Table 2. Temporal estimates of schistosome burdens of fifteen school aged children enrolled in a mass drug administration program in which they are treated annually.

	Year 1				Year 2				Year 3				Year 4
Patient	n	Nb	CI	Nc	n	Nb	CI	Nc	n	Nb	CI	Nc	n	Nb	CI	Nc
1	96	172	130–233	344–1720	81	20	12–38	40–200	81	158	117–220	316–1580	103	210	160–285	420–2100
2	89	151	114–206	302–1510	68	127	92–182	254–1270	81	120	89–168	240–1200	76	97	72–137	194–970
3	73	99	72–142	198–990	86	149	112–203	298–1490	86	52	36–77	104–520	81	209	149–301	418–2090
4	68	142	103–205	284–1420	73	195	142–289	390–1950	76	154	108–220	308–1540	107	103	75–141	206–1030
5	144	160	125–206	320–1600	81	24	14–43	48–240	103	118	88–160	236–1180	63	122	87–175	244–1220
6	128	153	120–199	306–1530	150	246	195–316	492–2460	139	256	201–334	512–2560	78	98	71–140	196–980
7	58	81	56–118	162–810	57	67	46–100	134–670	83	28	17–49	56–280	60	107	76–160	214–1070
8	68	130	93–186	260–1300	60	136	95–200	272–1360	53	172	113–298	344–1720	85	117	88–161	234–1170
9	58	75	51–112	150–750	68	114	83–162	228–1140	92	127	94–172	254–1270	70	186	135–276	372–1860
10	87	166	125–230	332–1660	81	108	78–149	216–1080	45	32	20–54	64–320	74	164	116–239	328–1640
11	57	8	4–23	16–80	87	247	183–346	494–2470	46	53	34–83	106–530	147	47	32–72	94–470
12	74	115	83–159	230–1150	86	174	129–246	348–1740	45	132	84–253	264–1320	118	251	195–331	502–2510
13	73	125	90–174	250–1250	105	243	186–327	486–2430	90	195	144–270	390–1950	87	187	138–256	374–1870
14	55	90	61–132	180–900	70	179	129–278	358–1790	67	123	88–178	246–1230	81	80	56–115	160–800
15	87	123	92–169	246–1230	81	175	128–240	350–1750	77	202	148–293	404–2020	92	140	104–189	280–1400

For each patient, the number of miracidia genotyped (n), the estimated effective number of breeders (N_b) and 95% confidence interval (CI) are given. For each patient, the schistosome census size (N_c) is estimated using an N_b/N_c ratio of 0.1 to 0.5.