How a jab you had as a child could save you from monkeypox

. . . and it’s not the only vaccine with unexpected health benefits

Forget landing on the Moon or inventing the computer, I think the smallpox vaccination campaign, which eliminated a hideous disease that in the 20th century alone killed more than 300million people, is one of mankind’s greatest achievements.

And it’s a gift that keeps on giving because it could protect you against monkeypox, even if you were vaccinated decades ago.

there have been nearly 200 cases of monkeypox in the UK since the outbreak began four weeks ago.

Although it’s rarely fatal, it can cause a nasty rash that appears first on the palms of your hands and soles of the feet, and then the rest of the body.

How worried should we be about monkeypox? the World Health organisation says ‘at the moment, we are not concerned of a pandemic’, but it is monitoring events.

one worry is that as monkeypox spreads it may mutate into something much more contagious, as Covid did.

one bit of good news, at least if you are over 51 years old, is that you may already be protected against monkeypox by the smallpox vaccine, which, until 1971, was routinely given to young children (the vaccines were stopped when smallpox was no longer considered a risk in the UK).

Smallpox is related to monkeypox and studies suggest that the vaccines for smallpox also offer 85 per cent protection against monkeypox.

What is particularly impressive is that decades later, when people who were inoculated as babies are re-tested, they still show a strong protective antibody response to smallpox (the record so far is someone who was inoculated more than 90 years ago).

this could help explain why the majority of cases of monkeypox have been in people under 50. So a big thanks to my parents for getting me inoculated.

But the smallpox vaccine is not the only one that provides some unexpected benefits.

FLU JABS PROTECT AGAINST DEMENTIA

It MIGHT seem unlikely, but a vaccination against the flu — or pneumonia — not only protects you against these diseases but also reduces your risk of Alzheimer’s.

that was the conclusion of a study from the University of texas Health Science Center in the U.S., based on the health records of more than 9,000 people — those who had an annual flu jab were 13 per cent less likely to develop Alzheimer’s than those who didn’t; with the pneumonia jab, they were up to 40 per cent less likely to develop the condition.

one theory is that the vaccines prevent inflammation which can spread to your brain.

YELLOW FEVER AND BREAST CANCER

YELLOW fever is a rather more exotic vaccine, which you tend to have for travelling to some parts of Africa and South America.

rather surprisingly, the vaccine may also protect women against breast cancer.

In a ten-year study by the University of Padua in Italy, researchers tracked more than 12,000 women who’d been immunised against yellow fever and found that those who’d had the jab between the ages of 40 to 54 had nearly half the chance of developing breast cancer in the two years after vaccination compared to women who were not vaccinated.

Strangely, the jab didn’t offer the same protection to women given it before 40 or after 54.

the yellow fever vaccine contains a live, but weakened, virus (which you also find in the chickenpox and polio vaccines) — it’s thought that the live virus stirs up the immune system, which then also destroys breast cancer cells at a very early stage in the disease, before they become aggressive, which they’re more likely to do in younger women.

SHINGLES AND STROKE RISK

HAVING a vaccine to prevent shingles may also reduce your risk of having a stroke.

Shingles is caused by reactivation of the chickenpox virus which lies dormant in the nerves after the original infection, and can cause a rash with lasting nerve pain. It’s common in people over 50, though you have to be over 70 to be offered a free vaccine on the NHS.

As well as preventing shingles, the vaccine may reduce your risk of stroke by nearly 20 per cent, according to research from the Centers for Disease Control and Prevention in the U.S., based on the medical records of a million people aged 66 or older. like the vaccines against flu and pneumonia, the benefit may be due to reduced inflammation.

TUBERCULOSIS AND BLADDER CANCER

IN THE UK more than 10,300 people are diagnosed with bladder cancer every year.

Surprisingly, one of the frontline treatments, which helps prevent it spreading or coming back, is an injection of BCG, a vaccine made up of weakened bacteria that you’re given as a child to protect you against tuberculosis (TB).

As with the yellow fever vaccine it seems to encourage your immune system to become active and kill off cancer cells that might grow back, or that are left behind.

It is part of an exciting approach to preventing and treating cancer, known as immunotherapy, which holds great promise for the future.

So there you go. At a time when the anti-vax movement is stronger than ever, these are some more reasons to celebrate the remarkable things that vaccines can protect us from — and a reminder of why you really do want to keep up with your jabs.