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