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CDC Warns of New ‘Cow Flu’ Outbreak

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CDC Issues Alert Over ‘Cow Flu’ Outbreak in U.S.

The Centers for Disease Control and Prevention (CDC) has sounded the alarm about a rising number of cases of ‘cow flu,’ scientifically known as the H5N1 bird flu, now spreading among cattle in the U.S. New data suggests that the virus is infecting more farm workers than initially anticipated, prompting the CDC to update its testing and prevention guidelines.

Surge of H5N1 Virus Among Cattle

Traditionally seen in birds, the H5N1 virus has now made its way to cows, leading to outbreaks at hundreds of cattle farms across 15 states since March. The U.S. Department of Agriculture (USDA) reported nearly 450 dairy farms have been impacted, raising concerns about a potentially uncontrolled spread.

In a recent CDC investigation, 115 farm workers from Michigan and Colorado who had been exposed to the virus were tested. Surprisingly, eight of these individuals tested positive, indicating an infection rate of approximately 7%. Notably, many of the infected workers showed no symptoms, suggesting the virus might be spreading more broadly than reported cases reflect.

Silent Spread Raises Alarms

Among the eight positive cases, half did not exhibit symptoms, which has concerned health officials. Asymptomatic infections make it difficult to trace the virus accurately. The CDC is now advising that anyone exposed to infected animals undergo testing, regardless of whether they show symptoms.

Researchers have found high levels of the H5N1 virus in the milk of infected cows, increasing the risk of exposure. This discovery has led the USDA to initiate bulk milk testing for bird flu, demonstrating rising apprehension about the virus’s impact on dairy and poultry farms alike.

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Enhanced Safety Measures

The CDC has revised its guidelines to better protect farm workers amid the outbreak. The updated recommendations urge all workers in close contact with infected cattle to use protective gear like masks and eye protection. Additionally, the antiviral drug Tamiflu is advised for those at high risk of exposure to help prevent the virus from spreading.

However, efforts to monitor the virus effectively have been hampered by obstacles, including the reluctance of farm owners and employees to allow testing. Health experts have criticized this hesitation, noting that swift and widespread testing is essential to prevent a potential pandemic.

Mutation Fears on the Rise

Although the CDC has not observed any mutations in the H5N1 virus that could make it easier to spread among humans, infectious disease specialists warn of the growing risks. Dr. Gregory Gray from the University of Texas Medical Branch indicated that the CDC’s recent actions reflect a heightened concern over the virus’s threat.

“This move suggests the CDC now sees H5N1 as posing a greater risk than previously thought,” Dr. Gray said. The spread of the virus across different animal species increases the likelihood of mutation, which could lead to a severe outbreak or even a pandemic.

Last week, a pig on an Oregon farm tested positive for H5N1, the first such case in the U.S. Infection in pigs is particularly alarming since swine have been a source of previous human pandemics, highlighting the virus’s potential to jump species and mutate dangerously.

Criticism of Response

Experts like Angela Rasmussen from the University of Saskatchewan have criticized the federal response to the outbreak, describing it as too slow and lacking urgency. “These studies should have been conducted months ago and prioritized,” Rasmussen noted, warning that allowing H5N1 to spread unchecked across species could have serious consequences.

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CDC’s principal deputy director, Nirav Shah, emphasized the importance of the updated recommendations: “These measures aim to keep workers safe, limit H5N1 transmission to humans, and reduce the risk of virus mutation,” Shah explained.

The Need for Vigilance

The CDC’s updated testing and protection recommendations underscore an urgent call for increased monitoring of the H5N1 outbreak. With silent transmission occurring and the potential for dangerous mutations looming, health agencies are pushing for enhanced preventive actions to protect farm workers and the broader public.

As the virus continues to spread across several states, experts stress the need for prompt action to prevent it from becoming a larger public health threat. The ongoing outbreak highlights the critical need for rapid testing, better protective measures, and a coordinated response to address this emerging ‘cow flu’ risk effectively.

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