By Christina England
April 5, 2011
Just when we thought the world could not get any more insane, it does! News came in today of a study entitled ‘Inhibitory Effect of Breast Milk on Infectivity of Live Oral Rotavirus Vaccines’ advising nursing mothers to delay breast-feeding until after vaccinations. According to the authors this is because breastfeeding lowers the vaccines efficiency!!!
A paper outlining the study was written by Sung-Sil Moon, PhD, Yuhuan Wang, MS, Andi L. Shane, MD, MPH, MSc, Trang Nguyen, PhD, Pratima Ray, PhD,§ Penelope Dennehy, MD, Luck Ju Baek, PhD, Umesh Parashar, MB BS, MPH,Roger I. Glass, MD, PhD, and Baoming Jiang, DVM, PhD. This long list of experts were from the National Centres for Immunization and Respiratory Disease, Centres for Disease Control and Prevention, Atlanta, GA; Division of Paediatric Infectious Disease, Emory University, Atlanta, GA; The National Institute of Hygiene and Epidemiology, Hanoi, Vietnam; Department of Paediatrics, All India Institute of Medical Sciences, Delhi, India; Department of Paediatrics, Rhode Island Hospital, Providence, RI; Department of Microbiology, and the College of Medicine.
The purpose of this study was to determine why live oral rotavirus vaccines have been less immunogenic and efficacious among children in poor developing countries compared with middle income and industrialized countries. To establish a reason for this breast-milk was examined from mothers from India, Vietnam, South Korea and the USA. The milk was assessed to see whether or not the neutralizing activity of breast milk could lower the titer of vaccine virus and explain this difference in vitro.