Association between maternal schizophrenia and risk of serious asthma exacerbations in childhood.

Background And Hypothesis: While maternal schizophrenia is linked to chronic childhood medical conditions, little is known about the risk of acute asthma exacerbations among children whose mothers have schizophrenia. This population-based study used health data for all of Ontario, Canada to evaluate whether having a mother with schizophrenia was associated with increased risk of asthma exacerbations.

Study Design: The study cohort included 385,989 children diagnosed with asthma from age 2 years onward, followed from the time of their asthma diagnosis up to a maximum of age 19 years.

Effects of live yeast on milk yield, feed efficiency, methane emissions and fertility of high-yielding dairy cows.

Live yeast (Saccharomyces cerevisiae) products have the potential to increase milk yield of dairy cows in early lactation by improving rumen fermentation. Greater milk yields, however, are sometimes associated with poorer reproductive performance. This study aimed to assess the effect of a live yeast supplement on milk yield, methane emissions and reproduction indicators in high-yielding dairy cows.

Morbidity among resettled refugees at arrival in Ontario, Canada (1994-2017): a controlled interrupted time series study examining the effect of the Immigration Refugee Protection Act, 2002.

Background: Immigration inadmissibility on medical grounds is common among high-income countries. In Canada, the Immigrant and Refugee Protection Act (IRPA) became law in 2002. With humanitarian protection as a priority, IRPA removed medical inadmissibility based on exceeding a cost threshold for the projected use of health and social services for resettled refugees.

A cutaneous sensory nerve schwannoma occluding the external auditory canal.

Schwannomas are benign tumours derived from Schwann cells of the peripheral nerve sheaths. A schwannoma arising in the external auditory canal (EAC) is rare, with few cases reported in the literature. These tumours present a unique challenge and should be considered when patients present with persistent ear symptoms in the absence of common otological pathology.