Figure 7.

IONzyme-loaded facemask protects against influenza. (A) A picture of anti-IAVs mask with eight-layer absorbent filter cotton. Different concentrations of IONzymes were added on the third layer of selected area (5 cm²), respectively. After drying, IAVs (H1N1, H5N1, and H7N9 subtype) was sprayed onto the eighth layer (the outermost layer). After standing for 0.5 or 1 h, the population of the living virus on the control area or IONzyme-added area were harvested, and then HA and TCID₅₀ titers of H1N1 (B), H5N1 (C), and H7N9 (D) IAVs were measured. The data are presented as the mean ± s.d. of three independent experiments. Statistical significance is assessed by unpaired Student's two-sided t-test to the control group. **P<0.01.