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The U.S. Department of Agriculture (USDA) has recently approved the initial field safety trial for a bird flu vaccine aimed at dairy cattle. This decision comes as industry representatives urge the Biden administration to take timely action to manage the escalating outbreak.

During his address at the Farm Progress Show held in Boone, Iowa, Agriculture Secretary Tom Vilsack described the field trial as “a significant step forward” in vaccine development. He mentioned that multiple companies have been engaged in vaccine research, and the USDA sanctioned the trial based on adequate information provided by one firm.

While specific details about the trial have not been disclosed, advancements in creating a vaccine against H5N1 avian influenza could be crucial in mitigating the risk of animal-to-human transmission and in preserving livestock numbers. Since April, thirteen individuals have tested positive for bird flu, a virus that has severely impacted poultry populations and has spread to numerous dairy herds, with indications that the number could be higher.

Initially, some farm sectors expressed skepticism about vaccination as a viable strategy for controlling bird flu, citing worries regarding vaccine effectiveness and potential trade implications. Many trading partners have been hesitant to accept vaccinated animals due to fears that the vaccines might mask infections. This concern has significantly influenced delays in securing vaccine approvals for poultry.

However, as the outbreak’s severity escalates, the agricultural community appears to be reassessing its stance on vaccination. Earlier this month, producers from dairy, egg, and turkey sectors sent a letter to Vilsack advocating for the expedited approval of vaccines for both cattle and poultry.

“As this outbreak … continues to progress, it is clear that a new approach is needed,” stated a letter co-signed by representatives from the International Dairy Foods Association, the National Milk Producers Federation, the National Turkey Federation, and United Egg Producers.

At the Farm Progress Show, Vilsack highlighted that overcoming trade barriers related to the rollout of an animal vaccine is likely to be more manageable for the dairy industry than for poultry. He emphasized that dairy cows are routinely vaccinated against various diseases without causing trade issues.

Vilsack acknowledged that the primary challenge in developing vaccines for poultry and dairy is ensuring they are both effective and safe. Existing poultry vaccines either offer limited protection or complicate the ability to differentiate between vaccinated and infected birds.

“We will keep engaging with our trade partners to dismantle the existing barriers,” Vilsack remarked, indicating that as soon as an effective vaccine for chickens and turkeys is available, the USDA will be ready to implement it.

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