Colorado health authorities reported the first U.S. case of a type of bird flu called HPAI H5 as the country battles a wider bird flu epidemic across farms.
The CDC announced that the one case does not change the human risk assessment for the general public, which is "low" at this time.
The five-year-old boy was confirmed as the first case of human transmission on April 26 after falling ill three weeks earlier.
Almost 23 million birds have been killed in the U.S. this year because of the outbreak, according to the U.S. Department of Agriculture.
Once the virus is detected in an animal, its entire flock is culled in order to prevent the disease from spreading.
The highly infectious avian flu has been found in backyard and commercial poultry flocks, including broiler chickens and turkeys in 17 states.
French officials said Tuesday that millions of birds across the country have been infected and had to be killed during the last several months.
The state is seeing its first avian flu outbreak since 2015. The disease was first detected in turkeys at two animal feeding facilities.
Avian flu has been detected in commercial and backyard flocks in 12 states, including New York, Michigan, Illinois and Kansas.
Avian flu has been detected in backyard flocks in Michigan, Maine, Virginia, and New York, with keepers who interact with birds at greatest risk of infection.
Avian influenza has been detected in poultry flocks as well as wild birds since January. Experts tell Newsweek what the risk is to humans.
The highly infectious avian influenza has now been reported in commercial and backyard birds in six states, and in wild birds in 10 states.
The detection of bird flu in a backyard flock of birds in New York is the latest in an ongoing spate of cases also involving turkeys and broiler chickens.
The detection of the virus in a flock of broiler chickens follows the destruction of 29,000 turkeys in Indiana and widens the current U.S. avian flu outbreak.
Two new outbreaks were reported just days after the U.S. ordered nearly 30,000 turkeys to be euthanized for testing positive for the disease.
Workers were removing bird carcasses as fast as they could, as there are concerns they would potentially infect other wildlife, said Yaron Michaeli.
The flu virus can cause widespread deaths amongst bird populations and make people very sick in the rare cases when it spreads to humans.
China's national health authority said the patient was ready to be discharged, while the H10N3 strain of avian influenza was not likely to cause a large-scale outbreak.
An investigation to determine the source of the outbreak is underway, as health officials say the birds will be "humanely culled."
"It was terrible to see," said swan rescuer Caroline Sim.
China is currently the epicenter of an outbreak of the new 2019-nCov virus.
The 73,500 birds will be culled to prevent the virus from hitting the food system.
Wild birds that spread the virus will very likely carry it when they begin migrating south in the fall.
Birds were dying in greater than normal numbers at the breeding farm.
Report details numerous accidents at labs handling potentially dangerous viruses