ECO Animal Health Group plc (AIM: EAH), a rapidly growing global animal health company with a portfolio of marketed veterinary products and a maturing proprietary R&D pipeline, announces that the United States Department of Agriculture (USDA) has delivered a favourable safety assessment of ECOVAXXIN® MG, the Company’s live poultry vaccine targeting Mycoplasma gallisepticum.

The USDA’s review and acceptance of the Company’s ECOVAXXIN® MG safety data represents an important step towards securing marketing authorisation for the vaccine in the United States. The comprehensive risk assessment confirms that ECO meets the USDA’s rigorous safety standards, with final regulatory submission for ECOVAXXIN® MG currently anticipated in late 2027.

As part of the US registration requirements, ECOVAXXIN® MG was demonstrated to be safe not only for the target species (chickens) but also for non-target avian species including turkeys and quails. Importantly, the strain did not revert or increase in virulence after passage through chickens, confirming its stability.

Mycoplasma gallisepticum is a bacterial pathogen responsible for chronic respiratory disease in chickens and infectious sinusitis in turkeys. The live strain of the bacteria used for ECOVAXXIN® MG is a naturally attenuated isolate shown to be safe for young chicks.

David Hallas, Chief Executive Officer of ECO Animal Health, said: “ECO is building a robust product portfolio to provide the poultry industry with safe and effective new vaccines against Mycoplasma infection. ECOVAXXIN® MS represented the Company’s first step toward expanding its range of innovative vaccines across priority markets, with commercial launch expected later in 2026.

“ECOVAXXIN® MG’s strong safety profile builds further positive momentum in our R&D pipeline. The favourable risk assessment underlines that the product meets the USDA’s high safety benchmarks and represents a significant milestone towards US marketing authorisation.”

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