聖水
Holy water fonts have been identified as a potential source of bacterial and viral infection. In the late 19th century, bacteriologists found staphylococci, streptococci, coli bacilli, Loeffler's bacillus, and other bacteria in samples of holy water taken from a church in Sassari, Italy. In a study performed in 1995, 13 samples were taken when a burn patient acquired a bacterial infection after exposure to holy water. The samples in that study were shown to have a "wide range of bacterial species", some of which could cause infection in humans. During the swine flu epidemic of 2009, Bishop John Steinbock of Fresno, California, recommended that "holy water should not be in the fonts" due to fear of spreading infections. Also in response to the swine flu, an automatic, motion-detecting holy water dispenser was invented and installed in an Italian church in 2009. In 2020, because of the COVID-19 pandemic, Episcopal Conferences directed that holy water be removed from the fonts or stoups.