WHO PQS First line of defense for the immunization supply chain - TechNet Conference 2023

The WHO Performance, Quality and Safety (PQS) Unit based in the WHO HQ in Geneva prequalifies products and devices so that member states and UN purchasing agencies are assured of their suitability for use in immunization programs. The PQS process also encourages a wide range of manufacturers to apply for prequalification so that a competitive marketplace develops.

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