Adherence of SARS-CoV-2 Delta Variant to a Surgical Mask and N95 Respirators

Figures & data

Table 1. Characteristics of the masks and respirators used in this study.

No.	Brand	Layer	Material	Ref.
1	North N95 7130 (lot no. 9E001) Closed-cell vinyl foam	Outer Filter Support Inner	Polypropylene Polypropylene composite Polyester Polyester	[15]
2	North N95 5130 (lot no. 9G004) Open-cell foam seal	Outer Filter Inner	Polyester Polypropylene composite Polyester	[15]
3	3-ply surgical mask	Outer Filter Inner	Fluid resistant Polypropylene Absorbent	[16]
4	3M 8210 N95 (lot no. A20047) Standard respirator	Outer Filter Inner	Polyester Polypropylene Polyester	[17]
5	3M 1860 N95 (lot no. B16047) Surgical respirator	Outer Filter Inner	Polyester Polypropylene Polyester	[17]

Figure 1. Mask or respirator layers.

Description of the mask and respirator layers used in this study.

Created by Biorender.com.

Figure 2. Viral titers of SARS-CoV-2 were deposited onto layers.

The virus was deposited on the layers, and after drying, non-adherent viruses were released from the layers by vortexing and according to the method section. (A) Respirator 7130, (B) Respirator 5130, (C) Surgical masks, (D) Respirator 8210 and (E) Respirator 1860. Shown is the mean of at least three independent experiments ± SD. The number located in the lower panel is the cumulative log reduction of the layers. The arrangement of the layers is from the outer layer (A) to the inner layer (C), except for one that has four layers (D).

SD: Standard deviation.

North. Datasheet: technical data sheet technical data 7130n95 8140p95 8150p100 north filtering facepiece. http://www.industrycortex.com/datasheets/profile/1259774979/technical-data-sheet-technical-data-7130n95-8140p95-8150p100-nort

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3M. 3M™ Particulate Respirator 8210, N95 160 EA/Case. https://www.3m.com/3M/en_US/p/d/v000585997/

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