**3.5 Infection through conjunctiva**

Vaccines for *B. abortus* include strain 19 and RB-51, and those for *B. melitensis* include Rev-1. Any contact with infected tissue or body fluids, such as a splash onto the conjunctiva of the eye or a needle stick from a vaccine administered when working with animals, can lead to self-inoculation. Vaccines administered via conjunctive splash are likely to be more potent than those administered via injection. That is why it is possible to catch brucellosis through the eyes' conjunctival sac [24].

#### **3.6 Blood and bone marrow transfusion**

Contaminated blood and bone marrow transfusions are other potential routes of transmission. This transfusion has a high risk of *Brucella* transmission [25].
