There is nothing from the show that indicates that. If this tidbit of info is from the game, then you need to stop.jokershady said:
They made a point early in this episode when Joel said she was infected she yelled back at him "I'm immune and not infected". So because of how her body is protected there's no spores/fungus therefore she's not "seen" as infected by the zombies.
I will say that "kiss" was creepy as hell and did not see that coming….but good creepy….
I was considering the possibility that maybe someday there would be a reveal where Ellie gets ignored by the infected WWZ-style. But your statement, if true, precludes that possibility. Which makes your statement a spoiler as far as I'm concerned.