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They will be used primarily to arrive at a “differential diagnosis” in suspected cases of influenza or Covid that often have the same symptoms. Saliva tests rejected which, “in the current state of knowledge, are unlikely to lend themselves to rapid detection by many people, as they require an equipped laboratory.”
by Marzio Bartoloni
They will be used primarily to arrive at a “differential diagnosis” in suspected cases of influenza or Covid that often have the same symptoms. Saliva tests rejected which, “in the current state of knowledge, are unlikely to lend themselves to rapid detection by many people, as they require an equipped laboratory”
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Quick swabs enter the classroom to discover Covid infections among students and teachers in 15 minutes. And they will be able to avoid the quarantine of classes and the closure of schools with the ASL that in light of the results – for example only one positive and all negative – they will be able to decide to continue the lessons. Following the green light from the Scientific Technical Committee, the Ministry of Health in a circular authorizes customs to use rapid antigenic tests for the diagnosis of Covid “with special attention to the school context.” With the emergency commissioner Arcuri who also started the fast race yesterday to buy 5 million rapid tests.
Reliable rapid tests, salivary tests not
In five pages, the circular recalls how the traditional nasopharyngeal swab, the one that gives the response in 24-48 hours, remains the most reliable and the only tool that can be used to confirm positive cases, but antigenic tests (called However , even quick swabs since collection is done in the same way) have been shown to be effective over time in detecting infections when the viral load is high and the sample is fresh (“fresh”). A reliability – underlines the circular – not yet reached by salivary tests, which, “in the current state of knowledge, is unlikely to lend itself to the rapid screening of many people since they require an equipped laboratory” (unlike the antigenic).
For now, these tests, more suitable for younger children, will be tested by Lazio in children between 3 and 6 years old. In contrast, rapid swabs already widely tested at airports, despite the risk of “false positive” and “false negative”, have so far been able to intercept “a significant number of infected people, probably with high viral loads, who do not they would have been identified differently. “
With avoidable rapid quarantine tests
That is why they will be used from now on in schools especially to reach a “differential diagnosis” in suspected cases of influenza or Covid that often present the same symptoms, also because “it is totally legitimate to assume that the frequency of episodes fever in the school population in the fall and winter period is particularly high, and it is necessary to resort to tampon practice often. ”Thanks now to rapid tests, in addition to identifying positive cases and tracing all contacts, it will be more easy to make “the decision to apply or not quarantine measures in a short time and with considerable saving of resources, avoiding excessive overload of reference laboratories”. “.
