Face masks, handwashing, and vaccination do not weaken the immune system, and are effective measures to reduce the spread of infectious diseases

Public health measures such as vaccination, wearing face masks, or frequent handwashing do not reduce the ability of a person’s immune system to fight infections. On the contrary, these measures mitigate the spread of pathogens in the community and protect individuals from infectious diseases, including COVID-19. A balanced diet, regular exercise, adequate sleep, and reduced stress levels can also help maintain a healthy immune system.

Non-pharmaceutical interventions, such as lockdowns and wearing face masks, are effective measures to reduce COVID-19 transmission, contrary to claims in viral video

Scientific evidence indicates that lockdowns are an effective measure to reduce the spread and burden of COVID-19. However, lockdowns should not be used as a primary control measure, as they can also cause profound negative effects on a community due to disruptions in healthcare and supply chains. Testing, contact tracing, and isolation of positive cases are public health strategies that can help prevent and identify community outbreaks. Combined with widespread use of face masks, such measures can help reduce disease transmission and avoid further lockdowns.

Wearing face masks helps reduce the spread of COVID-19, but it only confers partial protection and should be combined with additional public health measures

A growing body of scientific evidence supports the use of face masks to reduce the transmission of viral respiratory infections like COVID-19. However, face masks only confer partial protection and should be combined with other public health measures, such as physical distancing and proper hand hygiene. Due to the use of a wide variety of face masks, more research is needed to assess the efficacy of different types of masks and mask material in various community settings, such as public spaces, schools, or workplaces.

The flu shot is an effective measure to protect people from flu, and enhances protection when used with face masks

Scientific evidence demonstrates that face masks reduce the transmission of viral respiratory infections like COVID-19 and the flu. However, they do not provide 100% protection from infection. Therefore, additional measures like physical distancing and good hand hygiene are important as additional protection. In the case of the flu, a preventative vaccine is available, making it another useful measure for enhancing protection against flu. Like face masks, the flu vaccine does not provide 100% protection. But even in cases where the vaccine does not prevent the flu, it can still help to reduce the severity of illness and in turn the likelihood of flu-related complications and death.

Using face masks does not increase the risk of skin or oral infections

Face masks are effective at reducing the spread of the virus that causes COVID-19 by limiting the transmission of respiratory droplets. Scientific evidence does not support the claim that wearing face masks increases the risk of oral and skin infections or bacterial overgrowth. In some cases, prolonged wearing of face masks might cause skin irritation, but this can be prevented by selecting comfortable masks and following proper hygiene guidelines.

Health authorities encourage the general public to wear face masks to reduce COVID-19 transmission

Health authorities like the World Health Organization and the U.S. Centers for Disease Control and Prevention now recommend that the public use face masks in shared spaces, like public transportation and grocery stores. This change in guidance occurred after several studies found that infected individuals can transmit COVID-19 even when not showing symptoms. Contrary to many viral claims, face masks do not cause oxygen deficiency or a toxic buildup of carbon dioxide. It is important to remember that cloth face masks, surgical masks, and even N95 respirators do not provide 100% protection from the novel coronavirus and therefore must be combined with other transmission control measures such as physical distancing and good hand hygiene.

Scientific evidence supports the use of face masks for reducing the transmission of respiratory diseases including COVID-19

Face masks are safe to use and are not associated with oxygen deficiency. Although more research is needed to better establish the efficacy of face masks in reducing disease transmission and the mechanisms behind their efficacy, a growing evidence base indicates that face masks have a beneficial effect in reducing the spread of respiratory diseases like COVID-19. However, masks do not provide 100% protection and must also be combined with other transmission control measures such as physical distancing and good hand hygiene.

People who do not show COVID-19 symptoms can and do transmit it to others; physical distancing and face masks effectively reduce the risk of transmission

The WHO uses the scientific definition of “asymptomatic”, which refers to people who never develop COVID-19 symptoms during infection with SARS-CoV-2. It is inaccurate to refer to all people who are not showing symptoms as “asymptomatic”, because presymptomatic people also appear healthy initially yet can still transmit the virus to others while showing no symptoms. As such, practicing physical distancing and using face masks or face coverings remain necessary for breaking the chain of transmission.

Wearing face masks does not cause hypercapnia or affect the immune system

Face masks help to limit contact with infectious droplets which carry pathogens. However, the material used for face masks are still porous enough to allow gas molecules, such as carbon dioxide and oxygen, to pass through, and do not significantly impair gas exchange to the point of causing hypercapnia. No scientific evidence supports the claim that the use of face masks weakens the immune system.