Table 1. The distribution of the 56 children (plateauers and non-plateauers) who had PCR positive and negative annual cross-sectional survey results from 2007 to 2015.

	Year
All	2007	2008	2009	2010	2011	2012	2013	2014	2015
Positive	14	27	23	29	23	24	19	26	23
Negative	0	0	32	36	33	32	35	29	33
% Positive	100.00	100.00	41.82	44.62	41.07	42.86	35.19	47.27	41.07
Plateauer	2007	2008	2009	2010	2011	2012	2013	2014	2015
Positive	8	15	11	17	9	15	14	16	16
Negative	0	0	10	5	13	7	8	6	6
% Positive	100.00	100.00	52.38	77.27	40.91	68.18	63.64	72.73	72.73
Non-Plateauer	2007	2008	2009	2010	2011	2012	2013	2014	2015
Positive	6	12	12	12	14	9	5	10	7
Negative	0	0	22	21	20	25	27	23	27
% Positive	100.00	100.00	35.29	36.36	41.18	26.47	15.63	30.30	20.59