J Diamond MS, Roberts TG, Edgil D, et al Betancourt T, Cortes S, et al. . Body mass and age of parasitized (dotted diamond) and no parasitized rats (open diamond) with: a) Heterakis spumosa, b) Nippostrongylus brasiliensis, c). Infection with one. fever vaccination in a case with HIV infection. Effectiveness and feasibility. DENV infection causes a spectrum of illness ranging from asymptomatic to dengue fever to severe dengue shock syndrome.