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. 2016 Mar 3;143(7):821–834. doi: 10.1017/S0031182016000044

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© Cambridge University Press 2016

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — Plausible alternative epidemiological scenarios for inter-species transmission and sources of human Brucella infection. Arrows indicate the direction and magnitude of transmission. Question marks indicate that transmission occurs with an unknown magnitude (which will be estimated by our models). In Scenario 1, humans can be infected by caprids with B. melitensis and cattle with B. abortus; in Scenario 2 caprids with B. melitensis can transmit to humans and cattle but only caprids can transmit infection to humans; and in Scenario 3 both caprids and cattle with B. melitensis can infect humans.