Notes from the Field: Undiagnosed Tuberculosis During Pregnancy Resulting in a Neonatal Death — United States, 2021

Investigation and Outcomes

The infant’s mother underwent in vitro fertilization for infertility in her home country of India, which accounted for 27% of global TB incidence in 2022^¶; she returned to the United States 1 month before delivery. During U.S. prenatal visits, she experienced insufficient weight gain, hyperemesis, and chronic cough, which was attributed to gastroesophageal reflux disease. Results for standard pregnancy laboratory tests were normal; no test for TB infection was performed. The mother experienced premature rupture of membranes at 33 weeks’ gestation followed by an uncomplicated spontaneous vaginal delivery of a healthy-appearing newborn and a normal-appearing placenta.

The newborn had 1- and 5-minute Apgar scores of 7 of 10 and 9 of 10, respectively, and weighed 5 lbs 6.7 oz (2,460 g) (90th percentile for gestational age). After receiving inpatient care for prematurity, the newborn was discharged home on the 14th day of life. However, shortly after hospital discharge, the infant developed labored breathing, became progressively ill, and was readmitted 4 days later (the 18th day of life) in septic shock, which was managed with endotracheal intubation and admission to an intensive care unit. Chest radiography demonstrated overall ground-glass–appearing infiltrates, suggesting inflammation, and loss of lung volume. On the basis of these findings, the mother’s chronic cough, and her origin from a country with high TB incidence, pulmonary TB was suspected. The infant’s gastric aspirate samples contained acid-fast bacilli on smear microscopy (an indicator of pulmonary TB) and grew Mycobacterium tuberculosis in culture. TB treatment** was commenced on the 22nd day of life. Initially, the infant’s condition improved, but 12 days after the diagnosis of TB, a pneumothorax was identified in the context of sudden respiratory deterioration. Respiratory treatments were not effective, and in alignment with the family’s wishes, support was withdrawn with institution of comfort measures. The infant died on the 42nd day of life of TB-related respiratory failure.

The mother’s chest radiograph demonstrated bilateral reticular nodular opacities. Acid-fast bacilli were identified on sputum smear microscopy, and a sputum sample tested positive for M. tuberculosis by polymerase chain reaction; a sputum culture was also positive. The mother recovered while completing a full course of treatment for drug-susceptible pulmonary TB, the same treatment that would have been recommended if a diagnosis had occurred during pregnancy. The only other household contact was determined not to have TB disease or latent TB infection after evaluation. This activity was reviewed by CDC, deemed research not involving human subjects, and was conducted consistent with applicable federal law and CDC policy.^††