americanatscancercarechestchronicclinicianconferencecoughcovidcriticaldetectiondiagnosingdiseasediseasesearlyhesitancyhighlightsicuidentificationidentifyingimmunotherapyimpactintensiveinterviewsliveliverlungmedicaloitpandemicpatientsrsvsocietytherapiesthoracictransplanttreatingtreatmentvaccinevaccines