1.3.5  Conjugate vaccines

A conjugate vaccine is made by conjugating (joining together by chemical bonds) an antigen from an infectious agent and a large ‘carrier’ protein. The combination makes the antigen more immunogenic than it would be on its own. An example is the Haemophilus influenzae type b (Hib) vaccine included in the pentavalent vaccine in Ethiopia.

Now we turn our attention to how these vaccines are used in Ethiopia.

1.3.4  Recombinant vaccines

1.4  The Expanded Programme on Immunization