Adolescent Children of Adolescent Mothers: The Impact of Family Functioning on Trajectories of Development

This study drew on four cycles of longitudinal data from the Canadian National Longitudinal Survey of Children and Youth to examine the academic and behavioural trajectories of youth between 10 and 15 years of age as a function of maternal age at childbearing. The analyses controlled for several family characteristics and examined the mediating effects of three family functioning variables (maternal depression, and nurturing and rejecting parenting behaviours). Maternal age was related to academic competency in math (standardized Math scores), externalizing disorders (Property Offences, Hyperactivity-Inattention), and internalizing disorders (Anxiety-Emotional Disorder). After accounting for family characteristics, the children of the young and older teen mothers retained their disadvantage in Math scores and Property Offences, respectively, whereas the children of older mothers lost the advantages that they had exhibited at age 10 (for Property Offences, the benefits were mediated through family functioning). These results have implications for future research and for the development of policy and programming targeting the healthy development of youth.

Effect of Sterilants on Amplification and Detection of Target DNA from Bacillus cereus Spores

To conceal criminal activity of a bioterrorist or agroterrorist, the site of pathogen generation is often treated with sterilants to kill the organisms and remove evidence. As dead organisms cannot be analyzed by culture, this study examined whether DNA from sterilant‐treated Bacillus cereus spores was viable for amplification. The spores were exposed to five common sterilants: bleach, Sterilox®, oxidizer foam (L‐Gel), a peroxyacid (Actril®), and formaldehyde vapor. The spores were inoculated on typical surfaces found in offices and laboratories to test for environmental effects. It was found that the surface influenced the efficiency of recovery of the organisms. The DNA isolated from the recovered spores was successfully detected using RT‐qPCR for all treatments except for formaldehyde, by amplifying the phosphatidylinositol phospholipase C and sphingomyelinase genes. The results demonstrated that evidence from sites treated with sterilants can still provide information on the uncultured organism, using DNA amplification.