No.	Search terms	Results
1	(doctor* or physician* or nurse* or clinician* or consultant* or healthcare assistant* or health care assistant* or health care professional* or healthcare professional* or team* or healthcare worker* or health care worker* or (health* adj2 personnel) or medical or nursing or staff).ti,ab.	1811863
2	exp health personnel/	430936
3	exp health facilities/	682773
4	(ward? or centre or centres or center or centers or department? or unit or units or hospital?).ti,ab.	1960472
5	long‐term care.ti,ab.	16518
6	(residential adj3 (care or healthcare or facilit*)).ti,ab.	4658
7	nursing home?.ti,ab.	25235
8	1 or 2 or 3 or 4 or 5 or 6 or 7	3711914
9	hand disinfection/	4943
10	(handwash* or hand wash* or hand hygiene or handrub* or hand rub*).ti,ab.	6366
11	(hand? adj2 (clean* or decontaminat* or disinfect* or hygiene or hygienic* or saniti* or sterili* or wash*)).ti,ab.	6686
12	(hand* adj3 (alcohol* or propanol* or ethanol*)).ti,ab.	1322
13	(hand* adj scrub*).ti,ab.	101
14	(antisepsis/ or sterilization/ or disinfection/) and hand/	432
15	(hand? adj2 (aseps* or aseptic* or antisep*)).ti,ab.	216
16	or/9‐15	10437
17	((university adj student?) or school or preschool* or pre‐school* or daycare? or virolog* or parasitol* or home* or sanitat* or water).ti.	344602
18	16 not 17	9861
19	randomized controlled trial.pt.	432907
20	controlled clinical trial.pt.	91818
21	multicenter study.pt.	212516
22	pragmatic clinical trial.pt.	427
23	(randomis* or randomiz* or randomly).ti,ab.	703141
24	groups.ab.	1648291
25	(trial or multicenter or multi center or multicentre or multi centre).ti.	192218
26	(intervention? or effect? or impact? or controlled or control group? or (before adj5 after) or (pre adj5 post) or ((pretest or pre test) and (posttest or post test)) or quasiexperiment* or quasi experiment* or pseudo experiment* or pseudoexperiment* or evaluat* or time series or time point? or repeated measur*).ti,ab.	7780288
27	non‐randomized controlled trials as topic/	83
28	interrupted time series analysis/	226
29	controlled before‐after studies/	185
30	or/19‐29	8697386
31	exp animals/	20710394
32	humans/	16384441
33	31 not (31 and 32)	4325953
34	review.pt.	2202629
35	meta analysis.pt.	74283
36	news.pt.	180656
37	comment.pt.	686913
38	editorial.pt.	420754
39	cochrane database of systematic reviews.jn.	16245
40	comment on.cm.	686917
41	(systematic review or literature review).ti.	85309
42	or/33‐41	7512404
43	30 not 42	6043658
44	8 and 16 and 43	3925304