According to the CDC the amoeba called Naegleria fowleri killed 23 people in the United States from 1995 to 2004. This year health officials noticed a spike with six cases.

• CDC指出，从1995至2004年，被称为福氏耐格里阿米巴的原虫在美国造成23人死亡。卫生官员注意到今年案例增加，有6个死亡案例。