A dairy worker in Nevada might have caught a new version of bird flu. This strain, called D1. 1, has been making people sick and has even caused one death. The worker had pink eye, a common symptom of H5N1 bird flu.

        The Centers for Disease Control and Prevention (CDC) is still checking to confirm if the worker really has the virus. So far, 67 people have been infected with H5N1 bird flu. Most of these people caught it from infected animals, like dairy cows or poultry. In some cases, the source of the infection is still unknown.

        This news comes after reports that four dairy herds in Nevada had the D1. 1 strain. This strain is different from the one that has been spreading in dairy herds across the country. The virus has been changing, and scientists are trying to figure out how it's spreading. There have been massive bird die-offs in the area, which could be related.

        The U. S. Department of Agriculture found that the D1. 1 strain in Nevada has genetic changes that make it easier for the virus to copy itself in mammals, including humans. This is concerning, as it means the virus could potentially spread more easily among people.

        Experts are unsure why some people get really sick from the virus while others only have mild symptoms. One theory is that the B3. 13 version of the virus is less dangerous than D1. 1. However, this is still just a theory and needs more research. Some people have even had mild symptoms after exposure to D1. 1. The experts say it is important to treat each infection with caution and work to prevent future infections.

        The National Milk Testing Strategy, a program operating in 40 states, including Nevada, requires testing of all raw milk destined for pasteurization. This program has helped discover the virus in Nevada dairy herds.

        The virus was not observed in the cattle before detection, but symptoms have been reported since. This shows that the virus is getting better at infecting more people with improved genomic adaptations. The risks have grown greatly, and experts are calling for rapid isolation, sequencing, and analysis as well as a new vaccination and therapeutics effort.

Bird Flu on the Move: A Dairy Worker's Close Call

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