Not all masks have the same type of protection.
There are those that work effectively to ward off viruses, some are not especially effective.
Researchers at Duke University tested 14 different types of masks and face masks.
They found that some of them are not sufficient for protection against the virus, in this case, COVID-19.
Medics find N95 masks are the best for preventing droplet transmission during the speech.
The three-layer surgical mask and the homemade cotton cloth mask also perform well at resisting droplet rates.
Researchers found that bandana masks and knitted face masks lacked protection.
In fact, these two types of masks are better not used at all.
The last position is the neck guard, which runners often wear and make masks are the least effective.
In fact, if used as a mask, a neck guard will allow more droplets.