“…In addition, complacency, concerns about safety, and philosophical and religious objections to vaccination have resulted in a resurgence of measles in many industrialized nations (43, 102,130,145,151). Delivery by inhalation rather than needle and syringe has been proposed to help improve coverage (56,84,120), and both aerosol and dry powder versions of the EZ vaccine are in development for use both for use in primary immunization of infants and for delivery of the second dose to older children (18,34,52,56,76,78,84,150).…”