Got Dengue Fever? Blame Climate Change

By Travis Martinez – University of New Mexico/Talk Radio News Service

As if melting glaciers, higher sea levels and unpredictable weather weren’t enough, because of global warming, the human race faces the potential spread of infectious diseases. A panel of climate experts on Monday discussed the possibility of this occurring in North America.

“Climate change will likely alter the current distribution of vectors and/or pathogens,” said Mary Hayden, a scientist with Centers for Disease Control. “Two major climate factors that promote the reproduction of infectious mosquitos are precipitation and temperature.”

Hayden predicts that by 2050, Aedes aegypti, the yellow fever mosquito, will likely migrate from areas in Mexico to U.S. cities along the Eastern seaboard. Additionally, outbreaks of Dengue fever have already been reported in Key West, Florida.

“Unfortunately, we’re seeing that Dengue Fever is increasing in number and severity. In Mexico alone, since 2005, there has been a 600 percent increase in cases, with no known vaccine,” said Hayden.

The panel used years of data that shows correlations between increased rainfall accumulations in Africa and the reproduction of water-thriving mosquitoes, with the spread of diseases including Dengue Fever, Malaria, Cholera and Hantavirus.

According to the World Health Organization’s website: “Change in world climate would influence the functioning of many ecosystems and their member species. Likewise, there would be impacts on human health. Some of these health impacts would be beneficial. For example, milder winters would reduce the seasonal winter-time peak in deaths that occurs in temperate countries, while in currently hot regions a further increase in temperatures might reduce the viability of disease-transmitting mosquito populations. Overall, however, scientists consider that most of the health impacts of climate change would be adverse.”

The panel on Monday urged Congress to develop a comprehensive disease control and monitoring system that will help combat the onset of diseases that have increased in recent years.

“I believe Congress should be focused on our ability to monitor and track diseases generally, but particularly with diseases related to climate change,” said panelist Lynn Goldman, a professor at the Johns Hopkins University Bloomberg School of Public Health. “Right now we are doing a good job, but certainly monitoring can be very much improved.”