[1] Examples of this in bacteriology are the overgrowth of endogenous Clostridioides difficile that occurs following treatment with a broad-spectrum antibiotic, and pneumonia or sepsis from Pseudomonas aeruginosa in some immunocompromised patients.
Viral superinfections may also be less susceptible to the host's immune response.
[4] In Zika virus infection, there is some evidence that primary infection of another Flavivirus, Binjari virus, results in the direct inhibition of a secondary infection of Zika virus in mosquito cells.
[5] Recent metagenomic analyses have demonstrated that the novel coronavirus, SARS-CoV-2 can be associated with superinfection and colonization of other pathogens, such as rhinovirus species and Moraxella spp.
[6] In parasitology, superinfection is reinfection of the same genus of parasite, as a person infected by Fasciola hepatica again infected by Fasciola gigantica.