They have been reluctant to admit AIDS patients, in part because of unfounded fears of contagion.他们一直不愿意接收艾滋病人, 部分原因是无根据地害怕被接触传染。

I'm a blood donor; I can't risk any contagion.我是献血者, 我不能冒任何接触传染的危险。

He continues to insulate his country from the contagion of foreign ideas.他继续使本国远离外来思想的侵袭。