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An analysis of the University of Barcelona , in collaboration with Aguas de Barcelona , has found the presence of coronaviruses in Barcelona's wastewater on January 15, 41 days before the first case was detected.

Experts have analyzed water samples from the Catalan capital since last October and have found no trace of the virus until mid-January, explained the president of the Spanish Society of Virology and professor of Microbiology at the UB, Albert Bosch in an interview in Rac1.

This analysis system, he said, allows "much anticipation of the presence of the virus in the population." "I am not saying it is a simple task," he stressed, "but it leaves us a margin of time to act immediately."

"Strategic surveillance is being prepared at the level of Catalonia and Spain," Bosch announced in this regard, "it can be put into practice fairly immediately."

The president of the Spanish Society of Virology considers that approximately "a third of the infected population" has been asymptomatic, and has confirmed that the coronavirus trace has been practically lost in the waters of Barcelona, ​​although "in some of the large collectors of Barcelona we still find it. "

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