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Rabies Immunisation clinical trials

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NCT ID: NCT04019444 Completed - Rabies Clinical Trials

Dosage-Escalation Study of the Safety and Immunogenicity of a Novel Rabies Vaccine ChAd155-RG vs. the Comparator RABAVERT Vaccine in Healthy Adult Subjects

Start date: September 19, 2019
Phase: Phase 1
Study type: Interventional

This is a single-center, observer-blinded, dosage-escalation trial to evaluate the safety, tolerability, reactogenicity, and immunogenicity of ChAd155-RG compared with RABAVERT in rabies virus-naïve healthy male and non-pregnant female adult subjects ages 18-49. There are 4 dose groups: Group A will receive ChAd155-RG at the lower dosage (5x1010vp) on Day 1, then placebo injections on Days 8, 15, and 22; Group B will receive ChAd155-RG at the higher dosage (1x1011vp) on Day 1, then placebo injections on Days 8, 15, and 22; Group C will receive ChAd155-RG at the higher dosage (1x1011vp) on Days 1 and 15, and placebo injections on Days 8 and 22; Group D will receive RABAVERT at the standard dose (1 mL) on Days 1, 8, and 22, and a placebo injection on Day 15. Since this is a dosage-escalation study, sentinel subjects will be used at each dosage level before non-sentinel subjects will be enrolled. The study will be conducted at Emory University Vaccine and Treatment Evaluation Unit (VTEU). This trial is expected to take approximately 48 months to complete. The duration of each subject's participation is approximately 13 months, from recruitment through the last study visit. The primary objectives of this study are: 1) Assessment of the safety, tolerability, and reactogenicity of one dose of ChAd155-RG at 5x1010vp per dose, or one or two doses of ChAd155-RG at 1x1011vp per dose; 2) Comparison of the safety, tolerability, and reactogenicity of one or two doses of ChAd155-RG, with three doses of RABAVERT.