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Table 2 Characteristics of measles cases within and outside each space-time cluster identified during the 2010 measles outbreak in Lusaka

From: Spatial clustering of measles cases during endemic (1998–2002) and epidemic (2010) periods in Lusaka, Zambia

Variable Time Period 1: April 6-May 5 Time period 2: Aug 4- Sept 2 Time period 3: Oct 3-Nov 1 Total
Cluster 1 Outside cluster 1 Cluster 2 Outside cluster 2 Cluster 3 Outside cluster 3 All cases 2010
Number of Cases 62 36 58 54 17 49 1,134
% Male 42% 44% 40% 54% 53% 49% 52%
Age in months (median, IQR) 13 (7,32) 24 (12,55) 9 (6, 57) 9 (6, 33) 12 (7,64) 13 (7,43) 12 (7,29)
HIV infection status        
  Infected 2 (3%) 0 (0%) 1 (2%) 6 (11%) 3 (18%) 3 (6%) 41 (4%)
  Exposed 4 (7%) 3 (8%) 10 (18%) 6 (11%) 2 (12%) 5 (10%) 100 (9%)
  Not infected 51 (84%) 33 (92%) 39 (70%) 38 (72%) 11 (65%) 33 (67%) 905 (80%)
  Unknown 4 (7%) 0 (0%) 6 (11%) 3 (6%) 1 (6%) 8 (16%) 80 (7%)
Measles vaccination status        
  Vaccinated 16 (26%) 8 (22%) 10 (18%) 8 (15%) 2 (12%) 8 (16%) 221 (20%)
  Not Vaccinated 36 (58%) 21 (58%) 31 (54%) 31 (59%) 8 (47%) 25 (51%) 618 (55%)
  Unknown 10 (16%) 7 (19%) 16 (28%) 14 (26%) 7 (41%) 16 (33%) 286 (25%)