CD40LG and scrub typhus: In Laos, a study published by Chansamouth et al. [37] on 250 pregnant women presenting with PFI (4–7 days of illness after hospital admission), RDT (IgM), micro-immunofluorescence assays (IFA) and PCR for scrub typhus and murine typhus were performed, in addition to culture of blood and urine and clinical evaluation.