 The clinical features and prevalence of tropical rickettsial illnesses such as murine and scrub typhus in Bangladesh are unknown. Following testing for malaria, patients with undifferentiated fever are frequently treated empirically for typhoid or diagnosed clinically with a viral fever. Since murine and scrub typhus are common causes of fever in other countries in the region, it is likely they are prevalent in Bangladesh. Murine and scrub typhus may be treated cheaply and effectively with doxycycline. 