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Morphine Oral herpes simplex virus reactivation in mother leading to oral herpes simplex virus infection in neonate: 2 case reportsA 37-year-old woman developed reactivation of oral herpes simplex virus (HSV) after receiving intrathecal morphine for caesarean delivery, and a 5-day-old male neonate who possibly acquired a localized oral HSV from his mother [not all outcomes stated].The mother had a history of oral HSV with recurrences approximately twice a year. She underwent elective caesarean delivery at 38 weeks of gestation. She was given intrathecal morphine 150µg along with spinal anaesthesia for caesarean delivery. There was no active oral HSV noted at birth. The mother and neonate were discharged 30 hours after the procedure. On the third day after delivery, the mother noted HSV lesions around her mouth area, and she also noted 4 lesions on her baby's lower lip on the fifth day after delivery.The mother took valaciclovir for her HSV lesions. The baby was brought to the hospital where he was found to have 4 vesicular ulcers on the left inner lip. The baby's oral lesions improved after 1 dose of acyclovir and were resolved after 1 week.Author comment: "This report describes a case of a 5-dayold neonate who possibly acquired a localized oral HSV from the mother who had oral HSV reactivation in association with neuraxial morphine." De Guzman MC, et al. Possible neonatal herpes simplex virus (HSV) acquired postpartum from maternal oral HSV reactivation after neuraxial morphine. A and A Case Reports 2: 103-105, No. 9, 01 May 2014. Available from: URL: http://