Safety and Immunogenicity Study of Live Attenuated Indian Rotavirus Vaccine Candidate Strains 116E and I321 in Infants

Summary

It has been observed that in children who get a severe rotavirus infection, subsequent infections cause either no symptoms or generally only mild or moderate diarrhea. This evidence is the basis for developing a vaccine since it suggests that the first infection immunizes the child against disease upon re-infection. It was found that neonatal avirulent strains 116E and I321 induce protective immunity and offer clinical protection for at least one year. Both these strains are well characterized and the safety studies have been done in animal models. These candidate vaccine strains have been evaluated for safety and immunogenicity in adults and children (2 to 12 years of age) by a randomized double blind placebo controlled trial in Cincinnati, USA. In India, the diversity of rotavirus strains is greater and there is greater prevalence of malnutrition and co-infection with other enteric pathogens. These vaccines have therefore, also been tested in India.

Timeline

Start

2005-01

Primary completion

2005-05

Completion

2005-05

Publications

• Background Bhandari N, Sharma P, Glass RI, Ray P, Greenberg H, Taneja S, Saksena M, Rao CD, Gentsch JR, Parashar U, Maldonado Y, Ward RL, Bhan MK. Safety and immunogenicity of two live attenuated human rotavirus vaccine candidates, 116E and I321, in infants: results of a randomised controlled trial. Vaccine. 2006 Jul 26;24(31-32):5817-23. doi: 10.1016/j.vaccine.2006.05.001. Epub 2006 May 12.

Drugs

Indications