The severity of a cold depends on who lives in our nose

What bacteria live in the nose of a person depends on how hard he’s leaking colds viral diseases. The results of this study opublikowaniu Nature Scientific Reports.

According to the observations of the researchers, if among the microflora in the nose is dominated by staphylococci, the common cold is more severe, and if they are smaller, lighter. We are talking about acute respiratory viral infections (ARVI), which are caused by the same stamatius.

The researchers found that the bacterial composition of the microbiomes of study participants can be divided into six types. Various forms were related to differences in the severity of cold symptoms. It was found that the composition of bacteria also correlate with the viral load – the amount of cold virus in the body.

The discovery surprised even the researchers themselves. The first surprise was the fact that it is possible to identify different bouquets of bacteria, and then it is seen that these flowers affect how a person responds to the virus – gowricharn B. Turner (Ronald B. Turner) from the Medical school of the University of Virginia (University of Virginia School of Medicine).

Nasal micro-organisms themselves do not cause SARS, it is caused by a virus. The researchers can’t yet say exactly whether the microorganisms in the nose are responsible for differences in the severity of cold symptoms. It is very likely, but for the exact answer you need to do more research on this issue.

We are talking only about communication, it is therefore possible that such facts, the presence of staphylococci in the nose and severity of cold symptoms, are not directly related. Can be based on any other factor simultaneously, as the number of staphylococci in the nose and the tendency to colds, says Turner.

For example, according to Turner, in both cases, responsibility can be our genes or factors of the environment. Scientists have studied the microbiomes of the nose 152 of the study participants before and after infection with a cold virus, eliminating the possibility that the virus or the disease significantly changed the composition of the microbiome.

Turner and his colleagues also tried to see if probiotics – beneficial bacteria – to ease the symptoms of a cold or influence the composition of the nasal microbiomes. As it turned out, I can’t. Study participants were allowed to drink probiotics, but it did not affect the microbiomes of the nose and have not had a significant impact on the microbiomes of the stomach.

It is possible that the introduction of the probiotic directly in the nose, for example, by spray, may enhance its effect. But Turner, who have decades of experience studying the cold, quite skeptical about the fact that probiotics are able to exert significant influence.

Dmitry Kolesnik