Antibiotic Response to Pediatric Scrub Typhus in South India: Is Clinical Failure to Azithromycin to be Worried?

ABSTRACT Background Scrub typhus is typically associated with a rapid defervescence and clinical improvement within 48 h of initiation of appropriate antibiotics. But increasing reports of resistance to anti-rickettsial medications in scrub typhus are being reported in the literature. Methods This is a retrospective observational study of children up to the age of 14 years admitted between July 2017 and March 2020, to a private medical college hospital in southern part of India. The aim of this study was to compare the clinical response to antibiotic therapy with doxycycline and azithromycin in pediatric scrub typhus infection. Results One hundred thirty-eight children with scrub typhus infection were included for analysis. The median fever control time (h) was 12 (IQR = 6–29) and 24 (IQR = 10–52) with doxycycline and azithromycin respectively (p