MMR Vaccine Schedule & Cohort Vulnerability Simulator

Epidemiological Sandbox
Clinical Regimen & Parameters
Per-Visit Completion Adherence 92%
Calibrated against pediatric well-child drop-off models
Split Dose Spacing Interval 3 Months
Measles Basic Reproduction (R₀) 15.0
Calculates community elimination threshold: 1 - 1/R₀ (93.3% - 94.4%)
Cohort Epidemiological Impact (1,000 Infants) Combined MMR (2 Visits)
Herd Immunity Sustained (Low Outbreak Hazard)
Cohort completion exceeds the 95% critical threshold for measles transmission interruption.
Rt = 0.81
Full 3-Antigen Protection 84.6% 846 of 1,000 children
Measles Immunity Rate 92.0% Target: ≥ 95.0%
Cumulative Child Vulnerability 180,000 Child-days susceptible
Total Clinical Injections 2,000 2 per completing child
Cohort Micro-State Grid (400 Sample Children)
Fully Immunized
Partial (Missed Doses)
Unprotected / Dropped Out
Susceptible Child-Days by Pathogen Timeline Age 0 to 72 Months
Measles Susceptibility
Mumps Susceptibility
Rubella Susceptibility
Appointment Completion Attrition Curve Compound Decay (P = pⁿ)
Scientific Schedule Comparison & Pathogen Gap Breakdown Nature Evidence Model
Evaluation Metric Combined MMR (Standard) Split Single-Antigen (Modeled) Epidemiological Delta / Hazard
Clinical Appointments Required 2 Visits 6 Visits +4 additional clinic encounters
Full 3-Disease Cohort Protection 84.6% (846/1000) 59.0% (590/1000) -25.6% adherence drop-off
Measles Elimination Threshold (95%) 92.0% (Near Threshold) 92.0% (Dose 1) → 77.8% (Dose 2) Substantial breach of herd immunity
Cumulative Child-Days Susceptible 180,000 child-days 585,000 child-days +405,000 excess exposure days
Mumps / Rubella Protection Gap Protected by Month 12 Delayed to Months 15–18+ Expanded 3–6 month unprotected window
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