Nosocomial infections are commonly transmitted when hospital officials become complacent and personnel do not practice correct hygiene regularly.

Human papillomavirus (HPV) is the most commonly transmitted sexually transmitted disease, affecting both men and women.

Some evidence claims that EBV is also commonly transmitted through sexual intercourse.

Leishmaniasis, most commonly transmitted through the bite of a sandfly, usually causes only skin lesions.

The spirochetes are commonly transmitted to humans by deer ticks in the nymph stage.

College students in Iowa account for about 23 percent of the reported cases of the infection, commonly transmitted by coughing or sneezing.

There are two infestations that are commonly transmitted in this way although there is no absolute necessity for this mode of transmission.

Syphilis is commonly transmitted from pregnant women to their fetuses, and about a third of the infected children will eventually become deaf.

It is commonly transmitted by direct line, or by adoption.

The disease is commonly transmitted to farmed birds by infected migrating birds.