US Reports Fourth Human Case of Bird Flu Linked to Cows

Jul 05, 2024

US officials on Wednesday reported the country's fourth human case of bird flu linked to the current outbreak of the virus in dairy cattle.

As with previous cases, the person worked on a farm and was exposed to infected cows, the US Centers for Disease Control and Prevention (CDC) said in a statement, adding that the risk to the general population remained "low."

The infection occurred in Colorado and the affected person only had eye symptoms, was given antiviral medication, and has since recovered, it said.

A first US infection in the southern state of Texas was announced on April 1. Two other cases were subsequently reported in Michigan.

Numerous herds of cows are infected across several American states, an epidemic which was first detected in March.

Experts are concerned about the growing number of mammals infected with the disease, although cases in humans remain rare.

They fear that high circulation could facilitate a mutation of the virus which would allow it to pass from one human to another.

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Video: Five Confirmed New World Screwworm Cases Raise Alarm for Livestock and Pet Owners

Pat Hoffmann, Swine Technical Consultant at Elanco Animal Health tells us about the impact of New World Screwworm. The emergence of New World screwworm in the U.S. creates a threat for veterinarians, livestock producers and pet owners that has not been seen north of the Florida Keys since the fly was eradicated from the United States more than 50 years ago. New World screwworm (Cochliomyia hominivorax) larvae feed on living tissue and can affect a wide range of warm-blooded animals, including livestock, companion animals, wildlife, and even humans.
“New World screwworm could have a devastating impact on animal health, welfare, and producer livelihoods,” said Jeff Simmons, President and CEO, Elanco Animal Health. “We want to thank the FDA, EPA and USDA, for all their work to prepare for this threat. We’re committed to supporting our customers during this challenging time by delivering innovation, scientific expertise, and available resources to help treat New World screwworm and support the health and well-being of animals.”
Elanco is working alongside the U.S. animal health industry to help them fight against this parasite, offering a portfolio of options for pets and livestock that can help treat New World screwworm larvae infestations.