According to a study published in the journal Clinical Infectious Diseases, testing saliva samples are effective in detecting asymptomatic Covid-19 cases .
For the study, the researchers tested and compared the nasopharyngeal swabs and saliva samples of around 2,000 people in Japan who did not demonstrate Covid-19 symptoms.
Takanori Teshima from Hokkaido University in Japan said in the study: “Rapid detection of asymptomatic infected individuals will be critical for preventing Covid-19 outbreaks within communities and hospitals.”
Researchers carried out two virus amplification tests on the collected samples for study: the widely available PCR (polymerase chain reaction) test, and the less commonly used RT-LAMP test.
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Both the tests yielded almost the same number of positive and negative outcomes, with the nasopharyngeal swabs and saliva samples able to detect those with the infection in 77-93 per