NCDC Issues Advisory On The Use Of Face Mask

14th April 2020- NIGERIA CENTRE FOR DISEASE CONTROL ON THE USE OF MASKS BY

MEMBERS OF THE PUBLIC WITHOUT RESPIRATORY SYMPTOMS
Background

Since the coronavirus disease (COVID-19) was first reported in Wuhan, China in December 2019, it
has spread rapidly across the globe, leading to over a million confirmed cases in three months. On the 27th of February 2020, Nigeria confirmed its first case of COVID-19. Since then, the number of
confirmed cases has gradually increased, with more sporadic cases reported across more states in
Nigeria.

Nigeria is a densely populated country with about 200 million people across 774 Local Government
Areas (LGAs) in 36 states and the Federal Capital Territory (FCT).  This context and other socio
economic factors make the country particularly vulnerable for a highly transmissible virus such as
SARS-CoV-2 to spread.

According to the World Health Organization (WHO), medical face masks should be worn primarily
by people who show symptoms of COVID-19, health workers and people who are taking care of
people with COVID-19 in close settings (at home or in a health care facility). The Nigeria Centre for
Disease Control recommends the use of face masks by members of the public, as an optional
additional layer and not as a compulsory measure, in addition to physical distancing, hand and
respiratory hygiene measures in Nigeria. This is not a compulsory advisory, but it is an added
recommendation in addition to the above measures.

Principles of prevention of COVID-19

SARS-CoV-2, the virus that causes COVID-19 is most frequently transmitted from one person to
another, through droplets from coughing or sneezing. The virus can also be transmitted by touching
surfaces that have been infected (e.g., door handles, countertops) or more rarely, from singing or
speaking loudly.

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Given what is understood about this new virus, the Nigeria Centre for Disease Control has advised
on the following measures to prevent transmission:

• Physical distancing – i.e. people should keep a minimum distance of 2 metres from one another.

• Handwashing with soap and water should be performed as frequently as possible or using an alcohol-based sanitizer where no water is available. • If someone is coughing or sneezing, they should cover their cough, using a disposable tissue and discarding in a waste bin and washing their hands or using their bent elbow.  • Normal practices like greeting one another with handshakes or hugging should be avoided.

Evidence relating to the community use of masks for prevention of COVID19

Globally, there is ongoing debate on the effectiveness of masks as a preventive measure for the
coronavirus disease. The evidence in favour of the use of masks includes the possibility of
asymptomatic (a person never develops symptoms) and pre-symptomatic (before a person
develops signs and symptoms) transmission and emerging evidence of the ability of a mask to
prevent contact with respiratory droplets.

Ecological comparisons also appear to suggest better  outcomes in countries that have used masks as a general policy. Sources of concern have been that  people who wear face masks may feel protected and ignore physical distancing advice. In addition,  if face masks are not worn correctly, disposed of appropriately or if people touch their faces more  frequently due to adjustments of the face masks they are wearing, they run a higher risk of infecting  themselves.

Increased anxiety among the public

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The daily real-time reporting of the COVID-19 pandemic has heightened panic and fear in people,
as the numbers of cases and deaths recorded globally continues to increase. There is a lot that
remains unknown about this disease. Authorities and scientists do not yet have all the answers to
the many questions being asked. The instinct for self-preservation and protection from harm and
the basic need to survive has brought about a need for self-defence against this novel virus. Many
people will be resorting to the use of face masks to gain some control and confidence in their ability
to protect themselves (and family) from contracting the coronavirus disease.
Recommendations

In view of these, the Nigeria Centre for Disease Control offers the following advice to members of
the public:

1. The wearing of face masks, (or equivalent) is recommended as an optional additional layer
to be used in addition to other measures such as physical distancing, hand and respiratory
hygiene measures in Nigeria. The primary rationale for the advice on face masks is to  prevent those who are infected but asymptomatic from spreading the virus. Masks have  to be properly disposed of in waste bins. Improper handling and frequently touching masks  can increase the risk of infection. Improvised masks are also an option – as long as they are properly washed regularly. They can be made out of cloth or other materials.  \

2. The usage of face masks is particularly advised while attending large gatherings (where it is absolutely necessary to attend). These include but are not limited to shopping outlets,  markets, shops and pharmacies among others.

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3. Given the global shortage of personal protective equipment including medical masks,  public sector resources should be preserved to procure medical masks for patients and  healthcare workers who need them the most.  4. The wearing of face masks alone will not protect against COVID-19, but must be combined  with physical distancing, handwashing, respiratory hygiene, cleaning and disinfecting  frequently touched surfaces and other advice from NCDC.  5. Older persons (> 60) with existing medical conditions such as diabetes are particularly  encouraged to wear masks as they are at higher risk of infection. It is also further advised  that face masks are used by more vulnerable members of the society, citizens with ongoing  respiratory problems, and those already exhibiting symptoms and awaiting testing.

It is important to remember that the usage of face masks alone cannot be relied upon to avoid the
COVID-19 virus; physical distancing, hand and respiratory hygiene measures are necessary for
protection from the virus.

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