Table 1. Records excluded from study and reasons.

Reason	No. of studies	References
Full text not available	9	18–26
Non-clinical/non-human specimen tested	4	27–30
Only Travellers	4	31–34
Refugees and asylum seekers	2 (Full-text excluded)	35,36
Single pathogen focus	17 (8 Full-text excluded)	34,37–52
No aetiology data reported	4	53–56
Inadequate data	5	57–60
Others, Special populations	3	61–63
Reviews	4	64–67