24 November 2021
What was claimed
Face masksThey are ineffective at stopping Covid-19, as the gaps they contain are larger than a Covid-19 virus particle.
Face masksEspecially for surgery masksCovid-19 infection has been reduced in studies using.
A post on Instagram claims that a Stanford study has been published face masksThese are ineffective at blocking Covid-19 viruses particles.
We have previously written about the study. The author was not affiliated to Stanford University. The paper was filled with basic errors and misrepresents legitimate research about the effect of face masks.
The study was subsequently retracted.
The post claims that face masksGaps measuring 55,000 nanometres in diameter, while the Covid-19 has gaps measuring 55,000 Nanometres in width virusIt is only 140 nanometres. face masksThey are pointless.
The gaps in face masksSometimes, they can be larger than the size a virus particle. That doesn’t mean face masksThey are pointless.
One reason is that Covid-19 can be spread by saliva droplets, which are viral particles that are exhaled. These droplets are larger than a virus particle and are therefore more likely to be blocked by a. face mask.
Additionally, epidemiologists from McMaster University, Leiden University, and the Karolinska Institutet, both in Stockholm, explain this in The Conversation “at this microscopic level, the thread has thickness, or depth, so the gap is more a tunnel than a window. Microfilaments from broken or irregular threads project into the gap.”
Also, even though there are large gaps in the data, mask fabric, that’s not to say a particle is guaranteed to move unimpeded through that gap. It would need to travel at an angle to avoid impacting with the material and to avoid any stray threads that may be used to fill in the gaps in fabric weave.
Evidence also supports the assertion that masksStop the transmission of viruses
A study published last year proved the effectiveness of face masksBy measuring the presence or absence of viruses in the exhaled air of people wearing surgical gowns face masks compared to those who weren’t.
It was discovered “surgical face masks significantly reduced detection of influenza virus RNA in respiratory droplets and coronavirus RNA in aerosols, with a trend toward reduced detection of coronavirus RNA in respiratory droplets.”
A recent study in Bangladesh revealed that people who were issued with surgical instruments had a higher chance of being successful. masksCovid-19 infection was 11% less common in these individuals. The results suggested that cloth is more comfortable than cloth masksThe results did not prove statistically significant, but they did reduce the risk.
The World Health Organisation describes face masksAs “a key measure to suppress transmission and save lives”.
This article is part our fact-checking Facebook stories, videos, and pictures that could be false. You can read more about this—and find out how to report Facebook content—here.
For the purposes of that scheme, we’ve rated this claim as false
Because the linked study is flawed and has been retracted, the claim that it was fraudulent face masksThe evidence does not support the claim that they are ineffective.