What exactly are bacteria, and how exactly can they make us sick?
Bacteria is a type of single cell microbe that cluster together and can live in isolation without the help of a host cell. The bad bacteria is what can kill you. If bad bacteria enters your bloodstream due to some kind of breach in the defensive layer of a human, they will multiply and attack the body cells and if they kill enough cells, the whole body could fail.
What types of medical interventions can be helpful once infected with bacteria?
Antibiotics can be useful for treating bacteria. They generally target the antigens on some bad and some good bacteria and prevent them from reproducing into other bacterium.