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Why Asthmatics Are Less Able to Fight Off Flu

People with asthma are likely to have worse symptoms when they get the flu and are more likely to end up in hospitals because of immune system differences, researchers said.

IANS

Updated:March 10, 2017, 4:26 PM IST
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Wearable Devices, Asthma, Graphene based sensor, Inflammation, Asthma Monitor
Representative Image. Photo courtesy: Reuters

People with asthma are likely to have worse symptoms when they get the flu and are more likely to end up in hospitals because of immune system differences, researchers said.

The study showed that when exposed to the flu virus, people with asthma have weaker immune systems, whereas healthy people show a strong immune system-triggering reaction.

"We wanted to look into whether immune system differences explain why asthmatics are more likely to end up in hospital if they get flu than the general population. This is important, as flu can cause a person's asthma symptoms to get worse," said Ben Nicholas from the University of Southampton in London.

For the study, published in the Journal of Allergy and Clinical Immunology, the team assessed lung samples from asthmatics and healthy volunteers.

The samples were exposed to influenza and their reactions analysed.

"The samples from healthy people showed a strong immune system-triggering reaction to the flu virus. But in lung samples from asthma patients, this reaction was much weaker," Nicholas said.

"We hope these results help researchers better understand why asthmatics are more affected by influenza and help find new treatments for common lung infections, which often make asthma symptoms worse," he added.

More research is now needed to investigate whether the difference in immune responses is due to the asthma itself, or the daily medications used by participating asthmatics to control their condition, the researchers noted.

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| Edited by: Manila Venugopal
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