![]() The sampling has also detected virus in lower concentrations and frequency in areas adjacent to the Beckton catchment area to the South (immediately below the Thames) and to the East. Based on this sampling, virus is considered to be present in sub areas of the Beckton plant covering all or parts of the following London boroughs: Barnet, Brent, Camden, Enfield, Hackney, Haringey, Islington and Waltham Forest. The UK Health Security Agency ( UKHSA) is investigating the extent of transmission of the virus across north-east and north-central London. The UK switched from using OPV to inactivated polio vaccine ( IPV) in 2004, the year after poliovirus was declared eradicated in the WHO European region. Recently vaccinated individuals shed the OPV virus in their stool for a few weeks after and this can be detected through the sewage surveillance. ![]() ![]() It is considered most likely that an individual entered the UK in February 2022 from a country where oral polio vaccine ( OPV) has been used for supplementary immunisation campaigns and outbreak response. VDPVs behave more like wild type virus, can sustain outbreaks and on rare occasions lead to paralytic presentations in unvaccinated individuals. As expected, since February, the virus has evolved and towards the end of May met the criteria of a vaccine-derived poliovirus ( VDPV2) which means that it has re-acquired the mutations that cause paralysis. The Beckton sewage treatment plant covers a large catchment area with a population close to 4 million across north-east and north-central London. This is unusual activity and analysis has shown that all PV2 isolates identified since then are genetically related to each other. Vaccine-like type-2 poliovirus ( PV2) isolates were found in sewage samples collected from the London Beckton sewage treatment works in February 2022 and have persisted since. The National Institute for Biological Standards and Control ( NIBSC) of the Medicines and Healthcare products Regulatory Agency ( MHRA) conduct routine environmental surveillance for wild type and vaccine-like polio viruses as part of the UK’s commitment to the World Health Organization ( WHO) global polio eradication programme. In recent years, Canada has developed a national immunization strategy but each province and territory has individual schedules of when vaccines are administered.Background Summary of incident to date – findings and interpretation It is also recommended that preteens and teens be vaccinated against influenza, hepatitis B (if they have not been as a child) and human papillomavirus (HPV). In addition to the six diseases covered in the new vaccine, it is recommended that children be vaccinated against measles, mumps, rubella (the MMR vaccine is given in three-in-one shots), varicella (chicken pox), meningitis C and pneumococcal disease. For that reason, British Columbia held off.Ĭurrently, the only childhood vaccine used in Canada that contains thimerosal is the flu shot. While scientific research has not shown any danger from exposure to minute amounts of thimerosal, most pediatricians recommended limiting exposure to mercury - a highly toxic substance - as much as possible. That preservative, which is mercury-based, has been highly criticized, particularly by parent groups that believe it can cause brain damage. But the company has just produced a new version that does not contain thimerosal. Infanrix hexa was originally approved for use in Canada in 2004. doctors are paid $4 for each shot administered, so these costs are lesser too. Centre for Disease Control, said that in addition to cutting down on the number of shots babies receive, the new vaccine means using fewer syringes and producing less medical waste. Monika Naus, medical director of immunization programs at the B.C. British Columbia opted for childhood vaccination because of its large immigrant population and because a significant number of children were developing liver disease associated with hepatitis B infection. But the virus can also be contracted by casual contact with an infected person, and infection is commonplace in developing countries. Hepatitis B is principally a sexually transmitted disease, so most provinces vaccinate preteens. has been doing this since 2001 and the incidence of acute hepatitis B has continued to fall." "Recent research has concluded that infant immunization is the preferred method," said Todd Sorokan, past president of the B.C. But the arrival of Infanrix hexa in Canada will likely rekindle the debate over when it is best to vaccinate against hepatitis B.
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