Covid-19 facts checked: Can a face mask stop coronavirus?
- As the virus spread from Wuhan, China, to the rest of the world, misinformation tagged along. Join us as we tackle this misinformation head on, bringing you the latest completely fact-checked answers to some of the most commonly asked questions!
What is coronavirus?
Coronavirus disease 2019 (COVID-19) is a respiratory illness that can spread from person to person. The virus that causes COVID-19 is a novel coronavirus that was first identified during an investigation into an outbreak in Wuhan, China.
Will a face mask protect me from coronavirus?
Wearing a face mask is certainly not an iron-clad guarantee that you won’t get sick – viruses can also transmit through the eyes and tiny viral particles, known as aerosols, can penetrate masks. However, masks are effective at capturing droplets, which is a main transmission route of coronavirus, and some studies have estimated a roughly five-fold protection versus no barrier alone (although others have found lower levels of effectiveness).
If you are likely to be in close contact with someone infected, a mask cuts the chance of the disease being passed on. If you’re showing symptoms of coronavirus, or have been diagnosed, wearing a mask can also protect others. So masks are crucial for health and social care workers looking after patients and are also recommended for family members who need to care for someone who is ill – ideally both the patient and carer should have a mask.
However, masks will probably make little difference if you’re just walking around town or taking a bus so there is no need to bulk-buy a huge supply.
It is no more dangerous than winter flu?
Many individuals who get coronavirus will experience nothing worse than seasonal flu symptoms, but the overall profile of the disease, including its mortality rate, looks more serious. At the start of an outbreak the apparent mortality rate can be an overestimate if a lot of mild cases are being missed. But Bruce Aylward, a WHO expert, who led an international mission to China to learn about the virus and the country’s response, said this has not been the case with COVID-19. The evidence did not suggest that we were only seeing the tip of the iceberg. If borne out by further testing, this could mean that current estimates of a roughly 1% fatality rate are accurate. This would make COVID-19 about 10 times more deadly than seasonal flu, which is estimated to kill between 290,000 and 650,000 people a year globally.
It only affects old people, right?
Most people who are not elderly and do not have underlying health conditions will not become critically ill from COVID-19. But the illness still has a higher chance of leading to serious respiratory symptoms than seasonal flu and there are other at-risk groups – health workers, for instance, are more vulnerable because they are likely to have higher exposure to the virus. The actions that young, healthy people take, including reporting symptoms and following quarantine instructions, will have an important role in protecting the most vulnerable in society and in shaping the overall trajectory of the outbreak.
What can I do to protect myself and those around me?
- Tags: Face Mask
- Mollie Page