Experts look into why fully vaccinated people are still getting coronavirus

COVID-19 cases among those who are fully vaccinated continue to rise as experts look into it. Experts noted a number of reasons why this is happening, including the highly contagious Delta variant. None of the vaccines deployed around the US and Europe is 100% effective at preventing the infection and it remains unclear how long immunity from the coronavirus vaccine lasts. Data out of Israel found that the Pfizer-BioNTech COVID-19 vaccine was only 40.5% effective at preventing symptomatic disease while a different study in England found the vaccine to be 88% effective against symptomatic disease caused by the Delta variant.