http://www.immunization-schedule.com/diphtheria/ 2009-10-29T03:26:13+00:00 always 1.0 http://www.immunization-schedule.com/diphtheria/diphtheria-vaccine-t61.html 2009-10-29T03:26:13+00:00 yearly 0.5 http://www.immunization-schedule.com/diphtheria/what-is-the-immunization-schedule-for-diphtheria-t29.html 2009-10-17T05:53:19+00:00 yearly 0.5 http://www.immunization-schedule.com/diphtheria/how-do-the-diphtheria-bacteria-spread-t28.html 2009-10-17T05:52:34+00:00 yearly 0.5 http://www.immunization-schedule.com/diphtheria/what-are-the-symptoms-of-diphtheria-t27.html 2009-10-17T05:51:44+00:00 yearly 0.5 http://www.immunization-schedule.com/diphtheria/what-is-diphtheria-t26.html 2009-10-17T05:49:45+00:00 yearly 0.5