About 7,100 people benefited from saliva tests during the second phase of the massive Covid-19 screening campaign at the end of February in Saint-Etienne, the organizing authorities announced on Wednesday March 3.
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During the first phase of this campaign, from January 13 to 19, nearly 7,000 people were received, with a positivity rate of 2%, specify in a joint press release the prefecture, the ARS of Auvergne-Rhône-Alpes, the CHU of Saint-Etienne, the Loire health insurance and the city of Saint-Etienne.
The second phase, from February 22 to 28, enabled “
” to benefit from the saliva test “
including 170 positive results, ie a positivity rate of 2.4%
These tests gave rise to "
a unique '' AutoCov '' research protocol, of which the Saint-Etienne University Hospital was the promoter
", underline the organizers.
"A first" in France
The operation, presented as "
" carried out in France on a large scale, was based on a salivary antigen self-test from the BioSpeeda laboratory, supplemented by a second sample at the entrance to the nasal orifice.
This experiment, exclusively based on saliva self-samples, aimed to assess the feasibility of this methodology and compare the performance of the antigen test compared to the RT-PCR test
", according to the ARS.
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All are then sent to a laboratory of the hospital center for confirmation of the result by a PCR control under less than 48 hours
", had detailed to AFP Nadège Grataloup, director of the Regional Health Agency (ARS) for the Loire during from the start of the operation.
Asked by AFP on the comparison of the results between the two types of tests carried out, the CHU of Saint-Etienne considered that "
the data needed to be consolidated
Among the first lessons from the screenings carried out in January and February, "
the highest positivity rates were observed in people under 40 years old,
" said the ARS.
The health authority recalled that "
globally, the salivary antigenic tests detected patients with the highest viral loads (called '' super-contaminators '') but did not '' see '' subjects with loads weak virals
Of the first 130 positive samples analyzed, 68% of variants were identified (the vast majority of which is known as the English variant),
” she added.