HPAI H5N1 Virus in Dairy Cattle – What We Know

In March 2024, Highly Pathogenic Avian Influenza (HPAI) A (H5N1), commonly referred to as bird flu, was confirmed in domestic U.S. livestock for the first time in a dairy operation in Texas. Since then, the virus has spread to 549 dairy operations across 15 states, raising widespread uncertainty throughout the dairy and livestock markets. Industry participants have raised concerns about the outbreak's potential impact on consumer perception and demand for dairy and meat products, though government agencies reiterate that the national food supply remains safe. Expana is closely monitoring the situation...

USDA Animal and Plant Health Inspection Service Shares Update on H5N1 Detection in Oregon Swine

Today, the U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) is sharing key updates regarding the detection of HPAI H5N1 in a backyard farm operation in Crook County, Ore., as well as additional information about the agency’s proactive efforts to protect livestock, farms and communities from avian influenza.

On Wed., Oct. 30, USDA APHIS announced that H5N1 avian influenza was detected in one of the pigs at this backyard farm, that two pigs tested negative...

Properly Cooked Pork Remains Safe Amidst Oregon H5N1 Swine Detection

The National Pork Producers Council (NPPC) confirms there is no food safety concerns about the nation’s pork supply after the detection of H5N1 influenza in swine on a small backyard farm in Oregon. NPPC continues to work closely with the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) Veterinary Services and pork industry stakeholders on disease surveillance programs.

“The confirmed case in Oregon poses no threat to consumer health or food safety; properly handled and cooked pork products remain safe for...

Federal and State Veterinary Agencies Share Update on HPAI Detections in Oregon Backyard Farm

There is no concern about the safety of the nation’s pork supply as a result of this finding.   

The U.S. Department of Agriculture (USDA) and Oregon state veterinary officials are investigating positive cases of H5N1 in a backyard farming operation in Oregon that has a mix of poultry and livestock, including swine. The Oregon Department of Agriculture announced on Friday, Oct. 25, that poultry on this farm represented the first H5N1 detection in Crook County, Oregon. On Tuesday, Oct...  

USDA Builds on Actions to Protect Livestock and Public Health From H5N1 Avian Influenza

Agriculture Secretary Tom Vilsack announced today that the U.S. Department of Agriculture (USDA) is planning to enhance national surveillance of H5N1 on dairy farms, building on measures taken by USDA since the beginning of the avian influenza outbreak. In partnership with state veterinarians, USDA will implement a tiered strategy to collect milk samples to better assess where H5N1 is present on U.S. dairy farms, with the goal to better inform biosecurity and containment measures, as well as to inform state-led efforts to reduce...

CDC A(H5N1) Bird Flu Response Update October 29, 2024.

CDC continues to respond to the public health challenge posed by a multistate outbreak of avian influenza A(H5N1) virus, or "H5N1 bird flu," in dairy cows, poultry and other animals in the United States. CDC is working in collaboration with the U.S. Department of Agriculture (USDA), the Food and Drug Administration (FDA), Administration for Strategic Preparedness and Response (ASPR), state public health and animal health officials, and other partners using a One Health approach.

Since April 2024, CDC, working with state public health departments... 

USMEF Statement on Colombia Fully Reopening to U.S. Beef

With the Colombian government recently lifting its ban on U.S. beef originating from states in which H5N1 was detected in dairy cows, the Export Library for Colombia has been updated to reflect restored access for beef from 14 states.

U.S. Meat Export Federation (USMEF) President and CEO Dan Halstrom issued the following statement:

On behalf of USMEF’s membership, I want to thank the U.S. government, and especially the teams at the USDA Animal and Plant Health Inspection Service (APHIS), Foreign Agricultural Service (FAS) and Food Safety and Inspection...

FSIS to Start H5N1 Beef Monitoring Sampling

On September 16, 2024, the FSIS will be adding H5N1 influenza A monitoring in dairy cows at slaughter to its already robust national surveillance programs for pathogens and chemical contaminants.

FSIS will leverage its existing National Residue Program (NRP) and conduct H5N1 sampling in the muscle samples of dairy cow carcasses already collected for this program. Samples will be tested by FSIS laboratory personnel using polymerase chain reaction (PCR) testing. Carcasses sampled under the NRP are held by establishments pending results of residue testing...

Study Confirms Mammal-to-Mammal H5N1 Spread

A new Cornell University study provides evidence that a spillover of avian influenza from birds to dairy cattle across several U.S. states has now led to mammal-to-mammal transmission – between cows and from cows to cats and a raccoon.

A new Cornell University study provides evidence that a spillover of avian influenza from birds to dairy cattle across several U.S. states has now led to mammal-to-mammal transmission – between cows and from cows to cats and a raccoon.

“This is one of the first times that we are seeing evidence...

USDA Issues FAQ on Federal Order Requiring Bird Flu Testing in Dairy Cattle

On Wednesday, the U.S. Department of Agriculture (USDA) announced a Federal Order requiring mandatory testing of lactating dairy cattle for bird flu before interstate movement. Effective Monday, April 29, 2024, the order also mandates reporting positive influenza A test results in livestock to USDA’s Animal & Plant Health Inspection Service (APHIS). 

Highly pathogenic avian influenza (HPAI) causes less severe illness in cattle than in poultry, in which the virus is typically fatal, but remains a concern for livestock and humans who come into contact with infected animals...

USDA Actions to Protect Livestock Health From Highly Pathogenic H5N1 Avian Influenza

To further protect the U.S. livestock industry from the threat posed by highly pathogenic H5N1 avian influenza, USDA is sharing a number of actions that we are taking with our federal partners to help us get ahead of this disease and limit its spread.

Today, USDA’s Animal and Plant Health Inspection Service (APHIS) announced a Federal Order requiring the following measures, effective Monday, April 29, 2024:

Mandatory Testing for Interstate Movement of Dairy Cattle

• Prior to interstate movement, dairy cattle are required to receive...

Cow-to-Cow Transmission Confirmed as a Factor in Spread of H5N1

In an update provided by the USDA, the agency confirmed that cow-to-cow transmission is a factor in the spread of H5N1 bird flu in dairy herds.

However, it remains unclear exactly how the virus is being moved around. “We know that the virus is shed in milk at high concentrations; therefore, anything that comes in contact with unpasteurized milk, spilled milk, etc. may spread the virus,” explained the USDA.

The government stressed the importance of biosecurity, including the movement of people, animals, vehicles, and...

USDA’s APHIS Answers Questions on Detection of HPAI in Dairy Cattle

Following the recent string of highly pathogenic avian influenza (HPAI) detections in dairy herds in several states, USDA’s Animal and Plant Health Inspection Service (APHIS) has answered some of the most frequently asked questions about the rapidly evolving situation.

As of Apil 3, 2024, six states have confirmed cases of HPAI in domestic livestock. The first confirmation was on March 25 in dairy milking cattle in Texas. Since then, Kansas, Michigan, New Mexico, Idaho, and Ohio have also reported HPAI in dairy cattle herds.

Below are some of the questions...

Second US Human Case of Avian Influenza H5N1 Linked to Dairy Cattle Exposure Confirmed

The United States has just confirmed a new case of a person testing positive for highly pathogenic avian influenza (HPAI) A(H5N1) virus in Texas, the country's second human case since a previous incident in Colorado in 2022. The patient had been exposed to dairy cattle presumed to be infected with H5N1, raising concerns amongst the livestock sector and related businesses. However, the Centers for Disease Control and Prevention (CDC) maintains the risk to the general public as low...

State Officials Report Human Case of Bird Flu in Texas, Second Ever in U.S. History

State officials Monday reported the first human case of avian influenza A(H5N1) in Texas, marking the second-ever human case of H5N1 flu, or HPAI, in the United States and the first tied to exposure to cattle. 

The individual in Texas had been in direct contact with dairy cattle thought to be infected with avian influenza. The person, who had testing performed by the Centers for Disease Control and Prevention (CDC) over the weekend, exhibited eye inflammation as their only symptom and is being treated with the antiviral drug oseltamivir. The risk to the general public remains low, said the Texas Department of State Health Services (DSHS)...