Q. Why is this in news?
A. Recently US drug regulator FDA has issued emergency-use authorisation to Yale School of Public Health’s diagnostic kit, called SalivaDirect.
Q. How useful are saliva tests for Covid-19?
A. A saliva test is reported to be prone to less error than has been reported in nasal swab collection, which sometimes give false negatives.
Q. What is a saliva test for Covid-19?
Q. What are the advantages of a saliva test?
Q. Apart from sampling methods, how is the saliva test different from RT-PCR?
Q. What are the limitations of the saliva test?
Q. Where are saliva tests being used?