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Clinical Trials/CTRI/2025/06/089129
CTRI/2025/06/089129
Recruiting
Phase 2/3

A Phase 2/3, Double-Blind, Randomized, Active-Controlled, Multicentric study to evaluate the Safety, Immunogenicity and Lot-to-Lot consistency of a bivalent conjugate vaccine against Salmonella enterica serovars Typhi and Paratyphi A in healthy individuals aged 6 months to 65 years

Serum Institute of India Private Limited (SIIPL)16 sites in 1 country2,729 target enrollmentStarted: July 7, 2025Last updated:

Overview

Phase
Phase 2/3
Status
Recruiting
Sponsor
Serum Institute of India Private Limited (SIIPL)
Enrollment
2,729
Locations
16
Primary Endpoint
1.Immediate adverse events within 30 minutes post-vaccination.

Overview

Brief Summary

A Phase 2/3, Double-Blind, Randomized, Active-Controlled, Multicentric study to evaluate the Safety, Immunogenicity and Lot-to-Lot consistency of a bivalent conjugate vaccine against Salmonella enterica serovars Typhi and Paratyphi A in healthy individuals aged 6 months to 65 years. The Study will be conducted in 2 phases. Phase 2 will be conducted in 18 to 65 years age group, 150 participants. In Phase 3 Healthy male or female participants aged 6 months to 65 years will be divided into four age groups: 6 months to <2 years, 2 to < 10 years, 10 to < 18 years and 18 to 65 years. The study will have two groups SII-TCV (B) and Typbar-TCV given to participants randomized in 2:1 ratio. Either SII-TCV(B) or Typbar-TCV will be administered as single dose of 05.mL via intramuscular route to the participants. The participants will be followed up until 180 days after the vaccination.

Study Design

Study Type
Interventional
Allocation
Randomized
Masking
Participant, Investigator and Outcome Assessor Blinded

Eligibility Criteria

Ages
6.00 Month(s) to 65.00 Year(s) (—)
Sex
All

Inclusion Criteria

  • Male or female participants aged between more than 6 months to less than 65 years
  • Normal health as determined by medical history and clinical examination.
  • Intend to remain residing near study area throughout study participation.
  • Female participants of childbearing potential with negative pregnancy test prior to IP administration.

Exclusion Criteria

  • History of S.
  • Typhi or S.
  • Paratyphi A infection.
  • Previous vaccination for typhoid fever
  • Planning to receive any vaccine until Day 29 post-vaccination.
  • Major congenital or genetic defect
  • Pregnant or lactating women
  • History or presence of significant alcoholism or drug abuse in the past one year.

Outcomes

Primary Outcomes

1.Immediate adverse events within 30 minutes post-vaccination.

Time Frame: 1. 30 minutes post-vaccination | 2. Day 7 post-vaccination

2.Solicited local and systemic adverse events up to Day 7 post-vaccination

Time Frame: 1. 30 minutes post-vaccination | 2. Day 7 post-vaccination

Secondary Outcomes

  • To compare the safety(and tolerability of SII-TCV()

Investigators

Sponsor
Serum Institute of India Private Limited (SIIPL)
Sponsor Class
Pharmaceutical industry-Indian
Responsible Party
Principal Investigator

Study Sites (16)

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