Health: Second Opinion
Your support helps us to tell the story
From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.
At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.
The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.
Your support makes all the difference.QUIETLY, polio is slipping away. As recently as the 1950s any large group of children would include a few with limps, often with a leg in irons. Children's stories such as the Pied Piper commonly included a crippled child, and polio was one of the main causes. Now, says the World Health Organisation (WHO), more than two years have passed without a single case of paralytic polio in North or South America or Western Europe. Their target is the eradication of the wild polio viruses by the end of the century. Polio's disappearance may not have much emotional impact on people under 50, but it has practical implications for us all.
I remember summers just after the war when polio outbreaks led to panic measures such as the closing of public swimming pools. Not much was known about this illness, popularly known as 'infantile paralysis'. In common with many other virus infections, before vaccines were developed virtually everyone caught the wild disease at some time in childhood. Most hardly noticed it - just another sore throat. A few, however, became ill with a severe headache and stiffness in the neck, and in some symptoms progressed to weakness of the muscles of the legs and trunk, sometimes the whole body.
The virus attacks the nerve cells in the spinal cord that power the muscles, leaving sensation and consciousness unaffected. In those years around 600,000 children worldwide became paralysed each year. A few were totally paralysed and were kept alive only by treatment in a primitive respirator known as an iron lung. Fortunately, half of the children who developed paralysis made a full recovery; many others had only slight permanent weakness. Nevertheless, thousands were left with a weak leg, the muscles of which wilted away with time; an affected leg would become shortened, and the child - and then the adult - limped for ever.
Parents, well aware of the unpredictability and untreatable nature of polio, did all they could to protect their children: swimming pools were closed partly because this was thought to reduce the risk of transmission, but also because of evidence that children most likely to become paralysed were those who had been physically very active in the days before they became ill.
All these fears were swept away by the introduction of the Salk and Sabin vaccines in 1955 and 1961. The oral Sabin vaccine used in Britain and most of the world is a living virus which mimics natural infection and very rarely - perhaps once in five million doses - causes a paralytic illness. WHO believes that worldwide around 83 per cent of children are immunised against polio; but around 15,000 cases of paralytic polio are still reported each year, and the true figure must be higher.
What are the messages? First, vaccination works: it defeated smallpox and is on the way to defeating measles and polio. These were diseases which, in the words of an African proverb, children had to survive before their mothers could count them. It may be difficult to persuade parents to vaccinate children when they have never seen a friend or relative suffering from polio. Secondly, for the time being at least travel to Africa and Asia will mean exposure to a risk of polio; people not fully vaccinated are at risk. Meanwhile, the WHO's immunisation programme needs our continuing financial support.
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies
Comments