Avian influenza infection dynamics under variable climatic conditions, viral prevalence is rainfall driven in waterfowl from temperate, south-east Australia

Table 1 Odds ratios (OR) and AICs for the best fitting generalized linear models of the effects of bird number of five waterfowl species on AIV prevalence

Species	Seasonality (breeding area)	Species number OR	AIC
Australian Shelduck	Seasonal (south-eastern Australia)	1.91***	322.11
Chestnut teal	Seasonal (south-eastern Australia)	1.09	383.60
Grey teal	Non-seasonal (inland)	0.40***	272.49
Pacific black duck	seasonal (south-eastern Australia)	0.94	384.07
Pink-eared duck	Non-seasonal (inland)	0.56***	316.13

An OR > 1 indicates a positive, whereas an OR < 1 indicates a negative effect of the explanatory variable (i.e. OR > 1 means that AIV prevalence was greater when bird numbers were higher and OR < 1 means that AIV prevalence was greater when bird numbers were lower). Stars indicate significance level: ***p < 0.001.

ISSN: 1297-9716