SARS-CoV-2(61) COVID-19(38) positive(19) coronavirus(17) specimen(15) Mutation(13) Whole genome sequencing(12) variant(12) genomic(12) approach(12) reported(12) Genes(10) hospitalisation(10) increase in(10) polymerase chain reaction(9) public health(8) Laboratory(8) acute respiratory syndrome(8) proficiency testing(8) Rapid(7) reverse transcription(7) characteristic(7) addition(7) Strains(7) randomly selected sample(7) Delta COVID-19 variant(7) Delta(7) Spike protein(7) New(7) Chain Reaction(7)