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Thursday, April 25, 2024

How the new salivary swab that detects COVID in advance

It was developed in California thanks to a grant from the Bill & Melinda Gates Foundation and is more accurate than the nasal swab

News on the front of the fight against Covid. A new swab is able to detect the presence of SARS-CoV-2 from one and a half days to 4.5 days before it reaches the detection level of the nasal sampling. It is a salivary test developed by a team of researchers from the California Institute of Technology (Caltech), coordinated by Professor Rustem F. Ismagilov, in collaboration with colleagues from the Department of Public Health of the city of Pasadena, California. The project was funded by the Bill & Melinda Gates Foundation .

The new pad, it must be said, is under development. The advantage of the salivary test, which is presented as faster and more accurate than nasal swabs, is that it can also be performed alone. The researchers proved the effectiveness of the new salivary test by involving volunteers with recent close contacts with people who tested positive for the coronavirus in the trials. Saliva samples were collected in a do-it-yourself fashion by sampling participants twice a day. ( Also Read: What helps against a bloated stomach?)

In each individual case, viral RNA was detected earlier than nasal swab, between 1.5 and 4.5 days earlier . The positivity detected was then confirmed through laboratory analyzes, through which the viral load of each sample was also determined. When brought to use, the new salivary swab could, based on the results collected, speed up the procedures for tracing the infection. Rapid diagnosis is considered an important tool to give a new blow to the spread of infections since a good part of infections are asymptomatic or paucisymptomatic. ( Also Read: 5 easy exercises to strengthen your thighs)


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