A constant contact community-based epidemiological investigation (C3EI) as part of malaria elimination demonstration project, Mandla district, Madhya Pradesh, India

Table 1 Fever and malaria episodes in 36 months longitudinal community surveillance during 2018–2020

Episodes	Fever cases		Malaria positive		PF-PF			PV-PV			MIX-MIX			PF-PV			MIX-PV			PF-PF-PV			MIX-MIX-PV
Episodes	nU	nF	nU	nM	nU	nM	rMDI	nU	nM	rMDI	nU	nM	rMDI	nU	nM	rMDI	nU	nM	rMDI	nU	nM	rMDI	nU	nM	rMDI
0	726,015
1	172,931	172,931	363	363	248	248		101	101		14	14
2	39,797	79,594	52	104	33	66	296 (13–819)	16	32	205.4 (23–504)				2	4	90 (20–160)	1	2	130
3	10,544	31,632	5	15	3	9	54 (45–59);180 (108–323)^a													1	3	21;157	1	3	34;123
4	4137	16,548	2	8	1	4	59;349;535	1	4	77;121;144
5 +	3371	21,872						0	0
Total	230,780	322,577	422	490	285	327		118	137		14	14		2	4		1	2		1	3		1	3

nU Unique Persons, nF Total number of fever cases tested, nM Total malaria cases, rMDI Mean Days Interval (range), PF P. falciparum, PV P. vivax; MIX: P. falciparum + P. vivax
^aThe time interval between three episodes of ‘Pf’ infections was 54 days (range 45 to 59 days) from first to second infection in the same individual. It was 180 days (range 108–323 days) from first to third infection in the same individual. The mean days interval (range) interpretation should be done using this example for all Tables 1, 2, 3, 4, 5, 6

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