With Nebraska reporting its first case of highly pathogenic avian influenza (H5N1) in dairy cattle last month, officials in three Midwestern states have now confirmed new outbreaks of H5N1 in poultry on commercial farms. While not the first for these states, the latest detections highlight the ongoing presence of the virus. In Iowa, this marks the state’s eighth outbreak in domestic birds this year, and Minnesota has reported eight poultry outbreaks since mid-September.H5N1 Strikes Poultry Farms Across USThe Iowa Department of Agriculture and Land Stewardship (IDALS) and the US Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) confirmed the latest H5N1 case on October 2. Officials discovered the virus in a commercial turkey flock in west-central Iowa. Iowa’s previous poultry outbreak was recorded in April.Minnesota reported two outbreaks on September 28 at commercial breeder poultry farms in Becker and Otter Tail Counties, which are adjacent to one another in the state’s west-central region. Together, the two farms house over 36,000 birds, according to the University of Minnesota.Wisconsin followed with another confirmation on October 1 of H5N1 in a commercial flock in Jefferson County, located between Madison and Milwaukee. The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) issued guidance urging all livestock owners to strengthen biosecurity measures to prevent the virus from spreading to their animals.What Is H5N1?H5N1 is a highly pathogenic strain of avian influenza, commonly called bird flu, which primarily infects birds but can also spread to humans and other mammals through close contact with infected animals or contaminated environments. While human-to-human transmission is uncommon, the infection can be severe and has a high mortality rate. The virus has spread worldwide among wild birds and poultry and has recently been detected in mammals, including dairy cows. Health authorities recommend avoiding raw milk and taking protective measures when handling animals, according to the World Health Organization.Can H5N1 Affect Humans?Yes, H5N1 can infect humans, causing symptoms such as eye irritation, respiratory problems, and gastrointestinal issues. Although transmission between humans is rare, those who have direct contact with infected birds, mammals like dairy cows, or contaminated environments are at higher risk, per WHO guidelines.How Humans Get InfectedContact with infected animals: Handling sick or deceased poultry, wild birds, or dairy cows can lead to infection.Contaminated surfaces: Touching surfaces contaminated with virus-containing fluids from infected birds or animals and then touching your eyes, nose, or mouth.Contaminated food: Consuming raw milk from infected cows or other foods contaminated with the live virus.Is Bird Flu Contagious?Bird flu rarely spreads from person to person. While a few cases of human-to-human transmission have been documented, none occurred in the U.S. Nearly all human infections so far have resulted from direct contact with infected animals. Still, any human infection carries a risk that the virus could mutate and spread more easily between people.
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