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'77% of flu infections' had no symptoms, say experts

Over three quarters of flu infections contracted last year did not have any symptoms, researchers found.

Most of the infections (77%) didn't have any symptoms despite one in five people contracting either seasonal flu and the 2009 H1N1 influenza pandemic.

  • Researchers found that on average, 18% of people who had not received a flu jab were infected with flu each season.
  • And only 17% of those infected felt ill enough to visit their GP.
  • Over the winter flu season, 4.7% of people were believed to have flu compared to 6% the previous year.
  • Some 5% of children were reported to have flu, compared to almost 8% the previous year.


Treat flu findings 'cautiously', warns expert

More research will need to be done into the effects of vigorous exercise in warding off the flu, but fresh data shows it can help reduce the chance of catching it, experts have said.

Dr Alma Adler, research fellow at the London School of Hygiene and Tropical Medicine, explained:

We're really interested in the preliminary findings around fitness activity and flu-like illness, as exercise is something that everyone can do to reduce your chance of having flu.

We need to treat this result cautiously as these are preliminary findings, however they are consistent with findings for other conditions and really show the health benefits of exercise.

Although many people have dodged the flu bullet this winter, flu can occur at any time, so taking advantage of the better weather is a great opportunity to get out and get fit to ward off flu this spring.

– Dr Alma Adler

'2.5 hours a week' of exercise reduces chance of the flu

Two-and-a-half hours of vigorous exercise every week cut the chance of catching the flu by approximately 10%, research suggests.

The number of flu patients has dropped, largely thanks to a lack of illness among young people. Credit: PA

Physical activity which leads to sweating or hard breathing reduces flu or flu-like illness, experts at the London School of Hygiene and Tropical Medicine found.

Walking, light jogging and other gentle sports which did not raise heart rate, were found to have little effect.

The Flusurvey also found overall flu levels across the UK appear to be down on last year, with the influenza season apparently curbed by a lack of illness among children and young people.

Flu vaccination delayed over Muslim pork concerns

Part of a pilot programme to vaccinate schoolchildren in Scotland against flu has been delayed over concerns from the Muslim community that it contains traces of pork, the BBC reports.

Pupils in Scotland can opt for an injected vaccine which contains no gelatine Credit: Bodo Marks/DPA/Press Association Images

Pupils at 100,000 primary schools are being offered the Fluenz vaccine as a nasal spray, but parents have raised concerns that the spray contains gelatine which is derived from pork.

NHS Greater Glasgow and Clyde, whose area contains most of Scotland's Muslims, said it had put back the rollout of the vaccinations "following concerns raised by a small number of parents".

Scottish health minister Michael Matheson said an investigation including Muslim scholars had concluded that the sprays could be used, but added that anyone with concerns could opt for a standard jab.

Flu jabs for health staff are also 'for safety of patients'

The Government's plans to encourage NHS trusts to ensure three quarters of their workers are vaccinated from the flu "is a very welcome initiative", a lung and heart expert has told Daybreak.

Professor Peter Openshaw, director of the Centre for Respiratory Infection, welcomed plans to encourage NHS trusts to make sure their workers are properly immunised by allowing them access to some of the £250 million funding.

NHS trusts that fail to prove at least 75% of their workers have had the jab will be blackballed from emergency funding.

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