it is ongoing, but it is not an epidemic in the public-health sense of uncontrolled spread through the human population. If you are wondering about Arizona specifically, the latest updates are also worth checking in USDA APHIS and CDC dashboards for any new detections or reported human cases. What California has right now is endemic circulation of H5N1 in wild bird populations, with spillover into poultry, dairy cattle, marine mammals, and occasionally people who are directly exposed. That is a public health concern, especially for agricultural workers and wildlife handlers, but it is not the same as a spreading human outbreak. There is no human-to-human transmission chain in California or anywhere in the United States.

If you are wondering whether California is in a formal state of emergency, that topic carries its own nuance around executive declarations and resource mobilization. Whether California is in a state of emergency for bird flu is a question of specific executive actions and how agencies are mobilizing resources right now California is in a formal state of emergency. What matters practically is that detection systems are active, monitoring is ongoing, and state and federal agencies are responding in real time. The virus is not going away soon, which is why long-term prevention habits matter more than a single alarm-and-done response.

What you should do today

Your next steps depend entirely on your situation. Here are three different tracks.

If you're a household member with no direct animal exposure

• Do not touch sick or dead wild birds. If you find one, report it to local wildlife authorities and do not handle it with bare hands.
• Stay away from areas with obvious bird die-offs, like stretches of beach with multiple dead birds.
• Pasteurized dairy products and fully cooked poultry are safe to eat. The virus is heat-sensitive and does not survive cooking temperatures.
• There is no need to avoid parks, hiking trails, or outdoor activities. The virus does not spread through casual outdoor air exposure.
• Monitor CDPH and CDC for updates, but do not rely on social media for case counts.

If you keep backyard poultry or work on a farm

• Practice strict biosecurity: limit your flock's contact with wild birds by using covered runs, securing feed, and removing standing water that wild birds use.
• Wild birds are the primary transmission source for HPAI, so anything that keeps them away from your birds reduces risk dramatically.
• Wear gloves and eye protection when handling birds or cleaning coops, especially if any birds are showing signs of illness.
• Report unusual illness or unexplained deaths in your birds immediately by calling the CDFA Sick Bird Hotline at (866) 922-2473.
• If you work with dairy cattle, follow CDFA and USDA biosecurity protocols for herd movement and milk handling. Check CDFA's livestock status page regularly.
• If you have direct unprotected contact with infected or suspected animals, monitor yourself for symptoms for 10 full days after your last exposure.

If you've had recent contact with wild birds or sick animals

• Monitor yourself for illness for 10 days after your last exposure. This is the window CDC and CDPH use for post-exposure monitoring.
• Watch for fever, cough, sore throat, shortness of breath, and especially eye redness or discharge, which has been the predominant symptom in recent U.S. H5 cases.
• If any symptoms develop during that 10-day window, call your state or local health department immediately before going to a clinic or emergency room.
• Do not wait and see if symptoms get worse. Early reporting and specimen collection within 24 to 72 hours of symptom onset gives the best diagnostic results.
• CDPH guidance specifies that specimens should be collected no later than 10 days after symptom onset for anyone meeting exposure criteria.

Symptoms to watch for and when to get help

In people, H5N1 symptoms typically appear about three days after exposure, though the range is two to seven days. The most common presentation in recent U.S. cases has been conjunctivitis (eye redness and discharge), sometimes without any respiratory symptoms at all. Other cases have presented more like a typical flu with fever, cough, sore throat, runny nose, muscle aches, and in serious cases, difficulty breathing. Gastrointestinal symptoms have also been reported.

In poultry, warning signs include sudden drops in egg production, birds that stop eating or drinking, swelling of the head or neck, unusual neurological behavior like stumbling, and unexplained rapid death in multiple birds. Any of these in combination, especially if multiple birds are affected quickly, should trigger a call to the CDFA hotline at (866) 922-2473, not a wait-and-watch approach.

The core message on seeking help: if you had direct contact with infected or suspected animals and you develop any symptoms, call your health department first. They will guide you on where to go and what to tell the clinician. Showing up at an urgent care without that heads-up risks missed diagnosis, since most general clinicians are not automatically testing for H5 unless bird flu is flagged as a possibility. Early reporting protects both you and the people around you.

Where to get the most current numbers

The situation is genuinely moving, and any article, including this one, will lag behind the live dashboards. For the most current California-specific data, check three sources directly: CDFA's H5N1 livestock page for dairy and poultry status, USDA APHIS's wild bird and mammal detection tables for animal detections by county, and CDC's A(H5) Current Situation page plus the Surveillance and Human Monitoring dashboard for human case counts by state. APHIS updates its livestock dashboard every weekday. CDC streamlined its reporting cadence in July 2025, so check the page notes for the current update schedule. California's CDPH also maintains clinician and public-facing guidance pages that are worth bookmarking if your situation involves potential human exposure.