Table 2.

Transition matrix of Loa loa microfilarial density in 2015 (left column) versus that in 2017 (top row), in individuals treated with ivermectin in 2015

	0	1–100	101–500	501–2000	2001–10 000	10 000–20 000	>20 000	Total
0	5274	11	201	38	7	0	0	5531
1–100	3	0	0	0	0	0	0	3
101–500	204	0	31	20	6	0	0	261
501–2000	179	1	54	40	14	0	0	288
2001–10 000	144	0	74	130	82	2	2	434
10 001–20 000	14	0	9	50	73	7	0	153
20 000–26 000	2	0	1	7	12	0	0	22
Total	5820	12	370	285	194	9	2	6692

Data are the number of individuals treated with ivermectin in 2015 within each recorded range of microfiliarial density (in microfilariae per mL) in 2015 versus that in 2017.