"A PG-13 virus thriller might sound like a contradiction in terms, but for the most part, "Carriers" spreads its bleak vision of post-pandemic terror to fairly chilling effect. Alas, in apparent avoidance of an R, the film fails to clarify the particular threat of its infected citizens, red-faced ghouls who look plenty scary and are indeed contagious, but are never shown to bite. Put into extremely limited release by Paramount Vantage after spending years in studio lockdown, "Carriers" has moments of genuinely communicable horror and thus deserves better than a de facto theatrical quarantine." - Rob Nelson, Variety