18 cases of legionella, waterborne bacteria, found at Kaiser Santa Clara hospital

Key Points:

• Santa Clara County Public Health is investigating a legionella outbreak at Kaiser Permanente’s Santa Clara Medical Center, with at least 18 people infected by the bacteria commonly found in water systems.
• The risk to the broader South Bay community is considered low, and most exposed individuals do not become ill, according to public health officials.
• Kaiser Permanente has not yet identified the source of the bacteria but has implemented additional water treatment and preventive measures to ensure safety while the hospital continues normal operations.
• Legionella bacteria cause Legionnaires’ Disease, a severe pneumonia with symptoms like shortness of breath and chest pain, primarily affecting older adults and those with weakened immune systems; the disease has a fatality rate of 10%, rising to 25% in healthcare settings.
• Public health authorities emphasize that Legionnaires’ Disease is treatable with antibiotics and that Kaiser Permanente has complied with all regulatory standards to manage and prevent the outbreak.