Technically I do believe this is possible. What is used for animals has the size of a rice seed? I chipped many different animals and have seen the different needles used for vaccines and it can be done.
At this moment I am more worried about the development of dictatorship in own country. The fact is everything can be done in name of a coronavirus. The virus isn't new neither is a virus that pops up every few years. Search for the Mexican flu (Influenza A)