Cases of H5N1 bird flu are increasing rapidly in poultry farms across the United States. According to the latest federal data, 1.32 million birds have been infected with the virus in the past month.

The largest outbreak of the virus has been recorded in Clinton County, Illinois, where 934,600 chickens have been reported to be sick.

In addition, large-scale outbreaks of bird flu have also been reported in the states of Minnesota, Wisconsin and North Dakota.

According to the US Department of Agriculture tracker, 57,000 birds have been infected at a turkey farm in Roseau County, Minnesota, while 60,600 birds have been infected at a farm in North Dakota and 41,400 birds have been infected at a poultry farm in Wisconsin.

In the past, bird flu outbreaks in egg-laying chicken farms have led to the culling of large numbers of infected birds, which has led to a significant increase in egg prices in the United States.

Bird flu has not been limited to poultry farms, but the virus has also been reported to have killed farm workers and some people who came into contact with infected animals.