Table 2. Temporal clusters of malaria cases in Loreto Region, 2002–2013.

	Total		P. vivax		P. falciparum
	Cluster.period	IRR*	Cluster period	IRR*	Cluster period	IRR*
2002	Feb–Jul	1.47	Feb–Jul	1.46	Jan–Jun	1.59
2003	Feb–Jul	1.62	Feb–Jul	1.64	Feb–Jun	1.56
2004	May–Sep	1.36	May–Sep	1.40	Feb–Jul	1.24
2005	Feb–Jun	1.52	Feb–Jun	1.63	Feb–Jul	1.27
2006	Apr–Jun	1.91	Apr–Jun	1.95	Apr–Jun	1.70
2007	Mar–Aug	1.84	Mar–Aug	1.88	Mar–Aug	1.72
2008	Feb–Jul	1.50	Feb–Jul	1.61	Apr–May	1.20
2009	Mar–Aug	1.77	Jun–Aug	1.88	Mar–Jun	1.53
2010	Jan–Jun	1.62	Jan–Jun	1.71	Feb–Jul	1.45
2011	May–Sep	1.77	May–Sep	1.61	Jun–Sep	1.75
2012	May–Jul	2.18	May–Jul	2.33	Jul	1.89
2013	Apr–Jul	1.72	Apr–Jul	1.77	May–Jul	1.63

IRR = incidence rate ratio (compared to all other months) estimated by purely temporal analysis using Satscan. *All p-values were <0.001