What evidence exists on the impact of specific ecosystem components and functions on infectious diseases? A systematic map

Table 2 Summary of findings for the 34 groups of articles screened according to their validity

Disease	Group number	Exposure	Number of studies synthesized	Findings	Result sub- section
Avian Influenza	1	% of riceland	4	Variable	1.1
	2	% of waterbodies	7	Variable	1.1
	3	Distance to waterbodies	3	Variable	1.1
	4	Vegetation cover	4	Variable	1.1
	5	Contact with wildlife	2	Similar	1.2
Bovine tuberculosis	6	% of grasslands	2	Variable	2.1
	7	% of forest	2	Variable	2.1
	8	Host species richness	3	Variable	2.2
	9	Contact with wildlife	2	Variable	2.2
Brucellosis	No group				3
Chikungunya	No group				4
Cryptosporidiosis	No group				5
Dengue	10	% of urban land-use		Similar	6.1
Echinococcosis	11	% of grasslands	8	Similar	7.1
	12	Rodent density	3	Similar	7.2
	13	Predation	2	Similar	7.2
Leishmaniasis	14	% of forest	1	Similar	8.1
	15	Distance to forest	3	Similar	8.1
	15	Vegetation cover	3	Similar	8.1
Leptospirosis	No group				9
Lyme	17	% of forest	4	Similar	10.1
	18	Fragmentation of forests	5	Variable	10.1
	19	Type of forest	9	Variable	10.1
	20	Presence/absence of shrubs	6	Similar	10.1
	21	Density of rodents	9	Variable	10.2
	22	Density of cervids	12	Variable	10.2
	23	Host species richness	6	Variable	10.2
	24	Predation	2	Similar	10.2
Malaria	25	% of forest	4	Similar	11.1
Malaria	26	Type of agroecosystem	4	Variable	11.1
Schistosomiasis	27	Vegetation cover	4	Similar	12.1
	28	Predation	2	Similar	12.2
	29	Host species richness	3	Similar	12.2
West Nile	30	% of urban land-use	6	Variable	13.1
	31	% of forest	8	Variable	13.1
	32	% of waterbodies	5	Variable	13.1
	33	Host species richness	8	Variable	13.2
	34	Host community composition	4	Variable	13.2

ISSN: 2047-2382