Possible Zombie Cover-Up?

Brain-eating Lake Amoeba Kills 6 Boys in US

A killer amoeba that thrives in warm-water lakes, enters the body through the nose, then feeds on a victim's brain until they die has caused the deaths of six boys and young men in America this year.

And even though encounters with the microscopic death-dealer are extraordinarily rare,the dramatic increase in cases has health officials predicting more cases in the future because of global warming.

"This is definitely something we need to track," said Michael Beach, a specialist in recreational waterborne illnesses for the Centers for Disease Control and Prevention. "This is a heat-loving amoeba. As water temperatures go up, it does better. In future decades, as temperatures rise, we'd expect to see more cases."

The amoeba called Naegleria fowleri (nuh-GLEER-ee-uh FOWL’-erh-eye) killed 23 people in the United States, from 1995 to 2004, according to the CDC. This year health officials noticed a spike with six cases — three in Florida, two in Texas and one in Arizona. The CDC knows of only several hundred cases worldwide since its discovery in Australia in the 1960s.

Though infections tend to be found in southern states, Naegleria lives almost everywhere in lakes, hot springs, even dirty swimming pools, grazing off algae and bacteria in the sediment.

Beach said people become infected when they wade through shallow water and stir up the bottom. If someone allows water to shoot up the nose — say, by doing a somersault in chest-deep water — the amoeba can latch onto the olfactory nerve.

The amoeba destroys tissue as it makes its way up into the brain, where it continues the damage, "basically feeding on the brain cells," Beach said.

People who are infected tend to complain of a stiff neck, headaches and fevers. In the later stages, they'll show signs of brain damage such as hallucinations and behavioral changes, he said. Once infected, most people have little chance of survival.