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Congenital tuberculosis in an extremely preterm infant and prevention of nosocomial infection.

K. Tamura,H. Kawasuji,S. Tachi,Yukako Kawasaki,Mitsuhide Nagaoka,M. Makimoto,I. Sakamaki,Yoshihiro Yamamoto,Jun-ichi Kanatani,J. Isobe,S. Mitarai,N. Yoneda,S. Yoneda,S. Saito,Taketoshi Yoshida

Published 2019 in Journal of Infection and Chemotherapy

ABSTRACT

Congenital tuberculosis is a rare disease, especially in non-endemic countries. We present a preterm infant who developed congenital tuberculosis in a neonatal intensive care unit (NICU). The male patient, weighing 1140 g was born by cesarean section at 26 weeks gestation. The baby's respiratory condition suddenly deteriorated at 18 days old, and he was diagnosed with congenital tuberculosis after Gram stain revealed "ghost bacilli" in his tracheal aspirate. The mother, who was born in an endemic country, had fever with unknown cause during labor and was diagnosed with miliary tuberculosis after the infant was diagnosed. Both were successfully treated for tuberculosis with a four-drug regimen. The genotyping profiles of Mycobacterium tuberculosis were identical in both mother and baby based on variable number of tandem repeat (VNTR) analysis. The lineage was considered to be East-African Indian. To prevent nosocomial infection in the NICU, 23 potentially exposed infants received isoniazid for 2 months. Two infants showed a transient liver enzyme elevation that seemed to be due to isoniazid. For 10 months after the incident, there were no infants and medical staff who developed tuberculosis. Although the incidence of tuberculosis has steadily decreased in Japan, the percentage of foreign-born individuals has increased yearly, especially those of reproductive age. The evaluation of active tuberculosis should be considered in pregnant women with unexplained fever, history of tuberculosis, or emigration from high-burden areas.

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