Second National Communications Note the similarity of this and the succeeding Malaria graph of the Philippines during the same period 2007-2008 where it shows that the year 2007 had more cases than 2008. It was recorded as a warmer year. Arthropods such as mosquitoes, ticks, and fleas are cold blooded and therefore sensitive to subtle changes in temperature and humidity.40 Graph 8.Malaria Cases by Month Philippines, 2007 vs. 2008 400 350 300 250 200 150 100 50 0 J F M A M J J A S O N D 2008 97 77 127 56 74 66 132 127 28 17 5 2 2007 173 229 284 380 292 293 259 152 78 67 59 66 Graph 9. Malaria Cases by Year Philippines, 2003-2008 No of Cases 2500 2000 1500 1000 500 0 Cases 2003 2004 2005 2006 2007 2008 2268 1588 1769 1283 2334 808 Ye a r 40 (Gubler D, Reiter P, Ebi K, Yap W, Nasci R, Patz J. Climate variability and change in the United States: potential impacts on vector and rodent-borne diseases. Environ Health Perspect 2001; 109(suppl 2): 223-243 38