Figure 4
From: In vitro testing of salt coating of fabrics as a potential antiviral agent in reusable face masks

TAQMAN reverse transcription-polymerase chain reaction for the determination of A/H3N2 virus genome copy (gc) numbers in the apical medium of MUCILAIR epithelia infected after direct contact of the virus with a non-coated test material or a test material coated with various concentrations of salt or Tween. (a) Salt coatings, log10 A/H3N2 gc number/mL quantified at 24 and 72 h post infection. (b) Salt coatings, viral replication at 72 h post infection. (c) Tween coatings, log10 A/H3N2 gc number/mL quantified at 24 and 72 h post infection. (d) Tween coatings, viral replication at 72 h post infection. Data are expressed as a percentage relative to the mean of log10 A/H3N2 virus gc number/mL quantified in the infected non-coated treatment group, which was normalized to 100%. Means ± standard errors are shown; n = 3 in all treatments, except for non-coated (n = 5). *P < 0.05.