4 Are amoebas in still, warm, water more deadly than leeches?
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'Brain-eating' amoebas are a new concern in northern US states, health officials advise
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By
Nicoletta Lanese
published about 19 hours ago
Ohio public health officials raise concern about brain-eating amoeba in northern states.
This "brain-eating" amoeba has started infecting more people in northern U.S. states in recent years, due to climate change. (Image credit: KATERYNA KON/SCIENCE PHOTO LIBRARY)
Deadly "brain-eating" amoeba infections usually strike people in southern U.S. states, but thanks to
climate change, the brain-invading organism has expanded its range northward. In light of this trend, the Ohio Public Health Association recently published a case report to raise awareness of the disease among health care providers in the state.
"Increased incidence of
N. fowleri [a species of brain-eating amoeba] in northern climates is but one of many ways climate change threatens human health and merits novel education of health care providers," the case report authors wrote in a paper published May 16 in the
Ohio Journal of Public Health.
Naegleria fowleri is a single-cell organism that typically lives in soil and warm fresh water, as well as the occasional water tank, heater or pipe, according to the
Centers for Disease Control and Prevention (CDC). In rare instances, the amoeba can infiltrate the human brain and spinal cord by first entering a person's nose — but it cannot reach the brain if swallowed in a gulp of water, for instance, and it doesn't spread between people.
N. fowleri causes an infection called
primary amebic meningoencephalitis (PAM), which is nearly always fatal.