Bird Flu Vaccine Stocks: 8 Companies Developing H5N1 Vaccines

2025-03-12 16:15:00 ET

Life science companies developing bird flu vaccines are gaining attention as the avian influenza subtype H5N1 becomes an increasing concern.

The United States is in the midst of an H5N1 bird flu outbreak that began in February 2024 and is now threatening the nation’s poultry and cattle industries. With poultry farmers across the US needing to cull their flocks if the virus is detected to prevent it spread, egg prices are shocking shoppers at the country’s grocery stores. Highly pathogenic avian influenza (HPAI) has also spread to cattle and other mammals , including cats.

Human avian influenza cases have so far been rare during this outbreak in the US, as currently the virus is only spread to humans through exposure to infected animals. As of February 27, 2025, 67 human cases have been detected in the country, and one death has been reported . However, concerns such as the possibility of mutations that could increase the chance of human-to-human transmission are stoking calls for better preparedness and access to bird flu vaccines.

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