Rapid diagnostic test and laboratory procedure A scrub typhus rapid test will be performed on site by using the InBios Scrub Typhus Detect IgM Rapid Test. Tests will be read by two independent readers and results recorded as positive, negative or invalid. In case of invalid test result, another test will be performed using a new test strip. If there is any disagreement between two readers, the lead investigator at the site will decide the test result and the test will be photographed.