IPA: //ˌkoʊɪnˈfɛktɪd//
KK: /kɔɪnˈfɛktɪd/
Having two or more infections at the same time from different organisms.
The patient was coinfected with both the flu virus and a bacterial infection.
Coinfected → It is formed from "co-" (meaning together) and "infected" (from Latin "infectus", meaning to taint or contaminate). The word "coinfected" means to be infected by two or more pathogens simultaneously, indicating a joint infection.
Think of being 'together' ('co-') with an 'infection' — that's why coinfected means having multiple infections at the same time.