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Human cases of bird flu have been confirmed to be occurring undetected in the United States. This alarming news has raised concerns about the potential risks posed by the highly pathogenic avian flu to public health and safety.
Recent studies have revealed that cases of the highly pathogenic avian flu have been undetected in humans, as evidenced by blood samples from 115 dairy workers in Michigan and Colorado. Antibodies from the extremely virulent strain of H5N1 were detected in the blood of 7% of individuals who were tested between June and August 2024 by researchers from the US Centers for Disease Control and Prevention (CDC).
While the majority of individuals who tested positive for avian flu antibodies did not report feeling unwell, researchers are still apprehensive about the virus’s potential to mutate into more lethal variants. Despite the current low risk to public health, the unchecked spread of the virus could lead to increased danger in the future.
In Cambodia, the virulence of the avian flu has taken a deadly turn, resulting in the deaths of at least three patients. This strain of avian flu, which was transmitted from poultry, is a hybrid between different subtypes and contains mutations that make it more transmissible to humans.
Fortunately, the Cambodian outbreak has been contained, and human-to-human transmission has not been identified. However, the recent disclosure of Canada’s first human case of bird flu underscores the ongoing threat posed by the virus. The patient, an adolescent, is currently in critical condition and has a mutated strain of the virus that was identified in the US dairy cattle outbreak.
The discovery of a human case of avian flu with no known animal origin raises concerns about the possibility of person-to-person transmission. This highlights the importance of continued monitoring and surveillance to prevent further outbreaks and manage existing cases effectively.
The CDC is closely monitoring the situation in the United States, where over 400 dairy herds have been infected with the highly virulent avian flu. The spread of the virus among animals underscores the need for increased awareness and prevention measures among workers who come into contact with infected animals.
The recent report by CDC health scientist Alexandra Mellis and her colleagues emphasizes the importance of using personal protective equipment (PPE) when working with infected animals. They stress the need for enhanced outreach to employers and employees, particularly those who may be Spanish speakers, to address the risks associated with avian flu infection.
Authorities worldwide are urging individuals to report any signs of illness or death in birds and to practice good hygiene when interacting with animals. Recognizing the symptoms of avian flu in animals, such as drowsiness, lack of coordination, and unusual behavior, is crucial for early detection and prevention of further spread.
In the United States, the avian flu has led to the culling of over 90 million domestic birds since 2022. Efforts are underway to protect endangered species like the California condor through vaccination programs, but the threat to wildlife and humans alike remains a concern.
As researchers work to develop a human vaccine for avian flu, it is essential for individuals and communities to remain vigilant and follow guidelines to prevent the spread of the virus. By staying informed and taking precautions, we can help minimize the risks associated with this potentially deadly disease.
