It seems that I can't find specific guidelines for pharmaceutical vaccine CMC strategy from the EMA and FDA in your requested context. However, I can assist you by providing information based on general industry standards and best practices.

1. Finalizing Formulation and Specifications:

   • Guidance from the EMA and FDA for finalizing the formulation and specifications for MAA submission can be found in the specific regulatory guidelines for pharmaceutical development and submission requirements issued by these agencies.

2. Completing Manufacturing Optimization:

   • Relevant guidelines from EMA and FDA for ongoing efforts to optimize the manufacturing process can be referenced from documentation such as "ICH Q8(R2) Pharmaceutical Development" from the FDA and "EMA Guideline on Process Validation for Finished Products" for specific validation studies.

3. Supply Chain Readiness:

   • Information on supply chain robustness and reliability can be obtained from the EMA's "Guideline on good distribution practice of medicinal products for human use" and the FDA's "Guidance for Industry: Supply-Chain Program Requirements and Co-Manufacturer Supplier Approval and Verification."

4. Finalizing Analytical Methods:

   • Guidelines on updates or improvements for analytical methods before MAA submission can be found in the EMA's "ICH Q2 (R1) guideline on validation of analytical procedures" and the FDA's "Analytical Procedures and Methods Validation for Drugs and Biologics."

5. Conducting Final Stability Studies:

   • The EMA's "Guideline on stability testing: stability testing of existing active substances and related finished products" and the FDA's "Stability Testing of Drug Substances and Products" provide relevant information for additional stability studies and monitoring as manufacturing scales up.

6. Documentation for Regulatory Submission:

   • Both EMA and FDA provide specific guidelines for CMC documentation and submission requirements, which can be found in their respective guidelines for pharmaceutical development and MAA submission.

7. Post-Approval Changes Strategy:

   • Information about handling post-approval changes can be referenced from the EMA's "Variations guidelines" and the FDA's "Guidance for Industry: Changes to an Approved NDA or ANDA."

8. Continued Compliance Monitoring:

   • Guidelines for continued compliance monitoring and mechanisms to provide updated compliance information can be found in the EMA's "Post-Authorization Procedural Advice for Users of the Centralized Procedure" and the FDA's "Compliance Program Guidance Manual."

These are general references and for detailed and specific guidance, it's crucial to refer to the EMA and FDA's official documents and guidelines for pharmaceutical development and regulatory submission.

Sources

CMC Strategies and Advanced Technologies for Vaccine Development to Boost Acceleration and Pandemic Preparedness - PMC - NCBIChemistry Manufacturing and Controls (CMC) Guidances for Industry (GFIs) and Questions and Answers (Q&As) | FDAMultidisciplinary: vaccines | European Medicines Agency[PDF] Chemistry, Manufacturing, and Control (CMC) information for Human Gene Therapy Investigational New Drug Applications (INDs); Guidance for Industry - FDA[PDF] Guidance- Content & Format CMC for Vaccine & Related Product - FDA[PDF] Meeting Report: Workshop with stakeholders on support to quality development in early access approaches (i.e. PRIME, Breakthroug - European Medicines Agency

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