You bring up a good point. In the UK, they are already talking about new shots for new strains. Maybe they could start mailing them to people and they could learn to do it themselves.Everything is still pretty unreliable as everything is still new with the vaccine. Right now the CDC site is showing the Phizer vaccine is only good for 2-3 months. What do they want, people to get the series of shots 4xs a year? This was info from my work and the hospital that oversees my job.