Publications by authors named "Lacourse E"

Previous studies indicate differences in experiences of loneliness during the COVID-19 pandemic but are constricted by limited timeframes and absence of key risk factors. This study explores temporal and inter-individual variations of loneliness in Canadians over the pandemic's first year (April 2020-2021), by identifying loneliness trajectories. It then seeks to provide information about groups overrepresented in high and persistent loneliness trajectories by examining their associations with risk factors: social isolation indicators (living alone, adherence to health measures limiting in-person contacts, and online contacts), young adultood, and the interactions between these factors.

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To shed first light on caprine schistosomiasis and its zoonotic potential in Malawi, we conducted a molecular epidemiological investigation, sampling goats ( = 230) across three districts, using faecal miracidia hatching test. Molecular genotyping of miracidia later revealed the prevalence of to be 0.0 % in Nsanje District ( = 30), 16.

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Parasitic nematodes have an intimate, chronic and lifelong exposure to vertebrate tissues. Here we mined 41 published parasitic nematode transcriptomes from vertebrate hosts and identified 91 RNA viruses across 13 virus orders from 24 families in ~70% (28 out of 41) of parasitic nematode species, which include only 5 previously reported viruses. We observe widespread distribution of virus-nematode associations across multiple continents, suggesting an ancestral acquisition event and host-virus co-evolution.

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  • * Researchers collected demographic and health data, along with urine and semen samples from 22 men, finding high rates of schistosome infection and co-infection with HPV and other STIs.
  • * The study highlights the complex interactions between zoonotic and hybrid schistosomes in causing MGS, illustrating significant challenges for diagnosis and treatment in low-resource areas.
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  • A study in Malawi found a high prevalence of bovine schistosomiasis in cattle, with around 49.1% infected based on a miracidia hatch test, though there were notable differences in infection rates across different areas.
  • In a specific herd near Lake Malawi, researchers used GPS tracking to monitor infection levels, discovering that while treatment was initially effective, reinfection occurred, especially in younger cattle.
  • The findings highlight the need for a One Health approach to control schistosomiasis, addressing the interconnected issues of human and animal health, particularly in the context of zoonotic disease transmission in areas like Mangochi District.
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Background: The giant roundworm Ascaris is an intestinal nematode, causing ascariasis by infecting humans and pigs worldwide. Recent estimates suggest that Ascaris infects over half a billion people, with chronic infections leading to reduced growth and cognitive ability. Ascariasis affects innumerable pigs worldwide and is known to reduce production yields via decreased growth and condemnation of livers.

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  • * It found that good relationships with parents and friends can reduce feelings of sadness in their early and mid-20s, while romantic relationships start to matter more as they get older.
  • * Overall, the research suggests that both positive and negative experiences in relationships can impact mental health, and having strong social connections may help prevent serious issues in young people.
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The COVID-19 pandemic has produced unprecedented changes in the lives of many people. Although research has documented associations between concerns related to COVID-19 and poor mental health indicators, fewer studies have focused on positive factors that could help people better cope with this stressful social context. To fill this gap, the present research investigated the trajectories of self-compassion facets in times of dramatic social change.

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Aim: This study aimed to investigate the associations between health behavior adherence and psychological factors during the COVID-19 pandemic, with a particular focus on identifying trajectories of handwashing, mask wearing, social contact limitations, and physical distancing.

Methods: We employed a multi-trajectory group-based approach to analyze data from 6026 Belgian residents, including 60% women, with an average age of 52.65.

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Non-mainstream rock music preferences, like goth, are linked to psychological difficulties in adolescence and emerging adulthood. This study explored the persistence of these difficulties into adulthood, while considering gender moderation. From ages 15 to 22, 364 participants (59% female) annually indicated their preference for goth music.

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From the safety inside vehicles, Knowsley Safari offers visitors a close-up encounter with captive olive baboons. As exiting vehicles may be contaminated with baboon stool, a comprehensive coprological inspection was conducted to address public health concerns. Baboon stools were obtained from vehicles, and sleeping areas, inclusive of video analysis of baboon–vehicle interactions.

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Male genital schistosomiasis (MGS) is hypothesized to increase seminal shedding of HIV-1. This prospective pilot study assessed seminal HIV-1 RNA shedding in men on long-term ART with and without a diagnosis of MGS. Study visits occurred at 0, 1, 3, 6 and 12 months.

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Previous studies have highlighted the importance of promoting health literacy and minimizing misinformation to encourage higher adherence to key public health measures during the COVID-19 pandemic. This study explores how one's self-reported understanding of information and types of sources used to get information regarding COVID-19 can hinder adherence to public health measures implemented by the Canadian government. Data was collected following a longitudinal design of 11 time points for April 2020 to April 2021.

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  • - The study focuses on male genital schistosomiasis (MGS) in Malawi, revealing it as a significant yet underrecognized issue among adult fishermen, with a prevalence of 26.6% detected through advanced PCR testing.
  • - A total of 376 participants provided samples, with 210 urine and 114 semen tested, leading to a notable persistence of MGS despite treatment with praziquantel at various follow-up intervals.
  • - The research emphasizes the importance of developing affordable and accessible molecular diagnostic tests for MGS in sub-Saharan Africa, given the high prevalence and ongoing challenges in managing the disease.
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  • Knowsley Safari conducted a coprological survey in June 2021 to check for liver fluke infections in 330 fecal samples from 18 exotic ungulate species, focusing particularly on vicuñas.
  • The survey found fascioliasis in all five vicuñas, and while the first treatment was inconclusive, a second treatment with triclabendazole proved effective.
  • To improve fluke management in the future, the study recommends regular fecal and snail monitoring, along with timely treatment when necessary.
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Introduction: We investigated whether initial risk classes and heterogeneous trajectories of self-compassion over the course of the pandemic may impact well-being outcomes 1 year into the pandemic.

Methods: A large, representative sample of Canadians ( = 3,613; 50.6% women) was sampled longitudinally over 11 waves (April 2020-April 2021), using a rolling cross-sectional survey design.

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  • * Genetic analyses of 76 snail specimens revealed five closely related haplotypes, with only one haplotype being common across different sampled areas, and no variation in microsatellite loci.
  • * The prevalence of infected snails in this area was 31%, indicating low genetic diversity among the host snails and suggesting an ongoing local transmission of the schistosomiasis parasite.
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Objectives: Previous studies found a general increase in prejudice against Chinese people during the first months of the pandemic. The present study aims to consider inter-individual heterogeneity in stability and change regarding prejudice involving Chinese people during the pandemic. The first objective is to identify and describe different trajectories of prejudice over a seven-month period during the pandemic.

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As part of surveillance of snail-borne trematodiasis in Knowsley Safari (KS), Prescot, United Kingdom, a collection was made in July 2021 of various planorbid ( = 173) and lymnaeid ( = 218) snails. These were taken from 15 purposely selected freshwater habitats. In the laboratory emergent trematode cercariae, often from single snails, were identified by morphology with a sub-set, of those most accessible, later characterized by cytochrome oxidase subunit 1 (1) DNA barcoding.

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  • - The freshwater snail genus plays a crucial role in the transmission of schistosome parasites, with a hybrid schistosome recently identified among school children along the Lake Malawi shoreline.
  • - Malacological surveys conducted in 2017 and 2018 collected and analyzed 250 snails from various freshwater sites, revealing at least three distinct taxa in the lake and showcasing new methods for differentiating them.
  • - The study found that 28.30% of the sampled snails tested positive for schistosome DNA, indicating significant changes in the epidemiology of urogenital schistosomiasis related to the diversity of snail species in the area.
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Schistosome eggs cause granulomata and pathological abnormalities, detectable with non-invasive radiological techniques such as ultrasonography which could be useful in male genital schistosomiasis (MGS). As part of our novel MGS study among fishermen along Lake Malawi, we describe pathologies observed on ultrasonography and praziquantel (PZQ) treatment over time. Fishermen aged 18+ years were recruited, submitted urine and semen for parasitological and molecular testing, and thereafter, transabdominal pelvic and scrotal ultrasonography, assessing pathologies in the prostate, seminal vesicles, epididymis and testes.

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Ascaris species are soil-transmitted helminths that infect humans and livestock mainly in low and middle-income countries. Benzimidazole (BZ) class drugs have predominated for many years in the treatment of Ascaris infections, but persistent use of BZs has already led to widespread resistance in other nematodes, and treatment failure is emerging for Ascaris. Benzimidazoles act by binding to β-tubulin proteins and destabilising microtubules.

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