Hepatitis B and C are transmitted primarily through blood contact.

In towns and cities, the virus is primarily transmitted by, the highly domesticated, A. aegypti.

It is transmitted primarily via narrowcast stations of varying power.

Peru's outbreak of the disease appears to have been primarily transmitted through its large fishing industry.

The disease is transmitted primarily via the fecal-oral route, by ingesting contaminated food or water.

These diseases are transmitted primarily through "skin-to-skin" contact from sores/ulcers or infected skin that looks normal.

HPV infections in that area are transmitted primarily via sexual activity.

Light is transmitted primarily through the protrusions as a result of this localized guiding effect.

As with any text that is still primarily transmitted orally, many versions exist.