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Lack of Covid testing leaves researchers blind to evolution patterns, WHO warns

A dramatic drop in testing for Covid-19 has left the world blind to the virus’s continuing rampage and its potentially dangerous mutations, the head of the World Health Organization has warned.

The UN health agency said that reported Covid cases and deaths had been dropping dramatically. “Last week, just over 15,000 deaths were reported to WHO – the lowest weekly total since March 2020,” WHO chief Tedros Adhanom Ghebreyesus told reporters.

While saying this was “a very welcome trend”, he warned that the declining numbers could also be a result of significant cuts in testing for the virus.

“As many countries reduce testing, WHO is receiving less and less information about transmission and sequencing,” he said. “This makes us increasingly blind to patterns of transmission and evolution."

“When it comes to a deadly virus, ignorance is not bliss.”

William Rodriguez, who heads the global diagnostics alliance FIND, also decried that many governments in recent months simply stopped looking for Covid cases.

Speaking at the press conference hosted by WHO, he pointed out that in the past four months, amid surging Covid cases from the Omicron variant, “testing rates have plummeted by 70% to 90% worldwide”.

The plunging testing rates came despite the fact that there is now more access to accurate testing than ever before.

“We have an unprecedented ability to know what is happening,” Rodriguez said. “And yet today, because testing has been the first casualty of a global decision to let down our guard, we’re becoming blind to what is happening with this virus.”

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Source: The Guardian, 26 April 2022

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