Reported symptoms and medical consumption.

<p>CHIK+, persons with a history of CHIKV infection confirmed by serology (n = 199); CHIK–, persons confirmed as seronegative for CHIKV (n = 199); RR, relative risks; CI, confidence interval.</p>*<p>RR, relative risks controlling for stratification criteria.</p>†<p>Exact Mac Nemar test.</p

Characteristics of the study population (199 matched pairs).

<p>Characteristics of the study population (199 matched pairs).</p

Percentage of patients (n = 199) fully recovered, shown by age group.

<p>The long dash followed by the short dash represents patients aged under 30; the dash represents patients aged 30 to 59 and the solid line represents those aged 60 and over. Recovery is fast in young subjects.</p

Quality of life assessment by the SF-12 of subjects with a history of Chikungunya virus infection compared with uninfected subjects.

<p>CHIK+, persons with a history of CHIKV infection confirmed by serology (n = 162); CHIK–, persons confirmed as seronegative for CHIKV (n = 162).</p>*<p>Wilcoxon's rank test for paired samples.</p>†<p>After Bonferroni correction, the statistical significance was then set at p = 0.01 with a bilateral formulation.</p