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Health expert asserts on N95 mask without valve this winter
NEW DELHI : The aggravated air condition following winter where particulate matter (PM) of 2.5 & 10 escalates to an alarming level forcing people to wear N95 mask with a valve to be on safe zone, this winter doctors are insisting on N95 mask without valve.National capital whose AQI (Air Quality Index) level mostly fluctuated between very poor and severe category during past winters have already started experiencing a rise in COVID cases once more.3259 fresh COVID cases have mounted the overall infection tally closely to 3.27 lakh with 35 fatalities recorded in the last 24 hours in Delhi.