PMID- 15336473 OWN - NLM STAT- MEDLINE DCOM- 20041108 LR - 20190922 IS - 0149-2918 (Print) IS - 0149-2918 (Linking) VI - 26 IP - 7 DP - 2004 Jul TI - A randomized, open-label study of the immunogenicity and reactogenicity of three lots of a combined typhoid fever/hepatitis A vaccine in healthy adults. PG - 1084-91 AB - BACKGROUND: Travelers are often advised to receive both the typhoid fever and hepatitis A virus (HAV) vaccines, particularly when going to areas where the 2 diseases are endemic. Thus, combined administration of these vaccines could make immunization more acceptable by reducing the number of injections needed. OBJECTIVE: This study compared the safety profiles and immunogenicity of 3 batches of a combined typhoid fever/HAV vaccine administered using a dual-chamber bypass syringe. METHODS: This randomized, open-label study was conducted at 2 university-based travel clinics in Germany and Austria. Subjects received a single IM injection from 1 of 3 batches of the combined vaccine. Blood samples were drawn immediately before and 28 days after vaccination to evaluate the response to the 2 antigens by assessing geometric mean titers (GMTs) and rates of seroconversion and seroprotection. Subjects recorded all adverse events (AEs) occurring during the study period in a diary. RESULTS: Six hundred ten healthy adults were enrolled in the study. Twenty-eight days after vaccination, 90.6% of the study population had protective typhoid Vi antibody titers (> or = 1 microg/mL) and 100% had protective HAV antibody titers (> or = 20 mIU/mL). Seroconversion rates and GMTs were not significantly different between the 3 batches. There were no differences with regard to local or systemic AEs between the 3 batches of vaccine. There were no immediate adverse reactions (within 30 minutes of vaccination) and no serious AEs related to vaccination. Of 609 evaluable subjects (1 was lost to follow-up after the first visit), 555 (91.1%) experienced > or = 1 local reaction within the first 7 days after vaccination, mainly pain at the injection site (550 [90.3%]), but only 26 (4.3%) described this pain as severe. Vaccine-related headache and mild to moderate asthenia were each reported by 54 subjects (8.9%). Symptoms resolved spontaneously in all cases. CONCLUSIONS: The 3 batches of the combined typhoid fever/HAV vaccine administered by dual-chamber bypass syringe were equally well tolerated and effective in healthy adults, and did not differ significantly in terms of GMTs or seroconversion rates. FAU - Loebermann, Micha AU - Loebermann M AD - Department of Tropical Medicine and Infectious Diseases, Faculty of Medicine, University of Rostock, D-18057 Rostock, Germany. micha.loebermann@medizin.uni-rostock.de FAU - Kollaritsch, Herwig AU - Kollaritsch H FAU - Ziegler, Tom AU - Ziegler T FAU - Rendi-Wagner, Pamela AU - Rendi-Wagner P FAU - Chambonneau, Laurent AU - Chambonneau L FAU - Dumas, Rafaele AU - Dumas R FAU - Lafrenz, Michael AU - Lafrenz M LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Clin Ther JT - Clinical therapeutics JID - 7706726 RN - 0 (Antibodies, Viral) RN - 0 (Hepatitis A Vaccines) RN - 0 (Typhoid-Paratyphoid Vaccines) RN - 0 (Vaccines, Combined) SB - IM MH - Adult MH - Antibodies, Viral/isolation & purification MH - Austria MH - Drug Administration Schedule MH - Female MH - Germany MH - Hepatitis A/immunology/*prevention & control MH - Hepatitis A Vaccines/*administration & dosage MH - Humans MH - Male MH - Typhoid Fever/immunology/*prevention & control MH - Typhoid-Paratyphoid Vaccines/*administration & dosage MH - Vaccines, Combined/*administration & dosage/adverse effects EDAT- 2004/09/01 05:00 MHDA- 2004/11/09 09:00 CRDT- 2004/09/01 05:00 PHST- 2004/03/31 00:00 [accepted] PHST- 2004/09/01 05:00 [pubmed] PHST- 2004/11/09 09:00 [medline] PHST- 2004/09/01 05:00 [entrez] AID - S0149291804901804 [pii] AID - 10.1016/s0149-2918(04)90180-4 [doi] PST - ppublish SO - Clin Ther. 2004 Jul;26(7):1084-91. doi: 10.1016/s0149-2918(04)90180-4.