| Value |
Category |
| -2147483648 |
Not applicable |
| -77 |
Other (specify) |
| 1 |
Cotton |
| 2 |
Silk |
| 3 |
Paper |
| 4 |
Surgical mask -- non-woven fabric |
| 5 |
N95 - approved medical material |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.