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CTRI Number  CTRI/2025/07/091180 [Registered on: 18/07/2025] Trial Registered Prospectively
Last Modified On: 08/07/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Vaccine 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   India f-IPV Study 2025: Comparing Immune Response to Different Dose Schedules of Inactivated Polio Vaccine in Routine Immunization.  
Scientific Title of Study   Comparative evaluation of immunogenicity of variable dose schedules of Inactivated Poliovirus Vaccine in routine immunization: A multi-centric open label randomized controlled trial (India f-IPV study-2025) 
Trial Acronym  NA 
Secondary IDs if Any  
Secondary ID  Identifier 
PBL/21/01/FIPV, Version 06; dated 07/Apr/2025  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Shailesh D Pawar 
Designation  Scientist-F & Officer-In-Charge 
Affiliation  Indian Council of Medical Research (ICMR)-National Institute of Virology, Mumbai Unit 
Address  Indian Council of Medical Research (ICMR)-National Institute of Virology, Mumbai Unit

Mumbai
MAHARASHTRA
400012
India 
Phone  9421018275  
Fax    
Email  shaileshpawarniv@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Mohammad Ahmad  
Designation  National Professional Officer  
Affiliation  WHO Country Office, India, New Delhi 
Address  WHO Country Office, India, New Delhi

South
DELHI
110002
India 
Phone  8800495773  
Fax    
Email  ahmadmoh@who.int  
 
Details of Contact Person
Public Query
 
Name  Dr Mohammad Ahmad  
Designation  National Professional Officer  
Affiliation  WHO Country Office, India, New Delhi 
Address  WHO Country Office, India, New Delhi

South
DELHI
110002
India 
Phone  8800495773  
Fax    
Email  ahmadmoh@who.int  
 
Source of Monetary or Material Support  
World Health Organization, 537, A Wing, Nirman Bhawan, Maulana Azad Road, New Delhi 110 011, India.  
 
Primary Sponsor  
Name  World Health Organization 
Address  WHO Country Office, 537, A Wing, Nirman Bhawan, Maulana Azad Road, New Delhi 110 011, India. 
Type of Sponsor  Other [World Health Organization] 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 5  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Chandra Mohan Kumar  All India Institute of Medical Sciences, Patna   Department of Paediatrics Medicine, Second Floor OPD Building, All India Institute of Medical Sciences, Aurangabad Road Phulwari Sharif Patna Bihar 801507 India
Patna
BIHAR 
9810730206

cmkumar@aiimspatna.org 
Dr S Muhammad Salim Khan  Government Medical College, Srinagar  Department of Community Medicine Room no 204 Main Building Government Medical College, Srinagar Karan Nagar Srinagar 190010 Jammu & Kashmir
Srinagar
JAMMU & KASHMIR 
7006522286

smsalimkhan03@gmail.com 
Dr Farzana Islam  Hamdard Institute of Medical Sciences and Research, New Delhi   Department of Community Medicine Room No B06, Hamdard Institute of Medical Sciences Research, New Delhi, 110062
New Delhi
DELHI 
9560067059

drfarzanaislam@gmail.com  
Dr Manish Jain   Mahatma Gandhi Institute of Medical Sciences, Wardha   Department of Pediatrics, OPD No 18 Mahatma Gandhi Institute of Medical Sciences Sewagram Wardha 442102
Wardha
MAHARASHTRA 
9822695195

manish@mgims.ac.in 
Dr Padmasani Venkat Ramanan  Sri Ramchandra Hospital, Chennai   Department of Pediatrics Sri Ramchandra Hospital, Porur, Chennai 600116 Tamil Nadu India
Chennai
TAMIL NADU 
9445140200

padmasani2001@yahoo.com  
 
Details of Ethics Committee  
No of Ethics Committees= 5  
Name of Committee  Approval Status 
IEC-AIIMS-P All India Institute of Medical Sciences, Patna Phulwari Sharif Patna Bihar - 801507 India  Approved 
Institutional EC Govt. Medical College Government Medical College Institutional EC Govt. Medical College J and K Srinagar Srinagar Jammu And Kashmir - 190010 India  Submittted/Under Review 
Institutional Ethics Committee HIMSR And Associated HAH Centenary Hospital Guru Ravidas Marg Hamdard Nagar South West Delhi South West Delhi Delhi -110062 India  Approved 
Institutional Ethics Committee Mahatma Gandhi Institute of Medical sciences Department of Biochemistry, Sevagram Wardha Maharashtra, India  Approved 
INSTITUTIONAL ETHICS COMMITTEE SRIHER SRIHER No.1 Ramachandra Nagar Porur Chennai Tamil Nadu - 600116 India  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  All infants of 9 to 12 months of age. 
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Inactivated poliovirus vaccine  Enrolled infants will be randomized (1:1) into one of the two study arms (A & B). Arm A: 250 subjects will receive Fractional dose intradermal IPV (dose 3) will be given 0.1 ml in the left upper arm (9-12 months of age) at Baseline Visit. ARM B: 250 subjects will receive Full dose intramuscular (IM) IPV will be given 0.5 ml in the anterolateral aspect of left mid-thigh (9-12 months of age) at Baseline Visit. 
Comparator Agent  Nil  Nil 
 
Inclusion Criteria  
Age From  9.00 Month(s)
Age To  12.00 Month(s)
Gender  Both 
Details  1.All infants visiting study site immunization clinic for first MR vaccine at 9 to 12 months of age.
2. Infants with documentary evidence having taken 4 bOPV doses and two f-IPV doses per the routine schedule.
3. Judged to be healthy by the investigator for study participation.
4. Parents judged to be able to attend all scheduled study visits and comply with the study procedures.
5. Parent or Legally Acceptable Representative (LAR) provides written informed consent for the baby’s inclusion in the study. 
 
ExclusionCriteria 
Details  1. Not fulfilling any of the inclusion criteria
2. Taken any polio vaccine/s other than the national EPI schedule or Polio Immunization Campaigns.
3. Any diagnosed/suspected medical condition which requires active management or hospitalization as judged by the investigator.
4. A diagnosis or suspicion of immunodeficiency disorder (either in the participant or in a member of the immediate family).
5. Thrombocytopenia or a bleeding disorder. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
1. Compare the gains in seroconversion and antibody titres against poliovirus serotype 2 after third fractional or full IPV dose given at 9-12 months age at MR vaccination visit in the routine immunization schedule.  The primary endpoint is the seroconversion against serotype 2 poliovirus, 1 month (30 days) after IPV vaccination in the study. 
 
Secondary Outcome  
Outcome  TimePoints 
1. Assess persistence of serotype 2 antibodies at enrollment after two primary fIPV doses.
2. Assessment of priming response following two primary fIPV doses.
3. To evaluate adverse events following vaccination. 
1. Persistence of serotype 2 antibodies after two primary doses of fIPV from the baseline sample taken at enrollment.
2. Priming effect of the additional f-IPV dose 7 days (1 week) after IPV vaccination, given at 9-12 months of age.
3. The secondary endpoint is the seroconversion against polioviruses serotypes 1 & 3, 1 month (30 days) after IPV vaccination in the study.
4. Number of adverse events (AEs) causally associated to the study vaccine. 
 
Target Sample Size   Total Sample Size="500"
Sample Size from India="500" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 4 
Date of First Enrollment (India)   01/08/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="0"
Months="5"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   This is a two arm, multicentric, open label, randomized clinical trial. A total of 3 scheduled physical visits are planned for the study. Visit 1 (Day 0) Screening Visit / baseline blood sample collection /Vaccination. Telephonic Call (Day 3) Study personnel will contact parents/LAR on third day of the vaccine injection to see any local reactions and ask the parents about any ill health. Visit 2 (Day 7) (+4 days window period), Follow-up Visit for blood sample collection. Visit 3 (Day 30 End of study visit) (+7 days window period), Follow-up Visit for blood sample collection. Infants in Arm A will only be given a dose of fractional IPV (0.1 ml, intradermal) while infants in Arm B will be vaccinated with full dose of IPV (0.5 ml, Intramuscular). Both arms will receive the scheduled first MR vaccine along with any other vaccine recommended in the Expanded Programme of Immunization of that state. Baseline 1 ml blood samples will be collected at the first visit. The participants will be followed up next week for another 1 ml blood sample collection (priming effect of IPV). Finally, a second follow up visit will be done one month after the first study visit when another 1 ml blood sample (for seroconversions from additional IPVs given at enrolment) will be collected. No additional follow-up is planned. 
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