At least seven cases of cholera in Germany and the UK have been linked to the use of water from a popular “holy well” in Ethiopia, which happened to be contaminated with Vibrio Cholerae bacteria.

In February of this year, European authorities were on high alert regarding a cholera outbreak after three people in Germany and four in the UK fell ill with the contagious disease. A quick investigation found that two of the German patients and three of the UK patients had traveled to Ethiopia a month prior, and some of them visited a holy well called Bermel Giorgis in the African country’s Quara district. Named after Saint George, Bermel Giorgis is considered a holy site by members of the Ethiopian Orthodox Tewahedo Church who drink the water and wash their faces with it to benefit from its supposed healing properties. The European visitors reportedly did the same, and the German travelers and at least one of the UK visitors brought some holy water back with them and shared it. Before long, they started exhibiting symptoms like watery diarrhea and vomiting.