PMC:7780429 / 4064-4393 2 Projects
Annnotations
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T36 | 0-329 | Sentence | denotes | In the case of face masks, they must be highly effective, with type FFP2 (filtering face pieces) (in Europe), N95 (USA) and KN95 (China) recommended.6 There are other types of masks (surgical masks or FPP1 among others), of lesser effectiveness, which are used by healthcare personnel who is not in direct contact with COVID-19.7 |