Thank you for the upvote

A Time Traveler Who Chose the Wrong Year and they landed in exactly the wrong time and wrong place as they have click 6 years ago which would make them travel back to the year 2020 where it is the year the Covid-19 pandemic happened and millions of people have died back then. Since they already know that there is a vaccine for the disease, they have spread the word to the people they are close with and the word has spread which helps them navigate the pandemic more efficient