Coverage Comparison
CM20 (local)81.4%
England Average88.9%
WHO Herd Immunity Target95%
Measles outbreak risk. Coverage is 81.4% vs 88.9% national average. 13.6 percentage points below the WHO target. To reach 95%, approximately 17 more children in this district would need to be vaccinated.
Key Figures
81.4%
Local Coverage
22
Unvaccinated Children
118
Total Eligible
3
GP Practices
Outbreak Risk Estimate
Rt 2.8
Effective reproduction number
High RiskRt > 1 — outbreak can spread
Measles has a basic reproduction number (R0) of ~15 — one of the most infectious diseases known. At 81.4% coverage, each measles case in CM20 could infect approximately 2.8 others. An Rt above 1 means an outbreak can sustain itself.
GP Practices in CM20
| Practice | Postcode | Children | Coverage |
|---|---|---|---|
| NUFFIELD HOUSE HEALTH CENTRE | CM20 3AX | 31 | 77.4% |
| ADDISON HOUSE - HAQUE PRACTICE | CM20 1DS | 75 | 81.3% |
| SYDENHAM HOUSE SURGERY | CM20 3NT | 12 | 91.7% |
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
DistrictCM20
RegionEast & South East
ICBHertfordshire And West Essex
Data QuarterQ3 2024–25
GP Practices3
Eligible Children118
Vaccinated96
Unvaccinated22
Share This Area
Help people in CM20 find this data — share with local groups, councillors, or your GP.