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. 2005 Dec;142(3):539–547. doi: 10.1111/j.1365-2249.2005.02941.x

Table 1. Study population.

Groups No. of subjects Age (mean ± s.d.) Age range Sex (male/female)
NI 8 32·14 ± 12·46 21–59 3/5
INF 16 27·61 ± 17·46 9–58 6/10
RR 23 27·21 ± 21·04 10–71 10/13
SR 17 25·68 ± 16·64 9–69 7/10
NR 19 49·36 ± 16·35 11–73 9/10
All 83 32·4 ± 16·79 9–73 35/48

NI: non-infected individuals; INF: infected individuals; RR: individuals resistant to Schistosoma mansoni reinfection; SR: individuals susceptible to S. mansoni reinfection; NR: naturally resistant individuals.