Abstract
Puffing methyl-cellulose powder (pMC) into the nasal cavity of allergy sufferers creates a gel barrier which has been proven effective in controlling symptoms of allergic rhinitis. This mechanical protective layer can also obstruct other noxious agents like microbes and fine particulate pollutants. The aim of our study was to assess whether regular use of pMC in patients with seasonal allergic rhinitis (SAR) may offer also protection against SARS-CoV-2 infection.
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