Table 1 Description of the three cohorts
From: Seroepidemiololgy of rickettsioses in Sri Lanka: a patient based study
Patient group | Time frame | Number of samples tested | Test/tests used | Basic demographic data |
|---|---|---|---|---|
   Cohort 1 | October 2007 to December 2008 | 141 | Scrub typhus IgM and IgG ELISA | Age 20.7 ± 19.6 years |
| Â | Â | Â | Â | 49% Female |
| Â | Â | Â | Â | 51% Male |
   Cohort 2 | January 2009 to December 2009 | 262 | Scrub typhus IgM and IgG ELISA and Spotted fever IgM and IgG ELISA | Age 20.5 ± 19.9 years |
| Â | Â | Â | Â | 49% Female |
| Â | Â | Â | Â | 51% Male |
   Cohort 3 | January 2010 to February 2011 | 212 | IFA--screening for group specific antibodies (Scrub typhus, Spotted fever and Typhus group)--IgM and IgG* | Age 15.1 ± 19.6 |
| Â | Â | Â | Â | 51% Female |
| Â | Â | Â | Â | 49% Male |