Swimming in a lake or warm body of water is a common summertime activity, but for Hally Yust, a nine-year-old girl from Kansas, her passion for swimming and water skiing turned deadly when she developed primary amoebic meningoencephalitis (PAM) due to Naegleria fowleri, an extremely rare brain-eating amoeba, WDAF-TV reports.

According to the Kansas Department of Health and Environment (KDHE), an investigation revealed that Hally came into contact with several sources of fresh water in Kansas, so the specific source of the infection cannot be identified.

KDHE says that this is the second known case of PAM caused by Naegleria fowleri in the Sunflower State. The first case took place in 2011.

“We are very saddened to learn of this unfortunate circumstance, and our thoughts and prayers are with the family and friends during this difficult time,” said Robert Moser, MD, KDHE Secretary and State Health Officer, in a statement. “It is important for the public to know that infections like these are extremely rare and there are precautions one can take to lower their risk – such as nose plugs.”

The Centers for Disease Control and Prevention notes that Naegleria fowleri is usually found in warm bodies of water and soil. The amoeba typically infects people when contaminated water enters the individual through the nose.

“We want you to know this tragic event is very, very rare and this is not something to be fearful about,” the Hally’s family said in statement obtained by WDAF-TV.