Table 1.

Sentinella target population.

Sentinella target population Total	N (%) 2075
People experiencing homeless (PHE)	503 (24.2)
Male >65 and female >75	310 (14.9)
Hospital research staff	260 (12.5)
Hospital cleaning staff	246 (11.9)
Public bus drivers	199 (9.6)
Social workers	181 (8.7)
Students sharing residences	138 (6.7)
Fast food, beauticians, hairdresser	74 (3.6)
Supermarket employees	62 (3.0)
Hospital catering staff	59 (2.8)
Taxi drivers	43 (2.1)