Friday, 14 July 2023

London's In a Difficult Spot?

Measles is a human disease caused by one of our most infective viruses. It's transmitted, as folk breathe in a patient's air. For many years (prior to a now notorious bogus claim of there being a link between vaccination and autism), measles was kept in check by the Measles, Mumps and Rubella (MMR) vaccine. Preventing an outbreak, however, requires a population to achieve 'herd immunity'. This is a situation where most people cannot host or transmit the measles virus. 'Herd immunity' is said to require a 95% MMR uptake. Worryingly, the uptake of this vaccine in parts of London is now less than 70%. The UK Health and Security Agency (UKHSA) think London is currently at risk of a major measles outbreak (https://www.theguardian.com/society/2023/jul/14/measles-outbreak-risk-london-uk-health-security-agency-mmr-vaccine-take-up). At current levels of protection, UKHSA predict a London measles outbreak with between 40,000 and 120,000 cases. Measles is far from being a benign infection. A outbreak, on this scale, would lead to dozens of deaths (about 1 in 500 die), as well as thousands of hospitalisations. London certainly doesn't need this. It would be in addition to the Covid19 pandemic (still with us, albeit less newsworthy), along with extreme pressures on the National Health Service. Folk, failing to get their children vaccinated, are actually risking other people's lives.

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