PT - JOURNAL ARTICLE AU - Susan Kuhn AU - Loreto Twele-Montecinos AU - Judy MacDonald AU - Patricia Webster AU - Barbara Law TI - Case report: probable transmission of vaccine strain of yellow fever virus to an infant via breast milk AID - 10.1503/cmaj.100619 DP - 2011 Mar 08 TA - Canadian Medical Association Journal PG - E243--E245 VI - 183 IP - 4 4099 - http://www.cmaj.ca/content/183/4/E243.short 4100 - http://www.cmaj.ca/content/183/4/E243.full SO - CMAJ2011 Mar 08; 183 AB - The 17D yellow fever vaccine is a live-virus vaccine that has been in use since the 1940s. The incidence of encephalitis after yellow fever vaccination among young infants is much higher than among children older than nine months of age. Until recently, avoidance of vaccination by breastfeeding women who have received yellow fever vaccine had been based on theoretical grounds only. We report the probable transmission of vaccine strain of yellow fever virus from a mother to her infant through breastfeeding.