Fig. 3

Trend in the seroconversion rate, all-cause mortality rate and parasite prevalence in Farafenni, The Gambia. Linear regression of MSP-1₁₉ seroconversion rate (SCR) estimates per survey using the reversible catalytic model (with a fixed common seroreversion rate across all five surveys: 0.028 year⁻¹; solid circles and solid line), SCR estimates per 2 years using the smoothed model (open circles), linear regression of all-cause under 5-year-old mortality rate per 1000 person-years (U5MR) as previously published by Jasseh et al. [28] (squares and dashed line), and parasite prevalence (PR) per survey (as measured by polymerase chain reaction in the 2011 survey and microscopy of blood films in all other surveys; triangles). Survey data are from five surveys in the Farafenni area between 1988 and 2011