COVID-19(66) 95% CI(35) Health(35) Analysis(30) reported(28) participant(28) finding(27) SARS-CoV-2(27) age(26) COVID-19 pandemic(26) foundation(25) death(23) risk(22) funding(21) SARS-COV-2 infection(20) country(20) proportion(20) Melinda Gate(20) Intervention(20) pandemic(20) Transmission(19) Treatment(19) eligible(19) estimate(18) Evidence(18) symptomatic(17) calculated(16) clinical trial(16) baseline(16) Effect(16)