A swab test is deployed for the detection of both bacteria and viruses present in the sputum.
However, the reverse transcription‐polymerase chain reaction (RT‐PCR) test is rapid, sensitive, and specific for testing viral infection. The RT-PCR is one of the most widely adopted qualitative tests for detecting nucleic acid present in coronavirus, from upper and lower respiratory specimens collected from individuals.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.