However, only N95 (1860) masks provide protection against inhalation of 10-80 nm virions, with only 5% of virions able to fully penetrate; SARS-CoV-2 is similar to SARS-CoV in size, as both measure around 85 nm.
Hata hivyo, barakoa za N95 pekee (matoleo ya # 1860) zinaweza kulinda dhidi ya kupumua ndani viini vidogo hata kwa vipimo vya 10 hadi 80 nm, huku 5% ya viini hivyo vikiweza kupenyeza kikamilifu; SARS-CoV-2 ni sawa na SARS-CoV kwa ukubwa na ni takriban 85 nm.