Ministry warns against public use of N-95 masks with valves Dr Rajiv Garg, the director general of health services, wrote to principal secretaries (health) of all states and union territories (UTs), and national health mission directors in this regard. July 22, 2020 at 05:35PM

Dr Rajiv Garg, the director general of health services, wrote to principal secretaries (health) of all states and union territories (UTs), and national health mission directors in this regard.

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