Avian influenza (H5N1), or bird flu, is a highly contagious virus that primarily affects birds but has recently mutated more quickly and spread more aggressively enhancing its ability to infect a wider range of species. Bird flu has adapted to impact mammals, including cattle, felines, raccoons, and sea lions, signaling its potential to cause a broader health crisis.
One of the most concerning developments is bird flu’s impact on cattle. Infections have been reported in over 950 herds across 16 states, with reinfections in Idaho cattle farms demonstrating the virus’s ability to persist and evolve. These newer mutations raise concerns about bird flu’s ability to spread from cattle to humans.
Scientists worry that further mutations of bird flu could enable increased transmission from human to human. A recent study found that a single mutation significantly increased the virus’s ability to infect human cells. While human infections remain relatively rare, 70 cases of H5N1 have been reported, with one fatality. Most cases present mild symptoms like eye redness, low fever, cough, and muscle aches. However, severe cases—including symptoms of high fever, respiratory distress, altered consciousness, and seizures—have been documented. Symptoms typically appear between 2 to 7 days after exposure. The exact duration of contagiousness remains unclear, though individuals are believed to be most contagious during the early stages, with severe cases potentially contagious for several weeks.
The impact of the bird flu is already being felt in the U.S., particularly in the egg industry, where outbreaks have led to major production losses and price spikes. However, the country’s ability to respond has been weakened by cuts made during the Trump administration, which undermined pandemic preparedness. Key public health programs were scaled back, and the Centers for Disease Control and Prevention (CDC) recently lost one-tenth of its workforce, including staff in the Epidemic Intelligence Service, which monitors disease outbreaks. The National Institute of Health (NIH) also suffered cuts, losing 1,500 employees. Additionally, a Trump-era policy restricting public communications from health agencies delayed the release of crucial information regarding the bird flu outbreak by several weeks.
These federal cuts have left the U.S. vulnerable, with fewer experts monitoring potential outbreaks and limited stockpiles of antiviral medications and vaccines. While a federal stockpile of bird flu vaccines exists, experts warn that they may be outdated and insufficient for large-scale immunization.
Beyond public health concerns, the bird flu outbreak has significant economic and policy implications. The bipartisan Healthy Poultry Assistance and Indemnification Act (HPAI Act), introduced by Senators Chris Coons and Roger Wicker, aims to provide fair compensation to poultry farmers. The HPAI Act seeks to expand compensation to all affected farms with confirmed infections to include all affected farms in control areas, ensuring equitable relief and strengthening the poultry supply chain.
Regulatory agencies are responding to emerging threats as well. The FDA, under the Food Safety Modernization Act, now requires pet food manufacturers to reassess safety plans for products containing raw poultry or dairy due to bird flu contamination risks.
Continued collaboration between the USDA, FDA, and CDC remains essential to mitigate risks to both human and animal health. Despite these efforts, administrative failures continue to hinder preparedness. The USDA recently admitted to mistakenly firing key employees involved in the avian flu response, exacerbating concerns about the federal government’s ability to manage the outbreak effectively.
The warning signs of another potential pandemic are evident. The U.S. cannot afford to repeat past mistakes—delays in data, inadequate testing, and slow government response, all echoes of the COVID-19 crisis, are already emerging. Without swift action to restore pandemic preparedness, enhance disease surveillance, and improve public communication, the nation is vulnerable to another health crisis.