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Results: 2

1.
Fig. 1

Fig. 1. From: Spatial Dynamics of Meningococcal Meningitis in Niger: observed patterns in comparison with measles.

(a) Seasonal outbreaks of meningococcal meningitis (red) align with those of measles (grey) and both are strongly out of phase with rainfall (blue). Shaded areas are +/− 1 standard deviation. (b) Map of Africa with the meningitis belt shaded in red (adapted from [48]) and Niger outlined in blue (c) Pair wise correlation by distance for all districts for reported meningococcal meningitis incidence (red, regional synchrony = 0.35(0.26,0.43)) and reported measles incidence (black, regional synchrony = 0.31(0.26,0.37)).

N Bharti, et al. Epidemiol Infect. ;140(8):10.1017/S0950268811002032.
2.
Fig. 2

Fig. 2. From: Spatial Dynamics of Meningococcal Meningitis in Niger: observed patterns in comparison with measles.

(a) Number of fadeouts weeks per year against population size for each district for meningococcal meningitis. Grey line is best-fit line. Grey points show districts with negative residuals. (b) Same as a for measles, adapted from [5]. (c) Map of Niger showing all 38 districts, including 3 urban districts. The 15 districts that have negative residuals for both measles and meningococcal meningitis are shaded in grey. (d) Residuals from a plotted against residuals from b, grey points show the 15 joint potential hotspots (grey districts from c), size of points correlates to district population size. (e) Residuals of mean length of interepidemic periods on population size for the 15 joint potential hotspots in grey (grey districts from c) and all other districts in black for meningococcal meningitis (left) and measles (right, adapted from [5]).

N Bharti, et al. Epidemiol Infect. ;140(8):10.1017/S0950268811002032.

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