Table 1.

Median values of predictors, by year, and proportion of countries with endemic cholera under two definitions over the following 5-year period

Predictor	1990	1995	2000	2005
Water	70%	74%	79%	79%
Sanitation	40%	40%	47%	43%
Infant Mortality*	64	62	59	49
Proportion of nations considered endemic	1991–1995 N (%)	1996–2000 N (%)	2001–2005 N (%)	2006–2010 N (%)
WHO (1)	55 (57)	54 (56)	44 (45)	41 (42)
Modified (250)	37 (38)	37 (38)	23 (24)	24 (25)

^*Deaths under age 1 per 1,000 persons.