Fig. 1
From: Characterizing measles transmission in India: a dynamic modeling study using verbal autopsy data
Weekly measles deaths recorded over the period 2000–2003, for India (a), Bihar (b), and Uttar Pradesh (c), since the day of the first measles death (source Million Death Study), with their associated frequency spectra with strength of harmonic on y-axis and period up to 2 years on x-axis. The black lines correspond to the raw data and corresponding spectra, while the red line denotes the data and spectra post-detrending with the Baxter-King filter