In this upsurge that seems to be taking place, the restrictive measures being taken by the health authorities of some countries against the use of tobacco in public places are striking. It is also striking because although in the first outbreak of the coronavirus only the use of tobacco seemed to be mentioned as an aggravating element for those affected by the pandemic, in this latest outbreak the emphasis seems to be on the fact of smoking itself, and the risks that the particles of the virus could take advantage of the smoke to move and end up contaminating healthy people.

For this reason, in Biosalud we want to compile some data that can clarify the evidence of this route of infection, with the aim of trying to put some order into the generalised paranoid atmosphere in which we are immersed.

As a curiosity, and within the flood of scattered studies that exist around the covid-19, it is worth mentioning a study in which it was noted how nicotine (not tobacco) could make it difficult for the virus to enter the body, interacting with the ACE2 protein, which is the door used to spread the coronavirus in humans.

But evidence that tobacco and tobacco smoke serve as a transmission route for the coronavirus appears to be mounting in the international scientific community, prompting authorities to take steps to restrict its public use. This is based on a study published in March by the University of California, specifically by the Center for Research and Education in Tobacco Control (see study: https://tobacco.ucsf.edu/reduce-your-risk-serious-lung-disease-caused-corona-virus-quitting-smoking-and-vaping). According to this study, the lungs are home to a good part of the cells infected by the coronavirus, and it is through the respiratory tract, mixed with smoke, that they could go outside and take advantage of their floating condition to reach other individuals.