Case study of
#00136 Manufacture heat-stable, freeze-dried antivenom for cold-chain-free rural stocking
Eswatini
#00135
Implementer
Premium Serums & Vaccines (manufacturer); preclinical evaluation by academic snakebite research groups
Location
Description
PANAF-Premium is a freeze-dried polyvalent antivenom requiring no refrigeration, with a manufacturer-stated ambient shelf life of approximately 4 years. A preclinical study evaluated PANAF and a 'Panafrican' ICP product against venoms of five medically important Eswatini species, motivated by Eswatini's near-total dependence on a single refrigerated product (SAIMR Polyvalent). Clinical effectiveness at scale is still being established, and shelf-life claims originate with the manufacturer and remain independently unconfirmed.
Metrics
2Lessons learned
- A heat-stable format removes the cold-chain barrier and can reduce dangerous dependence on a single refrigerated supplier, improving supply resilience.
- A lyophilised product must still be efficacy-matched to local venoms through preclinical cross-neutralisation testing before deployment.
- Manufacturer-sourced performance claims (shelf life, stability) should be treated as unverified until confirmed by independent preclinical and clinical evaluation.
Sources
2Documented Jul 8, 2026
History
· 1Arnaud Gissinger · 1h ago · approved by Arnaud Gissinger 1h ago