Why did Dr KK Aggarwal lose his life even after both doses of Corona vaccine?

Former President of Indian Medical Association, Dr. KK Aggarwal, has passed away due to the deadly Coronavirus. He was on a ventilator for a week and has now succumbed to the COVID-19 disease. Dr. KK Aggarwal helped in spreading awareness about Coronavirus via his social media accounts. Take a look at the video.