SARS-CoV-2(54) COVID-19(54) Patient(30) Result(29) coronavirus(24) Infection(24) pandemic(22) analyzed(19) COVID-19 pandemic(18) coronavirus disease(16) group(16) cough(16) evaluated(16) positive(15) Pneumonia(15) Laboratory(15) death(15) Analysis(14) evaluate(14) reported(14) age(13) Vaccine(13) Fever(13) therapeutic(13) outcome(13) effective(12) 95% CI(12) Transmission(12) required(12) Viral(12)