Malaria Research and Treatment

Research Article

Selective Intermittent Preventive Treatment of Vivax Malaria: Reduction of Malaria Incidence in an Open Cohort Study in Brazilian Amazon

Table 4

Recurrence frequency in the same dwellers throughout the follow-up period.


				Clinical vivax malaria recurrence in the same dweller
Community	Period/year	Pf	Pv	APC			SPC			Total	%
				1	2	3	1	2	3

São Sebastião	Jan–Jun/2008	6	21	—	—	—	12	3	1	5	23.8
	Jul–Dec/2008	5	52	—	—	—	29	7	3	13	25.0
	Jan–Jun/2009	3	32	2	1	—	16	3	2	8	25.0
	Jul–Dec/2009	—	25	4	—	—	10	4	1	6	24.0
	Jan–Jun/2010	2	26	3	2	1	8	1	2	9	34.6
	Jul–Dec/2010	1	40	3	—	—	20	7	1	9	22.5
	Jan–Jun/2011	—	20	3	—	—	9	4	—	4	20.0
	Jul–Dec/2011	—	43	2	2	1	19	6	1	12	27.9
	Jan–Jun/2012	—	25	3	1	—	9	4	1	7	28.0
	Jul–Dec/2012	—	24	1	—	1	10	5	—	7	29.2

Vila Amazonas	Jan–Jun/2008	4	52	—	—	—	25	12	1	14	26.9
	Jul–Dec/2008	1	34	—	—	—	23	4	1	6	17.6
	Jan–Jun/2009^A	1	49	2	—	—	34	5	1	7	14.3
	Jul–Dec/2009	—	30	1	—	—	23	3	—	3	10.0
	Jan–Jun/2010	—	5	—	—	—	5	—	—	—	—
	Jul–Dec/2010	—	4	—	—	—	4	—	—	—	—
	Jan–Jun/2011	1	2	—	—	—	2	—	—	—	—
	Jul–Dec/2011	1	1	—	—	—	1	—	—	—	—
	Jan–Jun/2012	—	—	—	—	—	—	—	—	—	—
	Jul–Dec/2012	—	—	—	—	—	—	—	—	—	—

Cachoeira do Teotônio	Jan–Jun/2008	6	49	1	—	—	34	7	—	7	14.3
	Jul–Dec/2008	2	64	4	—	—	39	6	3	12	18.8
	Jan–Jun/2009	—	48	3	1	—	33	5	—	6	12.5
	Jul–Dec/2009^B	—	78	6	—	—	39	9	5	19	24.4
	Jan–Jun/2010	2	77	3	—	—	47	12	1	14	18.2
	Jul–Dec/2010^C	—	76	2	1	—	39	15	1	18	23.7
	Jan–Jun/2011	3	39	—	—	—	27	6	—	6	15.4
	Jul–Dec/2011	2	27	2	—	—	21	2	—	2	7.4
	Jan–Jun/2012	—	16	1	—	—	15	—	—	—	—
	Jul–Dec/2012	—	12	1	—	—	11	—	—	—	—

Pf: Plasmodium falciparum incidence; Pv: Plasmodium vivax incidence. APC: asymptomatic Plasmodium carrier. SPC: symptomatic Plasmodium carrier. 1, 2 or 3: number of clinical vivax malaria episode in the same dweller (the first episode “1” is a primary episode). Total: total number of recurrence, excluding the primary episode. %: percent relative to incident cases. treatment and SIPT beginning (June/2009). treatment (July/2009). beginning (August/2010). (—): numeric data equal zero, not rounding result.