Figure 2
From: The spatial and temporal patterns of falciparum and vivax malaria in Perú: 1994–2006
The weekly time series of the number of Plasmodium falciparum (1994–2006) and P. vivax (1999–2006) in Perú during the period 1994–2006 (in logarithmic scale) and the corresponding wavelet power spectrum for both malaria time series. For both time series, annual cycles have the highest power. There is also a strong triennial pattern for the P. falciparum series during 1998–2003 and a strong biennial cycle for P. vivax during 2002–2004.