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. 2016 Sep 7;5(1):98. doi: 10.1186/s40249-016-0194-x

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© The Author(s). 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 7 — Association between altitude or EIR and rate of seroconversion from M.RCAg-1 seronegative to seropositive. a Plot of estimated seroconversion rates(λ) (calculated as for Fig. 6) against altitude. The line and R² value are for the least-squares fitted functionλ = 0.0534e^-0.002h, where h is the altitude in m. b Plot of log(λ) against log (predicted EIR). The least-squares fitted line has the equation Log₁₀(λ) = 0.01*Log₁₀(EIR)-2.3653. EIR was calculated from the equation log(EIR) = 2.523–0.0025 * altitude [35]