Leptospirosis is a bacterial infection caused by bacteria within the genus Leptospira.  It is a widespread disease that can be contracted via direct contact with infected animal urine, or by ingesting water or food infected with the bacteria.  Most cases result in symptoms similar to influenza, but some extreme cases can be fatal.  The Black Berkey® Purification Elements have been tested to reduce Leptospira bacteria by 99.6% or higher at contamination levels much higher than found in nature.  More information on Leptospirosis and details on our test results can be found on this article.