COVID-19 is mainly a respiratory disease, and respiratory tract samples is fundamental for diagnosis of infection. With the rising prevalence, of COVID-19, large scale screening becomes popular. False positive and negative both would pose a significant impact to the patient's psychological health. How do the sensitivity and specificity of nasopharyngeal aspirate compared to saliva sample for testing of COVID-19?
Do you have any evidence to support?
Other than just the persistence of viral copies by PCR?
Consistent Detection of 2019 Novel Coronavirus in Saliva
Clinical Infectious Diseases, ciaa149
In my country the cost of the test is expensive and therefore not available, then it is not being applied to all suspected cases and that does not detect the actual number of cases.