Myth vs. Fact

Myth: We don't need masks. We need herd immunity.

Fact: Herd immunity works only if about 70% of the total population has COVID-19 from either a past infection or from a vaccine.

Myth: Wearing a mask prevents oxygen from getting into the lungs.

Fact: Surgical masks and cloth face coverings allow some air to flow in and out of the lungs. They will not cause hypoxia (oxygen deprivation).

A myth that has some truth: wearing a mask can cause some people anxiety and a sense of claustrophobia.

credit: pennstatehealth