Which groups of people can’t get vaccines because of possible negative side effects?
ASAP

I hope this answers your question. Some people can't get certain vaccines when they are certain ages. If you are too young(just born) or too old, you may not want to have vaccines that can be hard on your body. People with certain health risks shouldn't get vaccines either. Another example would be someone has a severe reaction to a vaccination, they shouldn't get a booster for the vaccine in the future.

Explanation:

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

answer; polycythemia is the correct answer;