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Two parallel studies were conducted
In the second study, a preliminary ecological regression study was conducted on COVID-19 cases in the United States from January 2020 to March 2021.
"Multiple mechanisms seem to help reduce the symptoms of respiratory diseases by breathing moist air," said Adriaan Burlington, a distinguished scientist in the National Institutes of Health and the author of a recent article in the Journal of Biophysics, clarifying that the mask is worn on inhalation The effect of air humidification
David Edwards said: "In order to purify the air we breathe naturally and effectively, we need to balance the water and salt in the respiratory tract, as well as the watery characteristics of the air itself
Dr.