What is the leading cause of human Brucellosis in California?

The leading cause of human Brucellosis in California is indeed Brucella melitensis. This specific strain is primarily associated with transmission from sheep and goats to humans. Its prevalence in these livestock species makes it a significant public health concern, especially in areas where these animals are commonly raised and handled. Brucella melitensis is known for causing severe illness in humans, characterized by fever, sweats, malaise, and weight loss, making it a critical pathogen for public health authorities to monitor.

In California, the increased risk for human infection is often linked to unpasteurized dairy products and direct contact with infected animals, which facilitates the transmission of the bacteria to people. Hence, public health guidelines emphasize the importance of proper animal vaccination and the consumption of pasteurized dairy products to mitigate the risk of Brucellosis caused by this bacterium. Understanding the specific strains responsible for human disease is vital for effectively combating and preventing outbreaks, particularly in regions like California, where agriculture plays a significant role in the economy and lifestyle.