contagiaron
-they transmitted
The word contagiaron is the preterite form of contagiar in the third person plural.
See the full contagiar conjugation

contagiar

Muchos en sus familia se contagiaron, pero por suerte ella sobrevivió.
Many of her family members became infected, she luckily survived.
Mire, de verdad lo siento si algunas de esas chicas se contagiaron.
Look, I'm sorry if some of these girls got sick.
Sé que algunas de las chicas se se contagiaron.
I know a couple of the girls caught it.
Se contagiaron al beber vino parcialmente fermentado justo afuera de los barriles.
They got it from drinking partially fermented wine right out of the barrels.
La inmensa mayoría de éstos se contagiaron por consumir drogas por vía intravenosa.
The overwhelming majority of them were infected through injecting drug use.
La referencia al ateísmo arrancó aplausos en algunos grupos, que contagiaron a la multitud.
The reference to atheism brought applause from some groups, which became contagious.
Están involucrados, contagiaron la enfermedad a la gente.
They're involved, they gave people disease.
Te contagiaron también, ¿verdad?
They got to you, too, huh?
Antes había mucha comida, vino mucha gente y se contagiaron unos a otros.
There was a lot of food here at first... so people gathered here and infected each other.
Pero la mayoría de ellos se contagiaron, y lo más duro será que vamos a estar suprimiendo los síntomas.
But the more they get hit, the harder time we're gonna have suppressing the symptoms.
Los tunecinos no contagiaron a los egipcios sino que les abrieron los ojos a los occidentales sobre lo que está sucediente en la región.
The Egyptians were not infected by the Tunisians, but the latter opened the eyes of the Western world to what was happening in that region.
Se contagiaron entre sí o en un mismo lugar.
They either got it from each other or in the same place.
Al parecer se contagiaron todos en un cine.
Apparently they all got it at a movie theater.
Muchos muchachos se la contagiaron en la guerra.
Lots of the lads had it in the war.
No hay manera de como se contagiaron todos al mismo tiempo.
There's no way they could have all caught it by now.
Parece que se contagiaron la conjuntivitis.
Looks like they got a touch of that pinkeye that's going around.
Además, los problemas financieros se contagiaron a muchas otras clases de activos financieros por cauces a menudo imprevistos e inocuos.
In addition, the financial problems spread to many other financial asset classes through often unanticipated and innocuous channels.
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