Trend of Malaria Burden Among Residents of Kisii County, Kenya After More Than a Decade Usage of Artemisinin Combined Therapies, 11–Year Laboratory Based Retrospective Study

Figures & data

Figure 1 Study area. (A) Showing the entire country, Kenya. (B) Shows Nyanza region where Kisii county is located. (C) Shows sampled sub counties of Kisii county.

Table 1 Showing demographic characteristics of malaria cases

Year	Demographics		Suspected Cases	Confirmed Cases	Prevalence (%) (95% CI)
2011	Gender	Male	1281	266	21 (19.03–22.17)
		Female	2365	673	28 (27.03–30.07)
	Age (years)	0–5	482	83	17 (16.32–19.84)
		6–11	937	185	20 (18.53–22.02)
		12–18	987	254	26 (24.81–28.04)
		>18	1241	417	34 (33.89–37.01)
2012	Gender	Male	986	161	16 (15.05–18.02)
		Female	2130	767	30 (28.25–32.12)
	Age (years)	0–5	474	53	11 (9.74–12.72)
		6–11	718	214	30 (28.76–32.06)
		12–18	871	269	31 (28.91–33.89)
		>18	1053	392	78 (76.05–80.02)
2013	Gender	Male	1228	271	22 (21.04–24.09)
		Female	1527	728	48 (46.26–50.06)
	Age (years)	0–5	341	76	22 (20.89–24.13)
		6–11	672	221	33 (31.87–35.86)
		12–18	824	231	28 (26.54–30.25)
		>18	918	471	52 (50.35–54.52)
2014	Gender	Male	953	421	44 (42.85.–46.05)
		Female	1540	718	47 (45.47–49.06)
	Age (years)	0–5	410	182	44 (42.03–45.98)
		6–11	518	96	19 (17.95–21.25)
		12–18	623	417	70 (68.5–71.75)
		>18	942	444	47 (46.85–48.75)
2015	Gender	Male	1423	186	13 (12.08–15.03)
		Female	2317	841	36 (34.86–38.06)
	Age (years)	0–5	396	78	20 (19.02–21.65)
		6–11	584	176	30 (28.71–32.01)
		12–18	1418	642	45 (43.32–46.45)
		>18	1342	131	10 (9.85–11.35)
2016	Gender	Male	1290	510	40 (38.35–42.08)
		Female	2186	577	26 (24.20–28.14)
	Age (years)	0–5	641	238	37 (35.85–38.95)
		6–11	784	242	31 (29.75–32.02)
		12–18	923	228	25 (24.65–27.85)
		>18	1128	379	34 (33.01–36.85)
2017	Gender	Male	974	30	3 (1.84–3.26)
		Female	1489	780	24 (22.65–26.11)
	Age (years)	0–5	640	218	34 (32.05–35.95)
		6–11	618	185	30 (28.86–31.75)
		12–18	423	121	29 (27.45–31.05)
		>18	782	286	37 (35.81–28.25)
2018	Gender	Male	1164	89	8 (6.54–10.06)
		Female	2581	436	17 (16.92–18.31)
	Age (years)	0–5	993	114	12 (10.05–14.24)
		6–11	518	119	23 (21.42–25.75)
		12–18	892	132	15 (13.73–16.08)
		>18	1342	160	12 (11.08–14.95)
2019	Gender	Male	1321	322	17 (13.04–18.27)
		Female	2582	107	12 (10.37–14.55)
	Age (years)	0–5	565	121	21 (19.35–22.96)
		6–11	872	176	20 (18.32–21.08)
		12–18	1048	143	14 (12.01–15.00)
		>18	1418	189	13 (11.75–14.75)
2020	Gender	Male	565	43	8 (6.75–10.37)
		Female	3219	103	47 (46.14–49.03)
	Age (years)	0–5	746	42	6 (5.35–7.87)
		6–11	723	24	3 (1.73–4.05)
		12–18	1343	31	2 (58.25–61.35)
		>18	972	49	5 (3.35–6.08)
2021	Gender	Male	381	80	21 (19.85–23.11)
		Female	863	138	16 (14.43–18.21)
	Age (years)	0–5	154	39	25 (23.85–27.09)
		6–11	148	98	66 (63.75–68.05)
		12–18	324	46	14 (12.58–15.07)
		>18	618	35	6 (5.06–7.35)

Figure 2 Showing total sub-county confirmed malaria cases.

Figure 3 Showing annual temporal malaria trends.

Figure 4 Showing annual malaria sub-county positivity rates.

Figure 5 Showing the seasonal Malaria variations.