[Source – npr.org]
Two dairy workers in California tested positive for H5 Bird flu cases, marking the latest human cases in the U.S. as the infection continues to spread. The Centers for Disease Control and Prevention (CDC) and the California Department of Public Health confirmed these infections and assured that the cases were unrelated, as the individuals worked at different dairy farms in California’s Central Valley.
The CDC is actively collaborating with state health officials in California and across the nation to curb the transmission of H5N1 from infected animals to humans. Despite the recent infections, the agency emphasized that the risk to the general public remains low.
Unrelated Infections and Mild Symptoms
The two dairy workers experienced mild symptoms, with both reporting conjunctivitis (eye redness) but no respiratory issues. Neither worker required hospitalization, according to officials.
Though the virus is spreading among animals, the human cases have been described as “rare, sporadic infections.” The CDC and other health authorities are keeping a close eye on those who work directly with infected animals, such as dairy and poultry workers, where exposure risk is higher.
“The virus is widespread in wild birds and has caused ongoing outbreaks among poultry in the United States since 2022,” the CDC stated.
2024 Bird Flu Infections across the U.S.
In 2024, there have been 16 confirmed human bird flu cases across several U.S. states, including the two most recent infections in California. The breakdown of reported cases is as follows:
- Texas – 1 case
- Michigan – 2 cases
- Colorado – 10 cases
- Missouri – 1 case
- California – 2 cases
Six of the 16 human cases have been linked to exposure to infected dairy cows, while nine other cases were tied to exposure to infected poultry.
While infections remain relatively uncommon, health officials are encouraging vigilance, particularly among those who work with animals susceptible to bird flu. The virus continues to circulate in wild birds, increasing the likelihood of spillover into domestic livestock.
CDC Recommendations for Prevention
In light of the recent cases, the CDC has reiterated safety guidelines for those working with animals that may be infected with H5N1. The agency advises avoiding direct contact with wild birds, sick, or dead animals. In particular, individuals should refrain from consuming unpasteurized milk or raw cheese, which could be contaminated with the virus.
For workers in the dairy and poultry industries, the CDC strongly recommends wearing personal protective equipment (PPE) when in close proximity to animals, raw milk, or contaminated surfaces. PPE can help reduce the risk of infection by limiting exposure to potentially virus-laden materials.
Additionally, the CDC advises anyone who becomes ill after interacting with infected animals to immediately contact their local health department and a healthcare provider for testing. Symptoms of bird flu include:
- Eye redness (conjunctivitis)
- Mild flu-like respiratory symptoms
- Fever, cough, sore throat
- Difficulty breathing
- Runny or stuffy nose
- Muscle aches
Keeping the Public Safe
While bird flu cases remain largely confined to those who have direct contact with infected animals, the CDC is monitoring the situation closely. The ongoing outbreaks among wild birds and poultry indicate that the virus is still prevalent, and health authorities are prepared to respond to any further developments.
For now, public health officials stress that the risk to the wider population remains minimal, but caution is warranted for those working in high-exposure environments. By following the CDC’s safety recommendations and reporting any symptoms promptly, the risk of transmission can be further minimized.
Also read: Emergency Declared in Colorado After Bird Flu Outbreak at Egg Facility
