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  • The burden of vector-borne diseases (Dengue, Zika virus, yellow fever, etc.) gradually increased in the past decade across the globe. Mathematical modelling on infectious diseases helps to study the transmission dynamics of the pathogens. Theoretically, the diseases can be controlled and eventually eradicated by maintaining the effective reproduction number, ([Image: see text] ), strictly less than 1. We established a vector-host compartmental model, and derived ([Image: see text] ) for vector-borne diseases. The analytic form of the ([Image: see text] ) was found to be the product of the basic reproduction number and the geometric average of the susceptibilities of the host and vector populations. The ([Image: see text] ) formula was demonstrated to be consistent with the estimates of the 2015–2016 yellow fever outbreak in Luanda, and distinguished the second minor epidemic wave. For those using the compartmental model to study the vector-borne infectious disease epidemics, we further remark that it is important to be aware of whether one or two generations is considered for the transition “from host to vector to host” in reproduction number calculation.
Subject
  • Epidemics
  • Epidemiology
  • Parasitology
  • Pandemics
  • Populated places established in 1576
  • 1576 establishments in the Portuguese Empire
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