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Table 1 Seasonal distribution of the number of NE cases every 4 weeks in Belgium.

From: Relating increasing hantavirus incidences to the changing climate: the mast connection

Week 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
1 – 4   13 5 2 8 5 4 7 7 5 17 4 16 28
5 – 8   17 2 3 6 9 7 4 4 0 22 9 14 28
9 – 12   11 3 2 4 7 9 0 9 3 14 16 12 16
13 – 16   11 4 1 7 2 10 1 4 2 19 18 27 23
17 – 20   15 5 6 14 4 19 3 21 1 33 13 35 20
21 – 24   23 1 4 9 2 7 3 9 2 45 18 29 37
25 – 28   19 3 5 18 8 15 5 16 5 63 14 21  
29 – 32   33 3 5 30 3 14 5 11 4 56 18 18  
33 – 36   23 1 6 18 6 11 4 9 4 37 8 26  
37 – 40   18 9 5 5 7 1 8 11 3 26 14 26  
41 – 44   11 9 3 1 5 7 3 10 7 12 9 20  
45 – 48   21 6 4 2 6 2 5 3 4 17 9 31  
49 – 52   9 4 3 2 4 4 3 8 6 11 13 23  
  *    *   *   *   *    *  
  1. Mast years are indicated with *. Weeks 1–8 and 49–52 are winter periods. Weeks 9–20 are in spring. Weeks 21–36 are in summer. Weeks 37–48 are in autumn.