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