Green Options

Lester R. Brown

http://www.earth-policy.org/Books/Seg/PB3ch06_ss3.htm

Health challenges are becoming more numerous as new infectious diseases such as SARS, West Nile virus, and avian flu emerge. In addition, the accumulation of chemical pollutants in the environment is starting to take a toll. While infectious diseases are fairly well understood, the health effects of many environmental pollutants are not yet known.

Among the leading infectious diseases, malaria claims more than 1 million lives each year, 89 percent of them in Africa. The number of people who suffer from it most of their lives is many times greater. Economist Jeffrey Sachs estimates that reduced worker productivity and other costs associated with malaria are cutting economic growth by a full percentage point in heavily affected countries.

Although diseases such as malaria and cholera exact a heavy toll, there is no recent precedent of a disease affecting as many people as the HIV epidemic does. To find anything similar to such a potentially devastating loss of life, we have to go back to the smallpox decimation of Native American communities in the sixteenth century or to the bubonic plague that took roughly a fourth of Europe’s population during the fourteenth century. HIV is an epidemic of epic proportions that, if not checked soon, could take more lives during this century than were claimed by all the wars of the last century.

The average man living in forest-prone areas and who depends on meat from endangered apes and other wildlife for his proteins plays the role of a carrying agent for the hundreds of infectious diseases that humanity is suffering from.

Now experts are warning of the danger to humanity this lifestyle may be posing. Most of these diseases, identified in medical terms as zoonotic because of their ability to jump from animal to man, have been labeled as “emerging infectious diseases” or EIDs.

Over 60 percent of the 1,415 infectious diseases currently known to modern medicine are capable of infecting both humans and animals. Most of these diseases originated in animals and now infect people and include viruses, bacteria, fungi, protozoa and helminths, with 175 pathogenic species associated with diseases considered to be ‘emerging’.