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Clinical Trial Summary

The study will evaluate the humoral immunogenicity in various schedule combinations of full dose inactivated polio vaccines (IPV) via intramuscular administration (IM) and of the fractional dose of inactivated poliovaccine (f-IPV) via intradermal administration (ID).


Clinical Trial Description

The study will be conducted in a setting where only IPV is being used for polio prevention in infant immunization schedules.

The study population will include infants from Uruguay, a pioneer country in immunization programs in Latin America, where tOPV(trivalent oral polio vaccine) was used until 2012, after which the program changed to an all-IPV schedule without transition.

The primary IPV immunization schedule in the country is as stand-alone vaccine at 2, 4 and 6 months of age, with a booster dose at 15 months. This setting allows the evaluation of IPV immunogenicity in a scenario where the circulation of any poliovirus is highly unlikely.

Infants will receive two or three doses of full dose IPV IM or fractional dose f-IPV ID, in various schedule combinations (6 and 14 weeks; 10 and 14 weeks; 14 and 36 weeks; 6, 14 and 36 weeks; 10, 14 and 36 weeks). Immunological and safety assessments will be made after one dose, two doses and three doses.

The study will be conducted in Montevideo, Uruguay and a total of 1493 infants will be randomized into 6 groups. Other vaccines comprise DTPw-HB-Hib (pentavalent combined diphtheria-tetanus-whole cell pertussis-hepatitis B-Hib vaccine), Pneumococcal conjugate vaccine, Rotavirus and will be administered concomitantly.

Optimum immunogenicity expected from the dose/s of IPV in the post-eradication era will have to be balanced with the cost and supply constraints of IPV. This study will be critical to determine how many doses of IPV and which schedule will be recommended for the post-eradication era after the cessation of OPV (oral polio vaccine) usage globally. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03016949
Study type Interventional
Source Fidec Corporation
Contact
Status Withdrawn
Phase Phase 3
Start date July 2017
Completion date November 2018

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