title: Vaccine shortages: why they occur and what needs to be done to strengthen vaccine supply.
authors.affiliation: Department of Pediatrics, Boston Medical Center, Boston University School of Medicine, Massachusetts, USA. jerome.klein@bmc.org
authors.forename: Jerome O
authors.initials: JO
authors.lastname: Klein
authors.forename: Martin G
authors.initials: MG
authors.lastname: Myers
mesh_terms: D002648:Child; D006801:Humans; D014481:United States; D014612:Vaccines / Q000009:adverse effects / Q000191:economics / Q000592:standards / Q000600:supply & distribution*
chemical_list: D014612:Vaccines