A decade after SARS swept through the world and killed more than 750
people, scientists have made a troubling discovery: A very close cousin
of the SARS virus lives in bats and it can likely jump directly to
people.
The findings create new fears about the emergence of diseases like SARS, or severe acute respiratory syndrome. The virus spread quickly from person to person in 2003 and had a mortality rate of at least 9%. Worries of a severe pandemic led the World Health Organization to issue an emergency travel advisory.
While bats have previously been fingered as a host for SARS, it was believed that the virus jumped from there to weasel-like mammals known as civets, where it went through genetic changes before infecting people. Operating on that belief, China cracked down on markets where bats, civets and other wildlife were sold for food.
The new bat-to-human discovery suggests that the control
tactic may have limited effectiveness because a SARS-like virus remains
loose in the wild and could potentially spark another outbreak.
"It changes the equation" for public health, said Peter Daszak, a senior author of the study and president of EcoHealth Alliance, a group involved in conservation and global health. "We can close all the markets in China and still have a pandemic."
The latest findings, published in the journal Nature on Wednesday, may also help scientists grapple with a more immediate worry. About a year ago, a novel SARS-like virus was reported in the Middle East. It has since killed more than 50 people, and some preliminary research suggests that it also may have originated in bats.
Continued, here.
The findings create new fears about the emergence of diseases like SARS, or severe acute respiratory syndrome. The virus spread quickly from person to person in 2003 and had a mortality rate of at least 9%. Worries of a severe pandemic led the World Health Organization to issue an emergency travel advisory.
While bats have previously been fingered as a host for SARS, it was believed that the virus jumped from there to weasel-like mammals known as civets, where it went through genetic changes before infecting people. Operating on that belief, China cracked down on markets where bats, civets and other wildlife were sold for food.
"It changes the equation" for public health, said Peter Daszak, a senior author of the study and president of EcoHealth Alliance, a group involved in conservation and global health. "We can close all the markets in China and still have a pandemic."
The latest findings, published in the journal Nature on Wednesday, may also help scientists grapple with a more immediate worry. About a year ago, a novel SARS-like virus was reported in the Middle East. It has since killed more than 50 people, and some preliminary research suggests that it also may have originated in bats.
Continued, here.
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