More health and medical news on the Mayo Clinic News Network.Journalists: Clean and nat sound versions of this pkg available for download atRegister (free) at ComplicationsCoronavirusCOVID-19COVID19Dr. Gregory PolandHealth Care (Issue)Healthcare Science (Field Of Study)immune systemIMMUNITYlongtermMayo ClinicsymptomsVaccine Research GroupvideoVITAMINvitamin covid19vlogYouTubeRelated Posts Persistent immune activation and MS explosion #diseaseprevention April 13, 2026 Cicada COVID Variant Spreading in U.S. | What Doctors Want You to Know Now April 12, 2026 New COVID Variant Affecting Kids April 7, 2026 What to know about ‘Cicada,’ the new COVID-19 variant #shorts April 6, 2026 New ‘Cicada’ COVID variant detected as experts urge caution April 4, 2026 New COVID variant spreading April 2, 2026