Infant Monkeys At The Washington National Primate Research...

Burbacher and Shen did a study with forty-one infant monkeys at the Washington National Primate Research Center’s Infant Primate Research Laboratory (Burbacher). The birth weights of each infant monkey were within the normal range; the average birth weight was 341 grams and the range was 225-420 gram. Monkeys were weighed daily throughout the study, and any clinical problems were recorded. This experiment mainly compared the natural mentality and brain distribution of infant monkeys and the inorganic mercury in infant monkeys after the thimerosal were exposure with those exposed to methylmercury (MeHg). Monkeys were injected thirmerosal at birth and 1, 2, 3 weeks of age so they could get exposed to the MeHg. Infants were divided into†¦show more content†¦These monkeys did not receive any injections. Infants were assigned to the three groups on a semi-random basis, in order to balance sex ratios and average birth weights across groups. Once monkeys exposed to the mercury or after the injection of Hg, some of the infants was sacrificed in days 2, 4, 7, or 28 in order to exam the brain of the monkeys (Burbacher). Based on our result, the brain weights at sacrifice and brain-to-body weight showed no difference. Also, no serious medical complications were observed in any of the monkeys when they were examined. In addition the weights of infant monkeys during the study showed no significant differences in the weight gain across the three groups the average weight gain during the first 23 days of life was 13 g. In concluding, this research shows that there is no link between the mercury and autism. The goal of â€Å"Neuropsychological Performance 10 Years After Immunization in Infancy With Thimerosal-Containing Vaccines† study was to investigate if thimerosal has any affect to neuropsychological development (William.). Children who were born in 1992-1993 were conducted in this study. A total of 15,601 healthy chil dren, 2-month-old infants were enrolled in the Italian Trial on Pertussis Vaccines. These children were randomly assigned into four groups, under double blind condition to receive 3 doses of 1 of 4 vaccines, 2 of which were DTaP vaccines from 2 different