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Varicella in the neonatal ICU due to the Varicella vaccine Oka strain. 2023

I Frantzis, and M Messina, and J M Taylor, and K Aschheim, and H Hu, and J C Hairston, and C T Lauren, and A Gershon, and N Feldstein, and J Orange, and L Saiman
Department of Pediatrics, Columbia University Irving Medical Center, New York City, New York, USA.

BACKGROUND Varicella vaccination of non-immune post-partum women is recommended to reduce the risk of chickenpox in mothers and their infants. Though rare, transmission of the varicella vaccine strain vOka can occur from recent vaccinees to non-immune contacts who usually develop mild chickenpox. RESULTS Here we describe an infant hospitalized in the neonatal ICU with vaccine-strain varicella due to transmission from their mother who received the varicella vaccine post-partum. We describe the infection prevention and control strategies implemented to prevent further transmission. CONCLUSIONS Vaccine-strain varicella transmission from mother to infant is a rare event and its occurrence in the neonatal ICU setting can be challenging. Anticipatory guidance for mothers vaccinated in the postpartum period and support of parents of an infected infant are recommended.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007363 Intensive Care Units, Neonatal Hospital units providing continuing surveillance and care to acutely ill newborn infants. Neonatal Intensive Care Unit,Neonatal Intensive Care Units,Newborn Intensive Care Unit,Newborn Intensive Care Units,ICU, Neonatal,Neonatal ICU,Newborn ICU,Newborn Intensive Care Units (NICU),ICU, Newborn,ICUs, Neonatal,ICUs, Newborn,Neonatal ICUs,Newborn ICUs
D002644 Chickenpox A highly contagious infectious disease caused by the varicella-zoster virus (HERPESVIRUS 3, HUMAN). It usually affects children, is spread by direct contact or respiratory route via droplet nuclei, and is characterized by the appearance on the skin and mucous membranes of successive crops of typical pruritic vesicular lesions that are easily broken and become scabbed. Chickenpox is relatively benign in children, but may be complicated by pneumonia and encephalitis in adults. (From Dorland, 27th ed) Varicella,Chicken Pox
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014611 Vaccination Administration of vaccines to stimulate the host's immune response. This includes any preparation intended for active immunological prophylaxis. Immunization, Active,Active Immunization,Active Immunizations,Immunizations, Active,Vaccinations
D019433 Chickenpox Vaccine A live, attenuated varicella virus vaccine used for immunization against chickenpox. It is recommended for children between the ages of 12 months and 13 years. Oka Varicella Vaccine,Varicella Vaccine,Varivax,Vaccine, Chickenpox,Vaccine, Oka Varicella,Vaccine, Varicella,Varicella Vaccine, Oka

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