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The genetic material of the coronavirus can remain in the air, even in open environments. This is suggested by a study published Monday 27 in the scientific journal Nature by Chinese scientists. It is not yet possible to know if the detected virus particles are capable of causing infections.
Chinese researchers looked at 30 sites in Renmin (designated for patients with severe symptoms of covid-19) and Fangcang (field hospital for patients with milder symptoms). These locations can be divided into:
- Patient areas, where people with coronaviruses had access, such as ICU, cardiac intensive care unit, and nursing wards within Renmin Hospital, a restroom, and workstations within Fangcang Hospital.
- Exclusive areas for medical personnel who have been in contact with patients with coronavirus.
- Public roads.
In public places, the level of coronavirus was practically undetectable, except in crowded areas. During the sample collection, carried out between February 17 and March 2, the scientists found a strong presence of coronaviruses up to 1 meter away from a department store and also on the street near Renmin Hospital.
Within hospitals, in places with a higher frequency of disinfection, such as isolation rooms and ventilated patient rooms, a low concentration of coronavirus RNA was detected. But higher levels were found in the unventilated toilets used by the patients.
The study reinforces the importance of hygiene, as some areas of access to medical equipment also showed high concentrations of viral RNA, which decreased to undetectable levels after the implementation of strict hygiene procedures.
At the Fangcang field hospital, scientists also noted that the virus can be suspended again when doctors remove protective clothing, as the virus deposited on clothing gains speed during the act.
The research has limitations due to the small sample taken by scientists. The results found, however, provide guidance for future research on the spread of the disease through the air.
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