There are huge challenges in the quest for herd immunity with millions of adults in Illinois remaining unvaccinated. Full story: ABC7ChicagoCoronaviruscoronavirus immunitycovidcovid vaccineCOVID-19COVID19dupage county fairgrounds covid vaccineget covid vaccineHerdherd immunityherd immunity definitionherd immunity percentagehesitancyillinoisimmune systemIMMUNITYnewsPfizer vaccinePutsraceVaccinevaccine hesitancyvideoVITAMINvlogwhat is herd immunityYouTubeRelated Posts COVID’s New Variant Is Spreading Faster Than Expected April 16, 2026 These Aren’t Just Hormone Problems April 16, 2026 New COVID Variant ‘Cicada’ Spreading Across U.S. | Seniors at Highest Risk April 15, 2026 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