Broiler chickens are seen eating at a U.S. farm. Colorado officials report that six poultry workers have contracted H5N1 bird flu. (Reuters)
The U.S. Centers for Disease Control and Prevention (CDC) reported on Friday that two more poultry farm workers in Colorado have tested positive for H5N1 bird flu. This comes after the state had already confirmed four infections and was investigating a fifth suspected case.
These new infections were found among workers who had direct contact with infected birds during activities related to the culling and disposal of poultry. This bird flu outbreak, known as H5N1, has been spreading not just among wild birds, but also affecting poultry and various mammals worldwide.
In response to the outbreak, the CDC sent a team of nine experts to Colorado. This team includes epidemiologists, veterinarians, clinicians, and an industrial hygienist, all tasked with assessing the situation and supporting the state’s efforts to manage the outbreak and its impact on humans.
Despite these new cases, the CDC maintains that the overall risk to human health remains low. Their analysis of the virus's genetic makeup supports this conclusion. The agency is closely monitoring the situation to ensure that the risk does not escalate.
In addition to the Colorado outbreak, there has been ongoing research into how H5N1 affects humans. Last month, Michigan health officials conducted a study involving workers who had been around cows infected with the bird flu. They tested blood samples from 35 individuals to check for evidence of past infections. However, none of the tests showed signs of previous exposure to the virus.
The CDC notes that while these findings are reassuring, more research is needed to fully understand the risks associated with exposure to the H5N1 virus, especially in occupational settings. They continue to monitor the situation and gather data to better assess the potential health risks.
