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Presence of facemask among persons seen at select international airports, March 2020.
| Airport, Country | Date | Number of Photo Frames | Number of Faces identified | Presence of facemask |
|---|---|---|---|---|
| Bangkok, Thailand | March 6, 2020 | 38 | 279 | 46% |
| Paris, France | March 7, 2020 | 36 | 356 | 4% |
| Boston, USA | March 7, 2020 | 30 | 371 | 3% |
| Atlanta, USA |
March 7, 2020 |
48 |
554 |
2% |
| March 11, 2020 Declaration of Pandemic by W.H.O. |
||||
| Lima, Peru | March 12, 2020 | 21 | 237 | 27% |
