Published online 2013
A study in US reported evidence of the transmission of rubella vaccine virus from vaccinees to two susceptible contacts.
A pregnant mother contracted the [varicella] vaccine virus after her 12-mo-old boy received varicella vaccine.
Horizontal transmission was reported in 15 (17%) susceptible healthy siblings after varicella vaccination of 156 children with leukemia.
A randomized, double-blind study on human rotavirus vaccine… in 100 pairs of healthy twins found that the transmission rate among placebo recipients was 18.8%.