2011311579 A1 abstract this invention provides flavivirus vaccines that comprise live attenuated flaviviruses and methods of making and using these vaccines the flavivirus vaccines described herein possess higher potency due to in situ production of additional immunogens in a way that mimics viral infection and the vaccines have potential for higher potency reducing costs for production and delivery application_number US 201113136081 A description as used herein the specification u201c a u201d or u201c an u201d may mean one or more as used herein in the claim s when used in conjunction with the word u201c comprising u201d the words u201c a u201d or u201c an u201d may mean one or more than one as used herein u201c another u201d or u201c other u201d may mean at least a second or more of the same or different claim element or components thereof furthermore unless otherwise required by context singular terms shall include pluralities and plural terms shall include the singular as used herein the term u201c or u201d in the claims is used to mean u201c and or u201d unless explicitly indicated to refer to alternatives only or the alternatives are mutually exclusive although the disclosure supports a definition that refers to only alternatives and u201c and or u201d as described herein the term u201c single cycle flavivirus u201d refers to a.