For many individuals worldwide, having cotton swabs thrust up their nostril or down their throat to check for covid-19 has turn into a routine and acquainted annoyance.

But two years into the pandemic, well being officers in some international locations are questioning the deserves of repeated, mass testing in relation to containing infections, significantly contemplating the billions it prices.

Chief amongst them is Denmark, which championed one of many world’s most prolific covid testing regimes early on. Lawmakers at the moment are demanding a detailed research of whether or not that coverage was efficient.

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“We’ve examined a lot greater than different international locations that we would have overdone it,” stated Jens Lundgren, professor of infectious ailments at Rigshospitalet, University of Copenhagen, and member of the federal government’s covid advisory group.

Japan prevented large-scale testing and but weathered the pandemic comparatively properly, based mostly on an infection and dying charges. Other international locations, together with Britain and Spain, have scaled again testing.

Yet repeated testing of total cities stays a central a part of the “zero-covid” plan in China, the place leaders have threatened motion towards critics.

“We have to study, and nobody did it completely,” stated Dale Fisher, chair of the World Health Organization’s Global Outbreak Alert and Response Network.

The WHO urged international locations to “take a look at, take a look at, take a look at” all suspected instances after the coronavirus was first recognized. Global surveillance helped scientists perceive the danger of extreme sickness or dying, in addition to the danger of transmission.

Now, with the dominance of the comparatively milder Omicron variant and the provision of vaccines and simpler remedies, governments ought to take into account extra strategic insurance policies, corresponding to inhabitants sampling, consultants stated.

Pulling again too drastically, nevertheless, may go away the world blind to a still-changing virus, some officers stated.

Significant prices

WHO tips have by no means really useful mass screening of asymptomatic people – as is presently occurring in China – due to the prices concerned and the dearth of information on its effectiveness.

Denmark in the end recorded related case numbers and dying charges as different international locations with much less widespread testing. This has prompted a majority of events in parliament to name for an investigation into the technique.

    In the final two years, Denmark’s inhabitants of 5.8 million logged greater than 127 million fast and PCR exams, all offered free. In complete, Denmark spent greater than 16 billion crowns ($2.36 billion) on testing, in line with the Danish Critical Supply Agency.

Neighbouring Norway, with an identical inhabitants dimension, solely carried out 11 million PCR exams, whereas Sweden, dwelling to just about twice as many individuals, accomplished round 18 million, in line with Our World in Data.

    Christine Stabell Benn, professor of worldwide well being at University of Southern Denmark, stated Denmark’s technique was costly and outcomes “undocumented”.

“The mass testing strategy took away the main focus from testing the place it actually issues: among the many weak.”

  Other consultants – and the Danish authorities – stated widespread testing diminished the transmission charge and helped individuals re-enter society, boosting the financial system and their very own psychological well being. The financial system took a comparatively milder hit than different European international locations, in line with a authorities report launched in September.

“There is little question that the human and financial prices of, for instance, an intensive lockdown, as we’ve got seen in lots of different international locations, could be higher,” Justice Minister Nick Haekkerup advised Reuters in an electronic mail.


One Danish research printed final 12 months concluded that the testing programme and subsequent isolation of confirmed instances helped scale back transmission by as much as 25%.

Other illness consultants question such estimates. A evaluation printed in Medical Virology in late March on using fast exams for individuals with out signs in mass screening initiatives discovered “uncertainty” over their affect.

“The declare was that (mass testing) would cease the pandemic in its tracks, and that it could lower transmission by 90%. And it hasn’t,” stated Angela Raffle, a senior lecturer at Bristol University Medical School, who has labored with the UK’s National Screening Committee.

There are a number of attainable explanations why testing didn’t yield a much bigger profit, together with an over-ambitious goal and the truth that the exams have been imperfect. Plus many individuals both didn’t or couldn’t isolate after testing optimistic: a evaluation within the British Medical Journal, pre-Omicron, discovered that solely 42.5% of such instances stayed dwelling for your complete isolation interval.

In England, free covid exams at the moment are solely obtainable for presidency healthcare employees, these with sure well being circumstances and folks coming into hospital. Others, even with signs, need to pay for exams or are merely suggested to remain at dwelling till they really feel higher. 

Some world well being consultants say such a pullback goes too far.

“In some settings, as a result of politicians have determined to ‘transfer on’ and dismantle all public well being, testing has been intentionally diminished or made more durable to entry,” stated Madhu Pai, a worldwide well being professor at McGill University in Canada.

“This might be disastrous, as a result of we might be utterly caught off guard if a extra harmful variant emerges.”

This story has been printed from a wire company feed with out modifications to the textual content.

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