In several maternal viral diseases, such as hepatitis, herpes, measles, mumps and rubella, among others, the virus may be excreted into human milk. HIV-2 can also be transmitted from mother to infant, but the role of breastfeeding in the transmission via human milk has not been clearly established yet.Click to see full answer. Then, is it safe to get the rubella vaccine while breastfeeding? Rubella Vaccine Levels and Effects while Breastfeeding A study of mothers vaccinated with the Cendehill strain of live, attenuated rubella virus found no transmission of the live virus to their breastfed infants.  However, rubella vaccine virus can appear in breastmilk and result in infections in some infants.Beside above, do vaccines transfer through breast milk? After the vaccine is administered, these viruses have to replicate until there are enough for the immune system to recognise and respond to. The measles, mumps, and varicella vaccine viruses have not been found in breast milk after maternal immunisation. The rubella vaccine virus has been found in breast milk. Just so, can leptospirosis be transmitted through breast milk? Potential breastfeeding transmission of leptospirosis has been reported in a human newborn , and leptospires have also been isolated from human milk . However, there is no evidence that infection from milk is a common route for transmission.Does MMR vaccine pass through breast milk?Answer: By breastfeeding, you may pass some antibodies you have made in response to the MMR vaccine to your child.