Antibiotics weaken the defense of the virus in the lungs 2

Antibiotics weaken the defense of the virus in the lungs

Flu viruses seem to have a light play when the intestinal flora is disturbed.

Flu viruses seem to be a light game when the intestinal flora is disrupted by taking antibiotics.

© Monkey Business – Fotolia

July 4, 2019

Antibiotics can make lungs susceptible to influenza viruses. This is the result of research on mice carried by scientists from the Francis Crick Institute in London. This may be a disturbed intestinal flora by using antibiotics.


When mice with normal intestinal flora are infected with influenza viruses, about 80 percent have survived. However, if antibiotics were given prior to infection, only one third survived. Responsible for it could be weakened intestinal flora. Because antibiotics kill not only pathogenic bacteria, but also useful bacteria in the intestines. This, in turn, weakens lung defense: Scientists have found that intestinal bacterial signals contribute to maintaining the first line of virus-defensive line in the lung mucosa.

"This is another proof that antibiotics should not be taken and prescribed lightly, and improper use not only promotes resistance to antibiotics and kills useful intestinal bacteria, but may also make us susceptible to viruses," the author of the study commented. Andreas Wacka.

Keeping the intestinal bacteria upright, it prevents the rapid proliferation of viruses in the mucous membrane and gets precious time. It takes about two days for the immune cells to react. During that time, the virus is propagated in the lung mucosa. Two days after the infection, antibiotic-treated mice had five times more viruses in the lungs. The immune system reacts to such a severe infection with a much more serious response, leading to more serious symptoms of the disease.


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