Thermostable Td Vaccine Cold-Chain Simulator

Arrhenius Kinetic Modeling & Last-Mile Remote Stability Verification
WHO Efficacy Threshold: ≥80%

Storage & Climate Stress

Thermal Excursion Spike

Potency Trajectory (Dual Kinetics)
Thermostable Td
Conventional Td
Thermal Profile

Mean Kinetic Temp (MKT)
35.4°C
Cumulative Thermal Dose
378 °C·d
Thermostable Half-life
32.4 mo
Conv. Toxoid Half-life
1.6 mo
Thermostable Td Toxoid COMPLIANT (92.4%)
Final Potency: 92.4% Est. Wastage Risk: 0.0%
Conventional Cold-Chain Td FAILED (12.1%)
Final Potency: 12.1% Failure Point: Month 2.3
Kinetic Basis: Arrhenius toxoid unfolding (Conv. $E_a \approx 86\,\text{kJ/mol}$; Thermostable stabilized lattice $E_a \approx 124\,\text{kJ/mol}$).
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