Smiling is at least as contagious as yawning.
As a language, it is, he tells us (at least four times) "contagious, adaptable, populist and subversive".
For both sharing targets areas of least reticence concerned contagious illness, which may reflect norms conducive to sharing under mandatory reporting rules and/or goals of treatment and containment among social contacts [ 37, 38].
While this busy cross-border movement is great for the shop-owners in Namibia, it comes with at least one problem – contagious diseases can also cross over the border.
Since genetics aren't contagious — at least not within a generation — this led him to wonder whether it was possible that the healthy roommates or spouses were being colonized, over time, by the malevolent bacteria.
Many captains specialised in this small Sierra Leonean island (including John Newton, who later wrote the hymn "Amazing Grace"), but this area of Africa, known as "the white man's grave", was replete with dangers, not least of which were contagious diseases and potential native hostility.
As bad as cancer is in humans, at least it's not contagious.
Turns out it's also contagious — at least, if you're in the business of trying to build a rival social property, as Just.me, a U.S. mobile messaging startup that wants to become a one-stop-messaging-cum-social-sharing-platform, undoubtedly is.
Typically, a person is contagious for at least a week following onset of symptoms.
