A chart accurately shows the effectiveness of wearing face masks during the COVID-19 pandemic.

By now, you may have seen a chart online that claims to show how long it takes to transmit COVID based on what mask you’re wearing.

Face mask effectiveness: What we know now When the COVID-19 pandemic took off in 2020, so too did questions over the effectiveness of wearing a face mask to prevent the spread of the virus.

Coronavirus Doctor says viral mask chart needs context A chart comparing different types of masks and their effectiveness needs context, according to the doctor who created it.

This chart shows how long it could take to transmit an infectious dose of COVID-19 based on what masks, if any, are being worn by both the infected and uninfected person.

Why every state should adopt a mask mandate, in 4 charts The latest research suggests mask mandates help control the spread of Covid-19.

One researcher found masks do much more to prevent someone with COVID-19 from spreading the virus than protecting someone from contracting it.

The World Health Organization advises against the general public wearing masks unless they are sick or caring for those infected.

In some places, the emergence of new COVID-19 variants is spurring the return of mask requirements and other safety measures.

Experts said a Cochrane review study seemed to imply masks don't work against COVID spread, but it was misinterpreted and was actually looking at mask interventions.

Keeping up with current mask research and knowing which face mask to purchase can be overwhelming—here's how to find the best masks for COVID-19.

For Some Patients, Long Covid Symptoms Mask Something Else The condition may be common, but issues like fever, shortness of breath, and fatigue can also be signs of other illnesses.