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Table 2 Monthly mosquito indices and occurrence of dengue in Dak Lak province

From: Ecological factors associated with dengue fever in a central highlands Province, Vietnam

Month House Indexa Container Indexa Breteau Indexa No. of casesb
Jan 3.7 2.9 4.8 27
Feb 4.2 3.3 5.4 20
Mar 3.9 3.4 5.4 22
Apr 4.6 3.4 5.9 43
May 5.6 4.1 6.9 183
Jun 6.6 4.9 9.1 302
Jul 7.0 5.5 10.1 448
Aug 7.4 5.8 10.1 593
Sep 7.4 5.8 9.6 1007
Oct 7.1 6.2 9.7 459
Nov 5.6 3.9 6.9 281
Dec 4.7 3.2 5.7 117
  1. Notes:
  2. a Data are averages across 5 years (2004-2008).
  3. b Data are total number of cases tallied from 2004 to 2008.