Toxoplasma gondii is not an important contributor to poor reproductive performance of primiparous ewes from southern Australia: a prospective cohort study

Abstract Background Toxoplasma gondii causes reproductive losses in sheep worldwide, including Australia. The reproductive performance of primiparous ewes is typically lower than for mature multiparous ewes, and younger ewes are more likely to be immunologically naïve and therefore more susceptible to reproductive disease if T. gondii infection occurs during pregnancy. The aim of this study was to assess the impact of infection with T. gondii on the reproductive performance of primiparous ewes in southern Australia using a prospective cohort study. This will inform the need for targeted control strategies for T. gondii in Australian sheep. Results Toxoplasma gondii seropositivity using indirect ELISA was detected at 16/28 farms located across southern Australia. Apparent seroprevalence was lower in primiparous ewes (1.1%, 95% confidence interval (CI) 0.6, 1.8) compared to mature multiparous ewes (8.1%, 95% CI 6.0, 10.5; P < 0.001). Toxoplasma gondii seroconversion during the gestation and lambing period was confirmed for 11/1097 (1.0%, 95% CI 0.5, 1.7) of pregnant primiparous ewes that failed to raise a lamb, and 1/161 (0.6%, 95% CI 0.1, 2.9) primiparous ewes with confirmed abortion. Toxoplasma gondii was not detected using qPCR in tissue samples from aborted or stillborn lambs (n = 35) from a subset of six farms. Conclusions Low seroprevalence and low incidence of seroconversion during gestation suggests that toxoplasmosis was not an important contributor to reproductive losses in primiparous ewes on farms located over a wide geographical area in southern Australia.

Download Full-text

The impact of postpartum depressive symptoms on self-reported infant health and analgesic consumption at the age of 12 months: A prospective cohort study

Journal of Psychiatric Research ◽

10.1016/j.jpsychires.2021.02.036 ◽

2021 ◽

Vol 136 ◽

pp. 388-397

Author(s):

Aleksi Ruohomäki ◽

Elena Toffol ◽

Ville Airaksinen ◽

Katri Backman ◽

Raimo Voutilainen ◽

...

Keyword(s):

Cohort Study ◽

Depressive Symptoms ◽

Prospective Cohort Study ◽

Prospective Cohort ◽

Infant Health ◽

Postpartum Depressive Symptoms ◽

Analgesic Consumption ◽

The Impact

Download Full-text

Health literacy, health status and health behaviors of German students– study protocol for the “Healthy Habits” cohort study

BMC Public Health ◽

10.1186/s12889-021-11542-w ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Martin Lange ◽

Alexandra Löwe ◽

Gerrit Stassen ◽

Andrea Schaller

Keyword(s):

Cohort Study ◽

Health Status ◽

Health Literacy ◽

Health Behavior ◽

Health Behaviors ◽

Prospective Cohort Study ◽

Prospective Cohort ◽

The State ◽

The Impact ◽

Study Format

Abstract Background The emerging adulthood is traditionally viewed as a time of optimal health, but also as a critical life span, characterized by changing life circumstances and the establishment of an individual lifestyle. Especially university life seems to hold several challenges impeding the manifestation of a health supporting manner, as many students tend to show a poorer health behavior and a higher amount of health-related problems than comparable age groups. This, along with a steady growth of the higher education sector, brings increased attention to the university setting in the context of prevention. To date, there are few empirical longitudinal and coherent cross-sectional data on the status of students’ health literacy, health status, and health behaviors, and on the impact of the study format on students’ health. The aim of this prospective cohort study is to reduce this research gap. Methods Starting during winter semester 2020/21, the prospective cohort study collects data on health literacy, health status and health behavior on a semester-by-semester basis. All enrolled students of the IST University of Applied Sciences, regardless of study format and discipline, can participate in the study at the beginning of their first semester. The data are collected digitally via a specifically programmed app. A total of 103 items assess the subjectively perceived health status, life and study satisfaction, sleep quality, perceived stress, physical activity, diet, smoking, alcohol consumption, drug addiction and health literacy. Statistical analysis uses (1) multivariate methods to look at changes within the three health dimensions over time and (2) the association between the three health dimensions using multiple regression methods and correlations. Discussion This cohort study collects comprehensive health data from students on the course of study. It is assumed that gathered data will provide information on how the state of health develops over the study period. Also, different degrees of correlations of health behavior and health literacy will reveal different impacts on the state of students’ health. Furthermore, this study will contribute to empirically justified development of target group-specific interventions. Trial registration German Clinical Trials Register: DRKS00023397 (registered on October 26, 2020).

Download Full-text