A young woman disinfects the benches of the Church of Santa Genoveva, in Seville.Raúl Caro / EFE
The use of disinfectants is unnecessary in most everyday situations to combat the coronavirus , although they are sold as donuts. The Centers for Disease Control and Prevention (CDC) have reviewed all the scientific evidence on the spread of covid by surfaces and conclude that cleaning with soap or ordinary detergent is enough. Above all, because the risk of contagion in this way, by touching a contaminated surface is very, very rare. The CDC dares to put a figure: less than one contagion for every 10,000 times a point with coronavirus is touched
Do not breathe someone else's air: how to avoid the coronavirus indoors One year fumigating against the coronavirus and other cases of “ pandemic theater ” It is not the place, it is what happens inside: why bars and restaurants pose a risk of contagion
The CDC has already made it clear for some time that the risk of infection through this route is very unlikely, but now they have performed a specific analysis . "Due to the many factors that affect the efficiency of environmental transmission, the relative risk of transmission by fomites of SARS-CoV-2 is considered low compared to direct contact, transmission by droplets or airborne transmission," they point out in your review. Fomites is what this mode of contagion is called, while direct contact with an infected person is still considered the most dangerous, which when talking, coughing, etc., generates droplets of different sizes that can be inhaled by another person . The CDC emphasizes that masks and hand hygiene are also a good strategy against possible contagion from surfaces.
The European Center for Disease Prevention and Control (ECDC) also points out in its guidelines that this route of contagion is the least probable and it stands out that after millions of patients worldwide, no case of infection by fomites has been registered. The CDC further indicates that, as with the contagion by inhaling the virus in suspension, the exteriors are also less dangerous for the infection by surfaces “due to the dilution and the movement of the air, as well as to the more difficult environmental conditions, such as sunlight. ”
All health agencies and authorities advise against spraying or fogging places and this CDC document once again insists that it is neither useful nor safe. And it only recommends the use of special disinfectants, beyond normal soap, "in situations in which there has been a suspected or confirmed case of COVID-19 indoors within the last 24 hours."
You can write to javier @ esmateria. com follow MATERIA at Facebook , Twitter e Instagram , or sign up here to receive our weekly newsletter .