Portuguese word anticontágio comes from Portuguese anti- (Anti-.), Portuguese contágio (Contagion (transmission of a contagious disease).)

Detailed word origin of anticontágio

Dictionary entry	Language	Definition
anti-	Portuguese (por)	Anti-.
contágio	Portuguese (por)	Contagion (transmission of a contagious disease).
anticontágio	Portuguese (por)	(medicine) anticontagious (preventing or destroying contagion).