Inactivated vaccines are bacteria or viruses that are killed by heat or chemicals and sometimes also by radiation. These types of vaccines are used against bacteria and viruses. Examples of viral vaccines would be rabies or hepatitis A. The common inactivated bacterial vaccine would be TDAP, which is the diphtheria, tetanus and pertussis vaccine. Unlike live vaccines, you can give inactivated vaccines to patients with weakened immune systems. Also another pus compared to live pus, this one does not need to be refrigerated so this one can be sent over seas if necessary.