Coverage Comparison
SG12 (local)94.7%
England Average88.9%
WHO Herd Immunity Target95%
Below herd immunity target. Coverage is 94.7% vs 88.9% national average. 0.3 percentage points below the WHO target. To reach 95%, approximately 1 more children in this district would need to be vaccinated.
Key Figures
94.7%
Local Coverage
4
Unvaccinated Children
75
Total Eligible
2
GP Practices
Outbreak Risk Estimate
Rt 0.8
Effective reproduction number
Moderate RiskRt ≤ 1 — outbreak cannot spread
Measles has a basic reproduction number (R0) of ~15 — one of the most infectious diseases known. At 94.7% coverage, each measles case in SG12 could infect approximately 0.8 others. An Rt above 1 means an outbreak can sustain itself.
GP Practices in SG12
| Practice | Postcode | Children | Coverage |
|---|---|---|---|
| NEW RIVER HEALTH | SG12 9EF | 34 | 88.2% |
| DOLPHIN HOUSE SURGERY | SG12 9HJ | 41 | 100% |
MMR Vaccine Facts
The MMR vaccine is safe
The MMR vaccine has been used for over 50 years with an excellent safety record. The 1998 Wakefield study claiming a link to autism was fraudulent and has been fully retracted.
Measles is dangerous
1 in 5 unvaccinated children who contract measles require hospitalisation. Complications include pneumonia, brain inflammation (encephalitis), and death.
Herd immunity protects everyone
95% coverage is needed to protect those who cannot be vaccinated — including newborns and immunocompromised individuals.
Need to Get Vaccinated?
Contact your GP practice to book an MMR vaccination appointment for your child.
Find Your GP →Area Details
DistrictSG12
RegionEast & South East
ICBHertfordshire And West Essex
Data QuarterQ3 2024–25
GP Practices2
Eligible Children75
Vaccinated71
Unvaccinated4
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