Wednesday, 17 March 2021

Lab leak: A scientific debate mired in politics — and unresolved

‘More than a year into the SARS-CoV-2 pandemic, some scientists say the possibility of a lab leak never got a fair look...

‘As it stands now, pandemic preparedness faces two simultaneous fronts. On the one hand, the world has experienced numerous pandemic and epidemic outbreaks in the last 20 years, including SARS, chikungunya, H1N1, Middle East Respiratory virus, several Ebola outbreaks, three outbreaks of norovirus, Zika, and now SARS-CoV-2. Speaking of coronaviruses, says Ralph Baric, an epidemiologist at the University of North Carolina, Chapel Hill, “it’s hard to imagine there aren’t variants” in bats with mortality rates approaching MERS’ 30 percent that also have “a transmissibility that is much more efficient. And that is terrifying.” Baric is emphatic that genetic research with viruses is essential to staying ahead of the threat.

‘Yet according to Richard Ebright, a molecular biologist at Rutgers University, lab-release dangers are growing as well. The risk increases in proportion with the number of labs handling bioweapons and potential pandemic pathogens (more than 1,500 globally in 2010), he says, many of them, like the Wuhan lab, located in urban areas close to international airports. “The most dramatic expansion has occurred in China during the last four years — driven as an arms-race-style reaction to biodefense expansion in the U.S., Europe, and Japan,” Ebright wrote in an email to Undark. “China opened two new BSL-4 facilities, in Wuhan and in Harbin, in the last four years,” he added, “and has announced plans to establish a network of hundreds of new BSL-3 and BSL-4 labs.”

Read here (Undark, Mar 17, 2021)

Worst ever Covid variant? Omicron

John Campbell shares his findings on Omicron.  View here (Youtube, Nov 27, 2021)