Experimental Efficacy of the Face Shield and the Mask against Emitted and Potentially Received Particles
Bibliographic Data
| ID | 15466643 |
|---|---|
| Authors | Jean-Michel Wendling (0000-0001-7342-8217, Occupational Health and Safety, ACST, F-67000 Strasbourg, France), Thibaut Fabacher (Hôpitaux Universitaires de Strasbourg), Philippe-Pierre Pébaÿ (NexGen Analytics, Sheridan, WY 82801, USA), Isabelle Cosperec (PharmD, F-94210 St Maur-des-Fossés, France), Michaël Rochoy (0000-0002-8865-3748, Université de Lille, corresponding author) |
| Year | 2021 |
| Volume | 18 |
| Issue | 4 |
| Pages | 1942-1942 |
| Publication date | 2021-02-17 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph18041942 |
| PMID | 33671300 |
| OpenAlex | W3130870615 |
| Language | EN |
| Citations received | 1 |
| References cited | 47 |
There is currently not sufficient evidence to support the effectiveness of face shields for source control. In order to evaluate the comparative barrier performance effect of face masks and face shields, we used an aerosol generator and a particle counter to evaluate the performance of the various devices in comparable situations. We tested different configurations in an experimental setup with manikin heads wearing masks (surgical type I), face shields (22.5 cm high with overhang under the chin of 7 cm and circumference of 35 cm) on an emitter or a receiver manikin head, or both. The manikins were face to face, 25 cm apart, with an intense particle emission (52.5 L/min) for 30 s. The particle counter calculated the total cumulative particles aspirated on a volume of 1.416 L In our experimental conditions, when the receiver alone wore a protection, the face shield was more effective (reduction factor = 54.8%), while reduction was lower with a mask (reduction factor = 21.8%) ( p = 0.002). The wearing of a protective device by the emitter alone reduced the level of received particles by 96.8% for both the mask and face shield ( p = NS). When both the emitter and receiver manikin heads wore a face shield, the protection allowed for better results in our experimental conditions: 98% reduction for the face shields versus 97.3% for the masks ( p = 0.01). Face shields offered an even better barrier effect than the mask against small inhaled particles (<0.3 μm-0.3 to 0.5 μm-0.5 to 1 μm) in all configurations. Therefore, it would be interesting to include face shields as used in our experimental study as part of strategies to reduce transmission within the community setting
Chin · Common emitter · Composite material · Electromagnetic shielding · Face shield · Geometry · Nuclear medicine · Optoelectronics · Particle (ecology · Reduction (mathematics · Shield · Shields · Burn Injury Management and Outcomes · Infection Control and Ventilation · Materials Science · Mathematics · Medicine · Noise Effects and Management · Geology
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| Unique citing works | 1 |
|---|---|
| Citations per year | 0,2 |
| Citation span | 2021 - 2021 (1) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 1 |