The Director-General of NCDC, Dr. Chikwe Ihekweazu disclosed this in an interview with the News Agency of Nigeria (NAN) in Abuja today.
According to him, even if masks are also not known to offer absolute protection, there is no evidence at all that suggests wearing shields can help to limit the risk of contracting the virus.
He added that the act of wearing face shields should not be promoted until scientists have sufficient evidence that they offer protection when used by members of the public.
His words, “WHO says face mask should be worn where there is widespread transmission and physical distancing is difficult such as in public transport, markets and confined or crowded environments.
“Prior to this, the Federal Government on April 27, 2020, through Mr Boss Mustapha, the Chairman of the Presidential Task Force (PTF) on COVID-19 and the Secretary to the Government of the Federation, announced the compulsory use of face mask or covering in public spaces.
“Since then, Nigerians adapted the use of face masks in public settings and some have now started wearing face shields.”
“In addition, there is limited to no evidence on the effectiveness of face shields for community use by members of the public.
“Face shields are most important in healthcare settings to protect healthcare workers during processes such as intubation, the process of inserting a tube, called an Endotracheal Tube (ET), through the mouth and then into the airway.
“We do not have evidence that using face shields outside healthcare settings can protect members of the community.
“Therefore, this is a practice that should not be promoted until we have sufficient evidence that they offer protection when used by members of the public.”
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