Polio in England
365,079
Published 2022-06-23
UK, case of wild polio, 1984
UK was declared polio-free in 2003
UK, national incident declared
www.gov.uk/government/news/poliovirus-detected-in-…
Detected, sewage samples in London
Past four months, polio virus, Beckton sewage works, four million in north and east London
Cluster of genetically-linked samples
The virus has evolve
Now classified as a ‘vaccine-derived’ poliovirus type 2 (VDPV2)
Someone recently vaccinated overseas, live virus (Albert Sabin, 1961)
Not used in UK since 2004
assets.publishing.service.gov.uk/government/upload…
Not used in United States since 1987
www.cdc.gov/vaccines/vpd/polio/public/index.html
UK vaccination for polio
Inactivated polio vaccine, IPV, (Jonas Salk, 1955)
Take-up of the first three doses, London, 86%
Rest of UK over 92%
Vaccine-derived polio
Nigeria, poliomyelitis, 2005 and 2006 from several countries,
(that have previously been polio-free)
As opposed to wild form
Can be transmitted, can mutate
No cases have been detected
Health Secretary Sajid Javid
not particularly worried
NHS in London
Contacting unvaccinated under 5s
CDC
www.cdc.gov/vaccines/vpd/polio/public/index.html
Inactivated polio vaccine (IPV)
Only polio vaccine given in the United States since 2000
Oral polio vaccine (OPV) is used in other countries
US Schedule
2 months old
4 months old
6 through 18 months old
4 through 6 years old
Adults at increased risk of exposure to poliovirus
One IPV booster for life
IPV is as effective as OPV for preventing polio
Two doses of IPV provides 90% immunity to all three types of poliovirus
3 doses provides at least 99% immunity