Study reveals that air purifiers don’t stop you from getting sick – World News Network

Date:

Washington DC [US], November 19 (ANI): Air filtration systems do not lower the risk of catching viral infections, per recent research from the University of East Anglia.
According to a recent study, there is no practical use for technologies intended to make social interactions safer indoors.
The group looked into ionisers, germicidal lamps, and air filtering systems.
After examining all the data, they concluded that there was not much to encourage optimism that these technologies would protect the air against gastrointestinal or respiratory illnesses.
Prof Paul Hunter, from UEA’s Norwich Medical School, said, “Air cleaners are designed to filter pollutants or contaminants out of the air that passes through them.
“When the Covid pandemic hit, many large companies and governments–including the NHS, the British military, and New York City and regional German governments–investigated installing this type of technology in a bid to reduce airborne virus particles in buildings and small spaces.
“But air treatment technologies can be expensive. So it’s reasonable to weigh up the benefits against the costs and to understand the current capabilities of such technologies.”
The research team studied evidence about whether air cleaning technologies make people safe from catching airborne respiratory or gastrointestinal infections.
They analysed evidence about microbial infections or symptoms in people exposed or not to air treatment technologies in 32 studies, all conducted in real-world settings like schools or care homes. So far, none of the studies of air treatment started during the Covid era have been published.
Lead researcher Dr Julii Brainard, also from UEA’s Norwich Medical School, said: “The kinds of technologies that we considered included filtration, germicidal lights, ionisers and any other way of safely removing viruses or deactivating them in breathable air.
“In short, we found no strong evidence that air treatment technologies are likely to protect people in real-world settings.
“There is a lot of existing evidence that environmental and surface contamination can be reduced by several air treatment strategies, especially germicidal lights and high-efficiency particulate air filtration (HEPA). But the combined evidence was that these technologies don’t stop or reduce illness.
“There was some weak evidence that the air treatment methods reduced the likelihood of infection, but this evidence seems biassed and imbalanced.
“We strongly suspect that there were some relevant studies with very minor or no effect but these were never published. Our findings are disappointing, but it is vital that public health decision-makers have a full picture.”
“Hopefully those studies that have been done during Covid will be published soon and we can make a more informed judgement about what the value of air treatment may have been during the pandemic.”
This research was led by the University of East Anglia with collaborators at University College London, the University of Essex, the Norfolk and Norwich University Hospital Trust, and the University of Surrey. (ANI)

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