classification of vaccines

CLASSIFICATION OF VACINES FOUR MAIN TYPES OF VACINE     Live Attenuated Vaccines(LAV) Inactivated (Killed) Vaccines Toxoid Vaccine 4.Subunit vaccines 1 LIVE ATTENUATED VACCINES(LAV)  LAVs are are derived from diseasecausing pathogens(virus or bacteria) that have been weakened under laboratory conditions  Examples are  Measles, Mumps, Rubella, Smallpox, Chickenpox,… INACTIVATED (KILLED) VACCINES  Inactivated vaccines are made from microorganisms (viruses, bacteria, other) that have been killed through physical or chemical processes  Examples are Influenza, Cholera, Polio, Hepatitis A and Rabies TOXOID VACCINE  Toxoid Vaccines are based on the toxin produced by certain bacteria (e.g tetanus or diphtheria)  The immune process produces antibodies that lock onto and block the toxin when the vaccines are administered 4.SUBUNIT VACCINES  Like inactivated vaccines, not contain live components of the pathogen  They differ from inactivated vaccines by containing only the antigenic parts of the pathogen These parts are necessary to elicit a protective immune response CLASSIFICATION OF SUBUNIT VACCINES Subunit vaccines can be further categorized into:  Protein based subunit vaccines  (e.g: pertussis(aP)vaccines,Hepatitis B vaccines.)  Polysaccharide vaccines (e.g: Meningococcal disease, Pneumococcal disease.)  Conjugate subunit vaccines (e.g: Haemophilus influenzae type b (Hib).)  ... components of the pathogen  They differ from inactivated vaccines by containing only the antigenic parts of the pathogen These parts are necessary to elicit a protective immune response CLASSIFICATION. ..FOUR MAIN TYPES OF VACINE     Live Attenuated Vaccines(LAV) Inactivated (Killed) Vaccines Toxoid Vaccine 4.Subunit... of the pathogen These parts are necessary to elicit a protective immune response CLASSIFICATION OF SUBUNIT VACCINES Subunit vaccines can be further categorized into:  Protein based subunit vaccines