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Over 320,000 viruses in mammals yet to be discovered

Washington, Sept 4 : Scientists has claimed that there are at least 320,000 viruses in mammals that are awaiting discovery.


Collecting evidence of these viruses, or even a majority of them, they said, could provide information critical to early detection and mitigation of disease outbreaks in humans.

This undertaking would cost approximately 6.3 billion dollars, or 1.4 billion dollars if limited to 85 percent of total viral diversity -- a fraction of the economic impact of a major pandemic like SARS.

Close to 70 percent of emerging viral diseases such as HIV/AIDS, West Nile, Ebola, SARS, and influenza, are zoonoses -- infections of animals that cross into humans.

Yet until now, there has been no good estimate of the actual number of viruses that exist in any wildlife species.

"Historically, our whole approach to discovery has been altogether too random," lead author Simon Anthony, D.Phil, a scientist at the Center for Infection and Immunity (CII) at Columbia University's Mailman School of Public Health, said.

"What we currently know about viruses is very much biased towards those that have already spilled over into humans or animals and emerged as diseases. But the pool of all viruses in wildlife, including many potential threats to humans, is actually much deeper.

"A more systematic, multidisciplinary, and One Health framework is needed if we are to understand what drives and controls viral diversity and following that, what causes viruses to emerge as disease-causing pathogens," he added.

--ANI (Posted on 04-09-2013)

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