Second National Communications No significant association found between cholera and mean temperature. The same is true between cholera and relative humidity. Climate Change Paramaters 46 Cholera r* p* Rainfall (mm/day) .318 .000 Mean Temperature (°C) .060 .439 Relative Humidity .147 .067 Graph 20. Dengue Cases and Rainfall by Month, Philippines, 1993-2006 10000 Dengue Rainfall 10000 8000 8000 6000 6000 4000 4000 2000 2000 0 1Ja n 1- -93 Ju n 1- -93 No v 1- -93 Ap r1- 94 Se p 1- -94 Fe b9 1- 5 Ju 1- l-95 De 1- c-95 M ay 1- -97 Oc 1- t-97 M a 1- r-98 Au g 1- -98 Ja n 1- -99 Ju n 1- -99 No v 1- -99 Ap r1- 00 Se p 1- -00 Fe b 1- -01 Se p 1- -01 Fe b 1- -03 Au g1- 03 Ja n 1- -04 Ju n 1- -04 No v1- 04 Ju 1- l-05 Fe b 1- -06 Au g06 0 Graph 20 shows that Dengue is positively associated with the volume of rainfall (r = .312, p <.01)*. The number of dengue cases is high when the volume of rainfall is high.