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MMR Schedule vs Split Vaccine Epidemic Risk Simulator

Grounded in Nature Research Report (Aug 2026)
Clinical Schedule Mode
Cohort Presets
Simulation Parameters
Birth Cohort Size 10,000
Per-Visit Attrition / Dropout Rate 18.0%
Real-world pediatric drop-off per separate scheduled appointment
Split Shot Spacing Interval 3 months
Measles Reproduction (R₀) 15.0
Herd immunity threshold = 1 - 1/R₀ (93.3%)
Index Outbreak Seed Cases 5
Immunological Fact: Splitting MMR into 6 individual clinic visits compounds appointment non-completion, leaving toddlers vulnerable to measles during critical brain development months with zero biological benefit.
Measles Coverage (Dose 1)
94.0%
Threshold: 93.3% Required
Rubella Final Coverage
94.0%
After cumulative dropout
Vulnerability Window
36,000
Total Unprotected Person-Months
Measles Epidemic Risk
Contained
~0 Excess Cases
Pediatric Schedule & Cohort Retention Standard 2-Dose Combined
● Measles (M) ● Mumps (Mu) ● Rubella (R) --- Herd Threshold (93.3%)
Epidemic Transmission Wave (SEIR Model) Herd Immunity Maintained
— Active Infectious — Cumulative Cases — Immune/Recovered
Antigenic Immune Burden: Science vs Myth
Combined MMR Total Antigens: ~25 proteins < 0.002% capacity
Infants naturally process 2,000 - 6,000+ environmental antigens daily from breastmilk, dust, and gut microbiota. Combining MMR places zero excess strain on the immune system.
Window of Vulnerability: Under split regimens, delaying Mumps & Rubella inoculations by 3–6 months creates a dangerous window where infants are susceptible to severe viral complications without any immune benefit.
Antigen Protection Audit
Antigen Dose Age Target Retention Effective Coverage Status
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