Climate Change Spreads Disease Worldwide

Climate change is affecting the spread of infectious diseases worldwide — posing serious threats to not only humans, but also animals and plants, a team of international disease ecologists write in the journal Science.

Public health officials should change the way they model disease systems of all kinds to include climate variables, researchers argue. Taking climate into account could help more accurately predict and prevent the spread of deadly disease.

Mystery Disease In Central America Kills Thousands

CHICHIGALPA, Nicaragua -- Jesus Ignacio Flores started working when he was 16, laboring long hours on construction sites and in the fields of his country's biggest sugar plantation.

Three years ago his kidneys started to fail and flooded his body with toxins. He became too weak to work, wracked by cramps, headaches and vomiting.

On Jan. 19 he died on the porch of his house. He was 51. His withered body was dressed by his weeping wife, embraced a final time, then carried in the bed of a pickup truck to a grave on the edge of Chichigalpa, a town in Nicaragua's sugar-growing heartland, where studies have found more than one in four men showing symptoms of chronic kidney disease.

A mysterious epidemic is devastating the Pacific coast of Central America, killing more than 24,000 people in El Salvador and Nicaragua since 2000 and striking thousands of others with chronic kidney disease at rates unseen virtually anywhere else. Scientists say they have received reports of the phenomenon as far north as southern Mexico and as far south as Panama.

Last year it reached the point where El Salvador's health minister, Dr. Maria Isabel Rodriguez, appealed for international help, saying the epidemic was undermining health systems.

Wilfredo Ordonez, who has harvested corn, sesame and rice for more than 30 years in the Bajo Lempa region of El Salvador, was hit by the chronic disease when he was 38. Ten years later, he depends on dialysis treatments he administers to himself four times a day.

"This is a disease that comes with no warning, and when they find it, it's too late," Ordonez said as he lay on a hammock on his porch.