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  • Title: Murine Typhus in South Texas Children: An 18-year Review.
    Author: Howard A, Fergie J.
    Journal: Pediatr Infect Dis J; 2018 Nov; 37(11):1071-1076. PubMed ID: 29465481.
    Abstract:
    BACKGROUND: Murine typhus is a zoonotic infection caused by Rickettsia typhi that remains endemic in South Texas. In 2003, only 9 Texas counties reported murine typhus compared with 41 counties in 2013. METHODS: A retrospective study of children discharged with a confirmed diagnosis of murine typhus from Driscoll Children's Hospital between January 1998 and September 2016. RESULTS: Two hundred thirteen children (113 female) 3 months through 19 years of age (mean, 11.2 ± 4.5 years) were identified. Cases occurred throughout the year. Children were admitted after a mean of 7.7 ± 5.3 days of fever. The most common symptoms were fever (100%), poor appetite (71.9%), malaise/fatigue (69.0%) and headache (67.6%). The most common laboratory abnormalities were elevated C-reactive protein, hypoalbuminemia, elevated erythrocyte sedimentation rate, elevated transaminases and elevated band count with normal total white blood cell count. Children defervesced in a mean of 31.87 ± 21.36 hours after initiation of doxycycline. Hospitalization lasted for a mean of 2.7 ± 1.8 days when children were administered doxycycline within 24 hours of admission compared with, 4.1 ± 1.8 days, P ≤ 0.0001 when started later. Eleven patients (5.1%) were admitted to the pediatric intensive care unit and were older, P = 0.0009. No children died. CONCLUSIONS: Murine typhus is endemic in South Texas. Children who were treated earlier with doxycycline had a shorter hospitalization than were those who began therapy later. Recognition of murine typhus is important to prevent delay in treatment and development of complications.
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