Vaccines Development Cycle
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Transcript of Vaccines Development Cycle
Quality: quality control, quality assurance
Pharmacovigilance
The vaccine development cycle
Clinical development �
Between 9 and 14 years Up to 22 months �
RESEARCH & DEVELOPMENTINDUSTRIAL OPERATIONS
Bulk production
of a vaccine’s production time dedicated to quality control.
Registration �
Productlaunch
Exploratorystage
�
Pre-clinicalstage
�Phase I Phase II Phase III Germ
culture Harvesting Purification Inactivation Valenceassembly Formulation Filling Freeze-drying Packaging Batch
release Transport
70%Average development time for a vaccine: 12 years
� Exploratory stage: 2 to 4 yearsIdentifying antigens toprevent or treat a disease.Selected candidate vaccineswill continue the process.
� Pre-clinical stage: 1 to 2 yearsAssessing antigens’ safetyin animals and selecting the best candidate vaccineto continue the process.
� Clinical development: 6 to 8 yearsTesting the candidatevaccine in humans.Phase I: test of safetyon 10 to 100 subjects
Phase II: Evaluation of the immune response in 100 to 3,000 subjects
Phase III: Large-scale testsof the vaccine’s efficacyand tolerance on 3,000 to40,000 subjects.
� Registration: synthesis stage from 12 to 18 monthsAll of the data that havebeen collected during the preceding stages are gathered in a file
and submitted to thehealth authorities in order to obtain a marketing authorization.
� The infectious germs are cultured, harvested and purified. After formulation and freeze-drying (which stabilizes the more fragile vaccines),
the vaccines are filled,primarily in vials andsyringes and then packed.When the manufacturingprocess is complete, the cold chain must be constantly maintained
during all stages, fromdistribution to vaccineadministration to patients.
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