Table 1.

Papers studying HPAI H5N1 spatial distribution grouped by geographical extent, and characterized by study area, type (CC: case-control; CS: cross-sectional; Desc: Descriptive; SP: Spatio-temporal pattern analysis), unit of analysis (Adm. L3: administrative level 3 boundaries or centroid), and analysis method (Log. Reg: logistic regression; Possion Reg. : Poisson regression; ENN: Ecological Niche Modelling; Space-time per.: Space-time permutation test)

Type	Study area	Unit of analysis	Method of analysis	Authors
Sub-national
CC	Bangladesh	Farm	Log. Reg.	Biswas et al. (2009)
CC	Nigeria	Farm	Log. Reg.	Fasina et al. (2011)
CC	Indonesia	Market	Log. Reg.	Indriani et al. (2010)
CC	Thailand	Farm	Log. Reg.	Paul et al. (2011)
CS	Mekong Delta	Adm. L3	Log. Reg.	Henning et al. (2008)
CS	Indonesian Province	Adm. L3	Poisson Reg.	Yupiana et al. (2010)
National
Desc.	Bangladesh	Cases	-	Ahmed et al. (2011)
Desc.	Nigeria	Cases	-	Cecchi et al. (2008)
Desc.	Indonesia	Cases (human)	-	Eyanoer et al. (2011)
Desc.	Thailand	Adm. L3	-	Tiensin et al. (2007)
SP	Bangladesh	Cases	K-function	Ahmed et al. (2010)
SP	Romania	Cases	Geostatistics	Farnsworth & Ward (2009)
SP	Vietnam	Adm. L3	K-function	Minh et al. (2009)
SP	China	Cases	Odens' direction	Oyana et al. (2006)
SP	Thailand	Adm. L3	Geostatistic test	Souris et al. (2010)
SP	Romania	Cases	Geostatistics	Ward et al. (2008)
SP	Southeast Asia & China	Cases (human)	Log. Reg	Kuo et al. (2009)
SP	China	Cases	Custom Model	Li et al. (2004)
CS	China	Cases	Log. Reg.	ChunXiang et al. (2010)
CS	China	Adm. L3	Log. Reg.	Fang et al. (2008)
CS	Thailand	Adm. L3	Log. Reg.	Gilbert et al. (2006)
CS	South Asia	Adm. L3	Log. Reg.	Gilbert et al. (2011)
CS	Bangladesh	Adm. L3	Log. Reg.	Loth et al. (2010)
CS	China	Adm. L3	Log. Reg., BRT	Martin et al. (2011)
CS	Thailand	Adm. L3	Log. Reg.	Paul et al. (2010)
CS	Vietnam	Adm. L3	Log. Reg.	Pfeiffer et al. (2007)
CS	Nigeria	Farm	Reg.	Rivas et al. (2010)
CS	Thailand	Adm. L3	Log. Reg.	Tiensin et al. (2009)
CS	Romania	Cases	Reg.	Ward et al. (2009)
CS	Romania	Cases	Log. Reg.	Ward et al. (2008b)
CS	Indonesia	Cases	Log. Reg.	Loth et al. (2011)
Regional / continental
Desc.	Europe	Cases	-	Ottaviani et al. (2010)
Desc.	Eurasia	Cases	-	Gilbert et al. (2006)
Desc.	Asia	Country	-	Park et al. (2007)
Desc.	Eurasia & Africa	Cases	-	Sengupta et al. (2007)
SP	Eurasia & Africa	Cases (wild birds)	Space-time per.	Si et al. (2009)
SP	Eurasia & Africa	Cases	K-function	Liang et al. (2011)
SP / RF	Europe	Cases	ANOVA	Reperant et al. (2010)
CC	Europe	Wetland	Log. Reg.	Iglesias et al. (2010)
CS	SouthAsia	4 km	ENN	Adhikari et al. (2009)
CS	SouthAsia	Adm. L3	Log. Reg.	Gilbert et al. (2008)
CS	Europe	Cases (wild birds)	Log. Reg.	Si et al. (2010)
CS	NorthAfrica	Cases (8 km)	ENN	Williams & Peterson (2009)
CS	Nigeria	Cases (1 km)	ENN	Williams et al. (2008)
CS	Europe	Cases	ENN	Williams et al. (2011)
Global
Desc.	-	Country	-	Kilpatrick et al. (2006)
CS	-	Country	Log. Reg.	Hogerwerf et al. (2010)