Because your parents aren't dying from air pollution tomorrow, but they might from COVID. And the vaccine can stop it, and there's a race between DELTA and the

Because your parents aren't dying from air pollution tomorrow, but they might from COVID. And the vaccine can stop it, and there's a race between DELTA and the vaccine for your parents lives. The story is a bit different in the US, where its more about people not wanting to take it, and an often cited reason is that the virus is going way whether or not that get vaccinated (because other people are). If that story changes, then their reasoning is no longer valid.