title: Varicella outbreak in a daycare: challenges and opportunities for preventing varicella outbreaks in this setting.
abstract: As a result of single-dose varicella vaccination, daycare outbreaks have become rare. We investigated a daycare outbreak resulting from a misdiagnosed varicella case in an unvaccinated attendee. Of 25 attendees aged 12-32 months without evidence of immunity, 7 (28%) were unvaccinated due to religious/philosophical opposition or recent 1st birthday. Single-dose vaccination reduced disease by 92% compared with no vaccination.
authors.affiliation: From the *Division of Disease Control, Philadelphia Department of Public Health; †Department of Pediatrics, Drexel University College of Medicine; ‡Department of Pediatrics, St Christopher's Hospital for Children, Philadelphia, PA; and §Centers for Disease Control and Prevention, Atlanta, GA.
authors.forename: Irini
authors.initials: I
authors.lastname: Daskalaki
authors.forename: Rodrerica
authors.initials: R
authors.lastname: Thermitus
authors.forename: Dana
authors.initials: D
authors.lastname: Perella
authors.forename: Kendra
authors.initials: K
authors.lastname: Viner
authors.forename: Niya
authors.initials: N
authors.lastname: Spells
authors.forename: Salini
authors.initials: S
authors.lastname: Mohanty
authors.forename: Adriana
authors.initials: A
authors.lastname: Lopez
authors.forename: Caroline
authors.initials: C
authors.lastname: Johnson
mesh_terms: D002644:Chickenpox / Q000453:epidemiology* / Q000517:prevention & control*; D019433:Chickenpox Vaccine / Q000008:administration & dosage*; D002656:Child Day Care Centers; D002675:Child, Preschool; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D015143:Philadelphia / Q000453:epidemiology
chemical_list: D019433:Chickenpox Vaccine