Under the above assumption, equations (7) are rewritten to incorporate the malaria dynamics in equation (11) where j is a parameter that models change the increase (or decrease) in susceptibility to Hepatitis E of malaria infected individuals [12] . The other parameters are as defined in equations (7) and remain as defined there. We assume here that after exposure to HEV, both the susceptible and malaria infected groups join the exposed, E and subsequently the I group. In other words, individuals that harbor both infections are assumed to develop HEV symptoms at the same speed as those with only HEV. The dynamics of this model for standard parameter values are shown in Figure 2 .