London Daily

Focus on the big picture.
Monday, Sep 01, 2025

Can a face mask protect me from coronavirus? Covid-19 myths busted

Can a face mask protect me from coronavirus? Covid-19 myths busted

The truth about how you can catch coronavirus, how much more elderly people are at risk and what you can do to avoid infection

Claim: ‘Face masks don’t work’

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 fivefold 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.


Claim: ‘It is mutating into a more deadly strain’

All viruses accumulate mutations over time and the virus that causes Covid-19 is no different. How widespread different strains of a virus become depends on natural selection – the versions that can propagate quickest and replicate effectively in the body will be the most “successful”. This doesn’t necessarily mean most dangerous for people though, as viruses that kill people rapidly or make them so sick that they are incapacitated may be less likely to be transmitted.

Genetic analysis by Chinese scientists of 103 samples of the virus, taken from patients in Wuhan and other cities, suggests that early on two main strains emerged, designated L and S. Although the L strain appeared to be more prevalent than the S strain (about 70% of the samples belonged to the former), the S branch of the virus was found to be the ancestral version.

The team behind this research suggested that this may indicate the L strain is more “aggressive”, either transmitting more easily or replicating faster inside the body. However, this theory is speculative at this stage – there haven’t yet been direct comparisons to see whether people who catch one version of the virus are more likely to pass it on or suffer more severe symptoms.


Claim: ‘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.


Claim: ‘It only kills the elderly, so younger people can relax’

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.


Claim: ‘You need to be with an infected person for 10 minutes’

For flu, some hospital guidelines define exposure as being within six feet of an infected person who sneezes or coughs for 10 minutes or longer. However, it is possible to be infected with shorter interactions or even by picking the virus up from contaminated surfaces, although this is thought to be a less common route of transmission.


Claim: ‘A vaccine could be ready within a few months’

Scientists were quick out of the gates in beginning development of a vaccine for the new coronavirus, helped by the early release of the genetic sequence by Chinese researchers. The development of a viable vaccine continues apace, with several teams now testing candidates in animal experiments. However, the incremental trials required before a commercial vaccine could be rolled out are still a lengthy undertaking – and an essential one to ensure that even rare side-effects are spotted. A commercially available vaccine within a year would be quick.’

Newsletter

Related Articles

0:00
0:00
Close
Chinese and Indian Leaders Pursue Amity Amid Global Shifts
European Union Plans for Ukraine Deployment
ECB Warns Against Inflation Complacency
Concerns Over North Cyprus Casino Development
Shipping Companies Look Beyond Chinese Finance
Rural Exodus Fueling European Wildfires
China Hosts Major Security Meeting
Chinese Police Successfully Recover Family's Savings from Livestream Purchases
Germany Marks a Decade Since Migrant Wave with Divisions, Success Stories, and Political Shifts
Liverpool Defeat Arsenal 1–0 with Szoboszlai Free-Kick to Stay Top of Premier League
Prince Harry and King Charles to Meet in First Reunion After 20 Months
Chinese Stock Market Rally Fueled by Domestic Investors
Israeli Airstrike in Yemen Kills Houthi Prime Minister
Ukrainian Nationalist Politician Andriy Parubiy Assassinated in Lviv
Corporate America Cuts Middle Management as Bosses Take On Triple the Workload
Parents Sue OpenAI After Teen’s Death, Alleging ChatGPT Encouraged Suicide
Amazon Faces Lawsuit Over 'Buy' Label on Digital Streaming Content
Federal Reserve Independence Questioned Amid Trump’s Push to Reshape Central Bank
British Politics Faces Tumultuous Autumn After Summer of Rebellions and Rising Farage Momentum
US Appeals Court Rules Against Most Trump-Era Tariffs
UK Sought Broad Access to Apple Users’ Data, Court Filing Reveals
UK Bank Shares Dive Over Potential Tax on Sector
Germany’s Auto Industry Sheds 51,500 Jobs in First Half of 2025 Amid Deepening Crisis
Bruce Willis Relocated Due to Advanced Dementia
French and Korean Nuclear Majors Clash As EU Launches Foreign Subsidy Probe
EU Stands Firm on Digital Rules as Trump Warns of Retaliation
Getting Ready for the 3rd Time in Its History, Germany Approves Voluntary Military Service for Teenagers
Argentine President Javier Milei Evacuated After Stones Thrown During Campaign Event
Denmark Confronts U.S. Diplomat Over Covert Trump-Linked Influence in Greenland
Starmer Should Back Away from ECHR, Says Jack Straw
Trump Demands RICO Charges Against George Soros and Son for Funding Violent Protests
Taylor Swift Announces Engagement to NFL Star Travis Kelce
France May Need IMF Bailout, Warns Finance Minister
Chinese AI Chipmaker Cambricon Posts Record Profit as Beijing Pushes Pivot from Nvidia
After the Shock of Defeat, Iranians Yearn for Change
Ukraine Finally Allows Young Men Aged Eighteen to Twenty-Two to Leave the Country
The Porn Remains, Privacy Disappears: How Britain Broke the Internet in Ten Days
YouTube Altered Content by Artificial Intelligence – Without Permission
Welcome to The Definition of Insanity: Germany Edition
Just a reminder, this is Michael Jackson's daughter, Paris.
Spotify’s Strange Move: The Feature Nobody Asked For – Returns
Manhunt in Australia: Armed Anti-Government Suspect Kills Police Officers Sent to Arrest Him
China Launches World’s Most Powerful Neutrino Detector
How Beijing-Linked Networks Shape Elections in New York City
Ukrainian Refugee Iryna Zarutska Fled War To US, Stabbed To Death
Elon Musk Sues Apple and OpenAI Over Alleged App Store Monopoly
2 Australian Police Shot Dead In Encounter In Rural Victoria State
Vietnam Evacuates Hundreds of Thousands as Typhoon Kajiki Strikes; China’s Sanya Shuts Down
UK Government Delays Decision on China’s Proposed London Embassy Amid Concerns Over Redacted Plans
A 150-Year Tradition to Be Abolished? Uproar Over the Popular Central Park Attraction
×