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The numbers that should be read more carefully are those for hospitalizations and intensive care. Indeed, the absolute number of positives can be misleading: just remember that between March and April we made between 25 and 30,000 buffers a day, today there are more than 150,000 without considering rapid antigenic buffers. In March and April only symptomatic swabs were taken; today, three-quarters of positive swabs have no symptoms.
Does the data also include second buffers? And who counts the rapids?
The data provided daily by civil protection and the Ministry of Health take into account all the molecular swabs carried out, including, therefore, those for confirmation but excluding antigenic swabs, for which we do not have precise data, also considering that their use is not uniform. in the different regions. Italian.
When to do one and the other?
There is a circular from the Ministry of Health that governs the matter, and the guidelines created by the Istituto Superiore di Sanit will be available soon. In short: molecular swabs should be carried out, upon prescription from the family doctor or pediatrician, if symptoms attributable to COVID-19 are felt, or for the isolation of positives after at least ten days from the diagnosis of which at least three without symptoms; antigenic swab, on the other hand, is sufficient to return to the community after at least ten days of quarantine since they are close contacts in a positive case, and for other specific cases such as the return to Italy from countries with a high incidence of infections.
When is rubbing not helpful?
If you are in close contact with a proven positive case, it is useless to take a swab but you must go into quarantine, if you remain in quarantine for two weeks without symptoms, the final swab should not be done, just as it should not be done if you had a positive diagnosis for more than 21 days, with multiple positive swabs in the following weeks, but no symptoms for at least 7 days – in this case, it is considered cured.
If we want to feel safe, can we do a swab?
No, you should not use cotton swabs to feel safe or because you fear that you have had dangerous contact. Tampons are a valuable and not limitless resource, reagents are in short supply throughout Europe, making tampons randomly can harm those who really need them. In this we desperately need the help of family doctors and pediatricians, who must visit their patients, avoiding prescribing the tampon just because the patient asks for it or because a child “snot from the nose”
Technology advances to find new solutions. What’s new, besides the development of salivary tests that are not yet ready?
An aid to identifying positive cases could come from the sense of smell of dogs that are already trained to smell explosives or certain diseases, such as colon cancer and diabetes. In France, a study was published in June on 18 dogs that underwent 198 underarm sweat samples. They have been shown to be able to detect the sweat of a person infected with Sars-CoV-2. Other dog evaluation studies are underway in Great Britain and at Helsinki Airport, Finland.
Has it been shown that dogs can smell the virus?
Yes, they were able to detect the virus with almost 100% certainty. Passengers disembarking in Helsinky were asked to dry their skin with a towel after claiming their luggage. When the dog reported something abnormal, the passenger was asked to submit to a standard molecular swab whose response matched that given by the animals. (h
He answered questions from Corriere Giuseppe Ippolito, Spallanzani’s scientific director. Some of the information was taken from the coronavirus update bulletin published by the same institute.
October 24, 2020 (change October 24, 2020 | 07:16)
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