@article{fdi:010060710, title = {{H}igh number of previous {P}lasmodium falciparum clinical episodes increases risk of future episodes in a sub-group of individuals}, author = {{L}oucoubar, {C}. and {G}range, {L}. and {P}aul, {R}. and {H}uret, {A}. and {T}all, {A}. and {T}elle, {O}. and {R}oussilhon, {C}. and {F}aye, {J}. and {D}iene-{S}arr, {F}. and {T}rape, {J}ean-{F}ran{\c{c}}ois and {M}ercereau-{P}uijalon, {O}. and {S}akuntabhai, {A}. and {B}ureau, {J}. {F}.}, editor = {}, language = {{ENG}}, abstract = {{T}here exists great disparity in the number of clinical {P}. falciparum episodes among children of the same age and living in similar conditions. {T}he epidemiological determinants of such disparity are unclear. {W}e used a data-mining approach to explore a nineteen-year longitudinal malaria cohort study dataset from {S}enegal and identify variables associated with increased risk of malaria episodes. {T}hese were then verified using classical statistics and replicated in a second cohort. {I}n addition to age, we identified a novel high-risk group of children in whom the history of {P}. falciparum clinical episodes greatly increased risk of further episodes. {A}ge and a high number of previous falciparum clinical episodes not only play major roles in explaining the risk of {P}. falciparum episodes but also are risk factors for different groups of people. {C}ombined, they explain the majority of falciparum clinical attacks. {C}ontrary to what is widely believed, clinical immunity to {P}. falciparum does not de facto occur following many {P}. falciparum clinical episodes. {T}here exist a sub-group of children who suffer repeated clinical episodes. {I}n addition to posing an important challenge for population stratification during clinical trials, this sub-group disproportionally contributes to the disease burden and may necessitate specific prevention and control measures.}, keywords = {{SENEGAL}}, booktitle = {}, journal = {{P}los {O}ne}, volume = {8}, numero = {2}, pages = {e55666}, ISSN = {1932-6203}, year = {2013}, DOI = {10.1371/journal.pone.0055666}, URL = {https://www.documentation.ird.fr/hor/fdi:010060710}, }