The first antibiotic was penicillin made my Alexander fleming
Antibiotics kill infective bacteria inside body without harming body cells
Doctors always use specific antibiotics to treat specific bacteria
Antibiotics cannot kill viruses
Painkillers treat the symptoms of a disease by relieving the pain but they don't kill pathogens
Viruses live and reproduce inside human cells. Because of this it is hard for doctors to develop drugs that kill viruses without also damaging the body tissues
