Table 1: Association between rainfall and Giardia prevalence: average seasonal rainfall in the study region (Indian Meteorological Department Database), average Giardia detection rates, and the percentage of Giardiasis among all diarrheal cases.

SeasonAverage rain (mm)Monthly average G. duodenalis-positive casesTotal diarrhea casesMonthly average G. duodenalis-positive (%)

Premonsoon/summer 08153.4117315.05
Monsoon 081291.712.75103.512.02
Postmonsoon 0870.312110.310.1
Winter 093.44.5914.8
Premonsoon/summer 09251.811.71239.26
Monsoon 09971.518.7514113.5
Postmonsoon 0995.75.773.37.73
Winter 1016.62346.3
Premonsoon/summer 10143.77.36710.83
Monsoon 10787.4448.258.32
Postmonsoon 10138.84.74810.3
Winter 115.4437.510.7
Premonsoon/summer 11245.2551.710.03
Monsoon 111391.61.7535.54.87
Postmonsoon 1129.52.7329.6