Friday, November 2, 2012

Where Will The Next Pandemic Come From? And How Can We Stop It?

A horse dies mysteriously in Australia, and people around it fall sick. A chimpanzee carcass in Central Africa passes Ebola to the villagers who scavenge and eat it. A palm civet, served at a Wild Flavors restaurant in southern China, infects one diner with a new ailment, which spreads to Hong Kong, Toronto, Hanoi, and Singapore, eve
ntually to be known as SARS. These cases and others, equally spooky, represent not isolated events but a pattern, a trend: the emergence of new human diseases from wildlife.
The experts call such diseases zoonoses, meaning animal infections that spill into people. About 60 percent of human infectious diseases are zoonoses.

For the most part, they result from infection by one of six types of pathogen: viruses, bacteria, fungi, protists, prions, and worms. The most troublesome are viruses. They are abundant, adaptable, not subject to antibiotics, and only sometimes deterred by antiviral drugs. Within the viral category is one particularly worrisome subgroup, RNA viruses. AIDS is caused by a zoonotic RNA virus.
So was the 1918 influenza, which killed 50 million people. Ebola is an RNA virus, which emerged in Uganda this summer after four years of relative quiescence. Marburg, Lassa, West Nile, Nipah, dengue, rabies, yellow fever virus, and the SARS bug are too.

Read more at http://www.popsci.com/science/article/2012-08/out-wild
Where Will The Next Pandemic Come From? And How Can We Stop It?

A horse dies mysteriously in Australia, and people around it fall sick. A chimpanzee carcass in Central Africa passes Ebola to the villagers who scavenge and eat it. A palm civet, served at a Wild Flavors restaurant in southern China, infects one diner with a new ailment, which spreads to Hong Kong, Toronto, Hanoi, and Singapore, eventually to be known as SARS. These cases and others, equally spooky, represent not isolated events but a pattern, a trend: the emergence of new human diseases from wildlife.
The experts call such diseases zoonoses, meaning animal infections that spill into people. About 60 percent of human infectious diseases are zoonoses. 

For the most part, they result from infection by one of six types of pathogen: viruses, bacteria, fungi, protists, prions, and worms. The most troublesome are viruses. They are abundant, adaptable, not subject to antibiotics, and only sometimes deterred by antiviral drugs. Within the viral category is one particularly worrisome subgroup, RNA viruses. AIDS is caused by a zoonotic RNA virus.
So was the 1918 influenza, which killed 50 million people. Ebola is an RNA virus, which emerged in Uganda this summer after four years of relative quiescence. Marburg, Lassa, West Nile, Nipah, dengue, rabies, yellow fever virus, and the SARS bug are too.

Read more at http://www.popsci.com/science/article/2012-08/out-wild

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