Efficacy of vitamin D2 in maintaining serum total vitamin D concentrations and bone mineralisation in adult dogs fed a plant-based (vegan) diet in a 3-month randomised trial.

Dogs are considered omnivores based on their evolution consuming diets including animal tissue. Few feeding trials evaluating the nutritional suitability of exclusively plant-based (vegan) diets in dogs have been published, and the efficacy of vitamin D2 in maintaining canine serum vitamin D levels has not been clearly determined. A blinded dietary trial included sixty-one healthy desexed adult dogs: thirty-one fed an experimental extruded vegan diet (PLANT) and thirty fed a commercial extruded meat-based diet (MEAT) for 3 months. Dogs were screened via veterinary examination and routine laboratory analyses prior to enrolment, at baseline and exit timepoints. Body composition was measured by dual-energy X-ray absorptiometry and blood was collected for vitamin D profiling. All dogs maintained health parameters, body weight and composition throughout the study. Dogs maintained on PLANT demonstrated a significant reduction in platelet count, creatinine, blood urea nitrogen and cholesterol, though values remained within normal reference ranges. Dogs fed PLANT also demonstrated a shift from vitamin D3 to vitamin D2 metabolites, though total vitamin D analogue levels were unchanged, with the exception of 24,25-dihydroxyvitamin D. Bone mineral content and density did not differ from baseline values. Health status was maintained in dogs fed PLANT and vitamin D2 appeared efficacious in maintaining serum total vitamin D concentrations and bone mineralisation. Findings support the hypothesis that PLANT was comparable to MEAT for maintenance of healthy adult dogs for at least 3 months and identified areas where further research is warranted to elucidate the potential risks and benefits of plant-based (vegan) diets.

Sociodemographic factors associated with knowledge of type 2 diabetes in rural Tamil Nadu, India.

INTRODUCTION: This study aimed to investigate awareness of type 2 diabetes and how sociodemographic factors influence diabetes knowledge in a rural population of Tamil Nadu, India. Previous research has identified poor awareness of diabetes in several low and middle-income countries, which can lead to a high prevalence of undiagnosed diabetes. India having the second highest prevalence of diabetes globally, it is increasingly important to assess how diabetes can be addressed in rural Indian populations. METHODS: Systematic random sampling was used to gather study participants in 17 villages within the Krishnagiri district of Tamil Nadu, India. Data on diabetes knowledge was collected using a validated questionnaire. Knowledge score range was 0-8; a score of zero was designated as 'low knowledge', scores 1-4 as 'moderate knowledge', and scores 5-8 as 'good knowledge'. Associations between sociodemographic factors and composite diabetes knowledge score were assessed using a multinomial logistic GLLAMM model in Stata. RESULTS: A total of 753 individuals participated in the study. The average age of participants was 47 years and 55% were women. Overall awareness of diabetes was low, with 66% of individuals having no knowledge of diabetes. Only 16% and 17% achieved a moderate and a good knowledge score, respectively. Achieving a moderate knowledge score was significantly positively associated with education, wealth, participation in the Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA), and business ownership as a source of income. Achieving a good knowledge score was significantly positively associated with education, wealth, rurality, participation in MGNREGA, business ownership as a source of income, and frequency of healthcare utilization. Rurality was significantly negatively associated (relative risk ratio (95% confidence interval)) with both moderate knowledge score (0.34 (0.19-0.59)), and good knowledge score (0.43 (0.24-0.74)). The strongest predictor of having a good knowledge score was having a high-school graduate or post-secondary education (11.07 (4.44-27.61)). Enrolment in MGNREGA employment was the strongest predictor for having a moderate knowledge score (3.27 (1.93-5.54)), as well as strongly associated with having a good knowledge score (2.39 (1.31-4.36)). CONCLUSION: The low awareness of diabetes among participants of this study raises serious concerns for public health in India. Public health efforts must prioritize health equity to lessen the impacts of diabetes in rural populations, where individuals face systemic barriers to receiving prevention and treatment for conditions such as diabetes.

A cross-sectional study of owner-reported health in Canadian and American cats fed meat- and plant-based diets.

BACKGROUND: Cats, being obligate carnivores, have unique dietary requirements for nutrients most commonly found in dietary ingredients of animal origin. As such, feeding a diet devoid of animal-derived ingredients has been postulated as a possible cause of nutrient imbalances and adverse health outcomes. A small proportion of cat owners feed strictly plant-based diets to the cats in their care, yet the health and wellness of cats fed these diets has not been well documented. RESULTS: A total of 1325 questionnaires were complete enough for inclusion. The only exclusion criterion was failure to answer all questions. Most cats, 65% (667/1026), represented in the survey were fed a meat-based diet and 18.2% (187/1026) were fed a plant-based diet, with the rest fed either a combination of plant-based with meat-based (69/1026, 6.7%) or indeterminable (103/1026, 10%). Cat age ranged from 4 months to 23 years, with a median of 7 years, and was not associated with diet type. No differences in reported lifespan were detected between diet types. Fewer cats fed plant-based diets reported to have gastrointestinal and hepatic disorders. Cats fed plant-based diets were reported to have more ideal body condition scores than cats fed a meat-based diet. More owners of cats fed plant-based diets reported their cat to be in very good health. CONCLUSIONS: Cat owner perception of the health and wellness of cats does not appear to be adversely affected by being fed a plant-based diet. Contrary to expectations, owners perceived no body system or disorder to be at particular risk when feeding a plant-based diet to cats. This study collected information from cat owners and is subject to bias, as well as methodological limitations. Further research is warranted to determine if these results are replicable in a prospective investigation.

"Sewing Is Part of Our Tradition": A Case Study of Sewing as a Strategy for Arts-Based Inquiry in Health Research With Inuit Women.

In this article, we present a case study of sewing as a strategy for arts-based inquiry in health research, situated within a broader project that highlighted Nunavut Inuit women's childbirth experiences. Five focus groups were hosted as sewing sessions with pregnant women (N = 19) in Iqaluit, Nunavut (2017-2018). Women's reflections on the sessions, and the significance of sewing to Inuit, were integrated with researchers' critical reflections to examine the value of sewing as a strategy for arts-based inquiry within a focus group method: results related to the flexibility of the sessions; how collective sewing created space for voicing, sharing, and relating; sewing as a tactile and place-specific practice tied to Inuit knowledge and tradition; and lessons learned. Our results underscore the possibilities of arts-based approaches, such as sewing, to enhance data gathering within a focus group method and to contribute to more locally appropriate, place-based methods for Indigenous health research.

Ontario Veterinary College First-Year Veterinary Students' Perceptions of Companion Animal Nutrition and Their Own Nutrition: Implications for a Veterinary Nutrition Curriculum.

Extant research shows veterinarians face increasing challenges in discussing nutrition with clients despite receiving professional nutrition education in the veterinary medical curriculum. This article's aim is to elicit student veterinarians' baseline nutrition-related perceptions and nutrition information-seeking behaviors at the time of entering veterinary school. Participants were newly enrolled veterinary students at the Ontario Veterinary College (n = 120). Focus group discussions (n = 19) informed the design of an online questionnaire capturing students' demographics and perceptions of their own and their pets' nutrition. Students reported being influenced by individual factors (e.g., time), social networks (e.g., family), and surrounding environment (e.g., cost, contradictory media messages). Overall, 58% of students considered themselves knowledgeable about pet nutrition when commencing veterinary school, with 71% prioritizing their pets' diets as much as their own. Students' confidence in finding pet nutrition information was correlated with perceived accessibility (r = .76, p = .001) and perceived quantity of information available on pet nutrition (r = .83, p = .001), but not quality of information (r = .13, p = .03). In general, students relied on and trusted veterinarians for nutrition advice. However, 94% of students mistrusted pet food companies' motivations. Our data support that students entering veterinary school have their own perceptions on pet nutrition that impact nutrition education, suggesting this as an important consideration in the design and delivery of a veterinary nutrition curriculum. Veterinary medical faculty should be encouraged to discuss baseline nutrition information and address any misconceptions to prepare students for future consultations with clients.

Socio-demographic patterning of the individual-level double burden of malnutrition in a rural population in South India: a cross-sectional study.

BACKGROUND: The double burden of malnutrition is the co-occurrence of undernutrition (e.g. underweight, stunting, and micronutrient deficiencies) and over-nutrition (e.g. obesity, type 2 diabetes, and cardiovascular disease) at the population, household, or individual level. The objectives of this study were to determine the extent and determinants of individual-level co-morbid anemia and overweight and co-morbid anemia and diabetes in a population in rural Tamil Nadu, South India. METHODS: We undertook a cross-sectional study of adults (n = 753) in a rural region of Tamil Nadu, South India. A survey assessed socio-demographic factors, physical activity levels, and dietary intake. Clinical measurements included body-mass index, an oral glucose tolerance test, and blood hemoglobin assessments. Multivariable logistic regression analyses were used to determine associations between risk factors and two co-morbid double burden pairings: (1) anemia and overweight, and (2) anemia and diabetes. RESULTS: Prevalence of co-morbid anemia and overweight was 23.1% among women and 13.1% among men. Prevalence of co-morbid anemia and diabetes was 6.2% among women and 6.3% among men. The following variables were associated with co-morbid anemia and overweight in multivariable models [odds ratio (95% confidence interval)]: female sex [2.3 (1.4, 3.85)], high caste [3.2 (1.34, 7.49)], wealth index [1.1 (1.00, 1.12)], rurality (0.7 [0.56, 0.85]), tobacco consumption [0.6 (0.32, 0.96)], livestock ownership [0.5 (0.29, 0.89)], and energy-adjusted meat intake [1.8 (0.61, 0.94)]. The following variables were associated with co-morbid anemia and diabetes in multivariable models: age [1.1 (1.05, 1.11)], rurality [0.8 (0.57, 0.98)], and family history of diabetes [4.9 (1.86, 12.70). CONCLUSION: This study determined the prevalence and factors associated with individual-level double burden of malnutrition. Women in rural regions of India may be particularly vulnerable to individual-level double burden of malnutrition and should be a target population for any nutrition interventions to address simultaneous over- and undernutrition.

Ethnicity classification systems for public health surveys: experiences from HIV behavioural surveillance among men who have sex with men.

BACKGROUND: Race and ethnicity classification systems have considerable implications for public health, including the potential to reveal or mask inequities. Given increasing "super-diversity" and multiple racial/ethnic identities in many global settings, especially among younger generations, different ethnicity classification systems can underrepresent population heterogeneity and can misallocate and render invisible Indigenous people and ethnic minorities. We investigated three ethnicity classification methods and their relationship to sample size, socio-demographics and sexual health indicators. METHODS: We examined data from New Zealand's HIV behavioural surveillance programme for men who have sex with men (MSM) in 2006, 2008, 2011, and 2014. Participation was voluntary, anonymous and self-completed; recruitment was via community venues and online. Ethnicity allowed for multiple responses; we investigated three methods of dealing with these: Prioritisation, Single/Combination, and Total Response. Major ethnic groups included Asian, European, indigenous Maori, and Pacific. For each classification method, statistically significant associations with ethnicity for demographic and eight sexual health indicators were assessed using multivariable logistic regression. RESULTS: Overall, 10,525 MSM provided ethnicity data. Classification methods produced different sample sizes, and there were ethnic disparities for every sexual health indicator. In multivariable analysis, when compared with European MSM, ethnic differences were inconsistent across classification systems for two of the eight sexual health outcomes: Maori MSM were less likely to report regular partner condomless anal intercourse using Prioritisation or Total Response but not Single/Combination, and Pacific MSM were more likely to report an STI diagnosis when using Total Response but not Prioritisation or Single/Combination. CONCLUSIONS: Different classification approaches alter sample sizes and identification of health inequities. Future research should strive for equal explanatory power of Indigenous and ethnic minority groups and examine additional measures such as socially-assigned ethnicity and experiences of discrimination and racism. These findings have broad implications for surveillance and research that is used to inform public health responses.

Impact of legislation on youth indoor tanning behaviour: A systematic review.

Jurisdictions around the world have implemented indoor tanning legislations, which aim to protect all individuals, especially youth, from dangers of artificial ultraviolet radiation exposure. The objective of this study was to conduct a systematic review to synthesize the available peer-reviewed literature to determine whether indoor tanning legislation has impacted the prevalence of youth indoor tanning. Following PRISMA guidelines, six databases were searched in 2016. Reference lists from relevant articles were also searched. An updated literature search was conducted in 2018. Each article was critically appraised using a merged checklist created from two previously validated checklists. All articles meeting the inclusion criteria were retained after appraisal. Seven studies, all conducted in the U.S., met the inclusion criteria. All studies used an observational, cross-sectional design. There were small absolute decreases in youth indoor tanning prevalence after legislation vs before (n = 3, mean = 3% decrease, range = 1%-6% decrease). Prevalence of youth indoor tanning was significantly lower in states with indoor tanning legislation vs states without legislation (n = 4, mean = 5% lower, range = 1%-18% lower). Prevalence of youth indoor tanning was lower in states with longer standing indoor tanning legislation vs states with more recently implemented legislation (n = 2, mean = 9% lower, range = 2%-20% lower). Indoor tanning legislation is generally associated with lower indoor tanning prevalence among youth. The small percent differences equate to millions of youth at the population level. Longer time lapses from legislation implementation to evaluation, coupled with greater enforcement, compliance, legislative stringency, and public education may result in even more pronounced declines in youth indoor tanning prevalence.

A Process Evaluation of the Skin Cancer Prevention Act (Tanning Beds): A Survey of Ontario Public Health Units.

Evidence of the dangers of indoor tanning and its popularity, including among youth, led the Government of Ontario to pass the Skin Cancer Prevention Act (Tanning Beds) (SCPA) in 2014. This legislation includes prohibiting the sale of indoor tanning services to individuals under 18, requiring warning signs be posted, and other safety regulations. We collected information from Ontario Public Health Units to conduct a process evaluation of the SCPA to: understand legislation implementation; assess available evidence about compliance, inspection, and enforcement; and, note barriers and facilitators related to inspection and enforcement. Data was collected March-April 2018. All 36 Ontario Public Health Units were invited to participate in an online questionnaire about the SCPA. Questions covered complaints, inspection, and enforcement, and used both close- and open-ended questions. Participants from 20 Public Health Units responded to the questionnaire; a response rate of 56%. These agencies reported 485 facilities offer indoor tanning. Since 2014, there have been 242 infractions by tanning facility owner/operators related to the SCPA, with most being uncovered during non-mandatory routine inspections (n = 234, 97%), rather than mandatory complaint-based inspections (n = 8, 3%). Most infractions were related to warning signs (n = 201, 83%). No charges were issued for any infractions. Instead, providing education (n = 90, 62%) and issuing warnings (n = 33, 23%) were the most common enforcement strategies. SCPA amendments are needed, including mandatory, routinely scheduled inspections. In addition to providing education, fines may improve compliance. More resources are required for inspection and enforcement of the SCPA.

A systematic review of compliance with indoor tanning legislation.

BACKGROUND: Many jurisdictions have enacted indoor tanning legislation in response to the health risks of artificial ultraviolet (UV) radiation exposure. Key components of these legislations include banning minors' access, requiring parental consent or accompaniment, providing protective eyewear, posting health warning signs, and communicating important health risk information. However, legislation must be complied with to be impactful. Evidence around compliance with indoor tanning legislations has not been synthesized and is an important step toward determining changes in practice due to legislation. METHODS: A systematic review was conducted to obtain peer-reviewed literature about compliance with indoor tanning legislation worldwide. Six databases were searched, resulting in 12,398 citations. Sixteen studies met the inclusion criteria (peer-reviewed scientific studies, published in English, focused primarily on compliance with indoor tanning legislations, and focused on commercial indoor tanning in indoor tanning facilities). RESULTS: Compliance with most aspects of indoor tanning legislation varied widely. There was good compliance for provision of protective eyewear (84 to 100%; mean = 92%; SD = 8). Compliance with age restrictions ranged from 0 to 100% (mean = 65%; SD = 25), while compliance with posting warning labels in the required locations within a tanning facility ranged from 8 to 72% (mean = 44%; SD = 27). Variation in compliance may be due to true differences, study methodology, or temporal trends. CONCLUSIONS: Variability in compliance with indoor tanning legislation, as found in this systematic review, indicates the legislations may not be having their intended protective effects on the public's health. The reasons for such low and varied compliance with certain aspects of legislation, and high compliance with other aspects of legislation, deserve further attention in future research to inform best practices around ensuring high and consistent compliance with indoor tanning legislations worldwide.

Milestone Educational Planning Initiatives in Veterinary Medical Education: Progress and Pitfalls.

Three milestone educational planning initiatives engaged the veterinary medical profession in the United States and Canada between 1987 and 2011, namely the Pew National Veterinary Education Program, the Foresight Project, and the North American Veterinary Medical Education Consortium. In a quantitative study, we investigated the impact of these initiatives on veterinary medical education through a survey of academic leaders (deans, previous deans, and associate deans for academics from veterinary medical schools that are members of the Association of American Veterinary Medical Colleges) to assess their perspectives on the initiatives and eight recommendations that were common to all three initiatives. Two of the recommendations have in effect been implemented: enable students to elect in-depth instruction and experience within a practice theme or discipline area (tracking), and increase the number of graduating veterinarians. For three of the recommendations, awareness of the issues has increased but substantial progress has not been made: promote diversity in the veterinary profession, develop a plan to reduce student debt, and develop a North American strategic plan. Lastly, three recommendations have not been accomplished: emphasize use of information more than fact recall, share educational resources to enable a cost-effective education, and standardize core admissions requirements. The educational planning initiatives did provide collaborative opportunities to discuss and determine what needs to change within veterinary medical education. Future initiatives should explore how to avoid and overcome obstacles to successful implementation.

Determinants of internal migrant health and the healthy migrant effect in South India: a mixed methods study.

BACKGROUND: Internal labour migration is an important and necessary livelihood strategy for millions of individuals and households in India. However, the precarious position of migrant workers within Indian society may have consequences for the health of these individuals. Previous research on the connections between health and labour mobility within India have primarily focused on the negative health outcomes associated with this practice. Thus, there is a need to better identify the determinants of internal migrant health and how these determinants shape migrant health outcomes. METHODS: An exploratory mixed methods study was conducted in 26 villages in the Krishnagiri district of Tamil Nadu. Sixty-six semi-structured interviews were completed using snowball sampling, followed by 300 household surveys using multi-stage random sampling. For qualitative data, an analysis of themes and content was completed. For quantitative data, information on current participation in internal labour migration, in addition to self-reported morbidity and determinants of internal migrant health, was collected. Morbidity categories were compared between migrant and non-migrant adults (age 14-65 years) using a Fisher's exact test. RESULTS: Of the 300 households surveyed, 137 households (45.7%) had at least one current migrant member, with 205 migrant and 1012 non-migrant adults (age 14-65 years) included in this study. The health profile of migrant and non-migrants was similar in this setting, with 53 migrants (25.9%) currently suffering from a health problem compared to 273 non-migrants (27.0%). Migrant households identified both occupational and livelihood factors that contributed to changes in the health of their migrant members. These determinants of internal migrant health were corroborated and further expanded on through the semi-structured interviews. CONCLUSIONS: Internal labour migration in and of itself is not a determinant of health, as participation in labour mobility can contribute to an improvement in health, a decline in health, or no change in health among migrant workers. Targeted public health interventions should focus on addressing the determinants of internal migrant health to enhance the contributions these individuals can make to their households and villages of origin.

Perioperative analgesic use by Ontario veterinarians, 2012.

The objectives of this study were to describe the routine use of analgesics by Ontario veterinarians for common surgeries in dogs and cats, and to compare routine use of analgesics between species and surgeries, using Chi-square analyses. In total, 239 veterinarians responded to the questionnaires; a response rate of 13.1%. Fifty-two percent to 79% of veterinarians used meloxicam for both species and all surgeries. Approximately 9% of veterinarians did not use analgesics for dog ovariohysterectomy and castration, while 16% to 22% did not use analgesics for these surgeries in cats. Veterinarians used and dispensed analgesics to dogs more often than to cats (P < 0.05). Many (60% or more) veterinarians administered analgesics pre-emptively to both dogs and cats for all surgeries. Continuing education for veterinarians needs to focus on understanding of pre-emptive analgesia, preventive analgesia, and the importance of dispensing analgesic drugs after surgery for all surgeries.

Utilisation de l'analgésie péri-opératoire par les vétérinaires de l'Ontario, 2012. Les objectifs de cette étude consistaient à décrire l'utilisation routinière de l'analgésie par les vétérinaires de l'Ontario pour les chirurgies courantes chez les chiens et les chats et à comparer l'utilisation routinière de l'analgésie entre les espèces et les chirurgies en utilisant des analyses du chi-carré. Au total, 239 vétérinaires ont répondu aux questionnaires, pour un taux de réponse de 13,1 %. De cinquante-deux à 79 % des vétérinaires avaient recours au méloxicam pour les deux espèces et toutes les chirurgies. Environ 9 % des vétérinaires n'ont pas utilisé d'analgésie pour l'ovario-hystérectomie et la castration canines, tandis que de 16 % à 22 % n'ont pas eu recours à l'analgésie pour ces chirurgies chez les chats. Les vétérinaires utilisaient et distribuaient des analgésiques aux chiens plus souvent qu'aux chats (P < 0,05). Plusieurs vétérinaires (60 % ou plus) ont administré des analgésiques de manière préventive aux chiens et aux chats pour toutes les chirurgies. La formation continue des vétérinaires doit continuer de se concentrer sur la compréhension de l'analgésie préventive et sur l'importance d'administrer des analgésiques après la chirurgie pour toutes les chirurgies.(Traduit par Isabelle Vallières).

Survey of Ontario veterinarians' knowledge and attitudes on pain in dogs and cats in 2012.

Appropriate management of animal pain is a critical component of optimal animal welfare in small animal veterinary clinics. An online convenience survey was used to examine the knowledge and attitudes of practicing veterinarians in Ontario about pain in dogs (n = 100) and cats (n = 139). Veterinarian participants showed strong agreement with the need for appropriate animal pain relief, and low agreement with lack of analgesic use due to cost or side effects. All of the surgical procedures included in the survey were ranked as being moderately to highly painful, but female veterinarians had higher median rankings. Importantly, 78% of veterinarians thought their knowledge about pain recognition was sufficient. Selection bias might have resulted in overestimates of attitudes about pain in comparison to the general veterinary population. However, these results suggest that knowledge and attitudes related to pain assessment and treatment in dogs and cats have improved since the last similar survey in 2001.

Sondage sur les connaissances et les attitudes des vétérinaires de l'Ontario à propos de la douleur chez les chiens et les chats en 2012. La gestion appropriée de la douleur animale est une composante critique du bien-être animal dans les cliniques vétérinaires pour petits animaux. Un sondage de convenance en ligne a été mené pour examiner les connaissances et les attitudes des vétérinaires praticiens en Ontario à propos de la douleur chez les chiens (n = 100) et les chats (n = 139). Les participants vétérinaires se sont dits fortement en accord avec le besoin d'analgésie appropriée pour soulager la douleur des animaux et très peu en accord avec l'absence d'utilisation des analgésiques en raison du coût ou des effets secondaires. Toutes les interventions chirurgicales incluses dans le sondage étaient classées comme étant modérément à très douloureuse, mais les femmes vétérinaires présentaient des classements moyens supérieurs. Fait important, 78 % des vétérinaires croyaient que leurs connaissances à propos de la reconnaissance de la douleur étaient suffisantes. Le biais de sélection pourrait s'être traduit par des surestimations des attitudes à propos de la douleur comparativement à la population vétérinaire en général. Cependant, ces résultats suggèrent que les connaissances et les attitudes se rapportant à l'évaluation de la douleur et au traitement des chiens et des chats se sont améliorées depuis le dernier sondage semblable réalisé en 2001.(Traduit par Isabelle Vallières).

Investigation of biosecurity risks associated with the feed delivery: A pilot study.

This study explored potential biosecurity issues related to the delivery of feed to commercial farms. A pilot study was conducted to collect information about the day-to-day feed delivery, including biosecurity concerns at the level of the feed truck, the driver, and the farm. In addition, a reusable rubber boot was tested in an effort to increase the proportion of farms at which truck drivers wore clean footwear, and to explore an alternative to the standard plastic disposable boots that may be unsafe in winter conditions. Most farms did well in terms of proper dead-stock management and keeping the farm lane and feed bin areas clean. The provision of reusable rubber boots significantly increased the proportion of deliveries in which the driver wore clean footwear.

Enquête sur les risques pour la biosécurité associés à la livraison des aliments du bétail : étude pilote. Cette étude a exploré les enjeux potentiels de biosécurité reliés à la livraison d'aliments du bétail dans des fermes commerciales. Une étude pilote a été réalisée pour recueillir des renseignements concernant la livraison quotidienne, y compris les préoccupations de biosécurité au niveau du camion de livraison, du conducteur et de la ferme. De plus, une botte réutilisable en caoutchouc a été testée dans un effort visant à accroître la proportion des fermes où les conducteurs de camions portent des chaussures propres et à explorer un remplacement aux bottes jetables en plastique qui peuvent être non sécuritaires dans des conditions hivernales. La plupart des fermes effectuaient une bonne gestion des animaux morts et réalisaient un bon travail au niveau de la propreté des allées et des bacs à aliments. La fourniture de bottes réutilisables en caoutchouc a grandement accru la proportion des livraisons où le conducteur portait des bottes propres.(Traduit par Isabelle Vallières).

Spatial and temporal patterns of porcine reproductive and respiratory syndrome virus (PRRSV) genotypes in Ontario, Canada, 2004-2007.

BACKGROUND: The spread of PRRSV among pig herds has been investigated experimentally, but few observational studies have investigated this subject. Because PRRSV is endemic and live modified vaccines are used in Ontario, the spatial and temporal distributions of 6 PRRSV genotypes were investigated in the province during the period from 2004-2007. The purpose was to find evidence of spread of PRRSV genotypes and determine if spread could be attributed to supplier or ownership connections between herds. Sequence information from PRRSV ORF5 and related source-herd demographic information were obtained from diagnostic submissions to the Animal Health Laboratory, University of Guelph. RESULTS: A spatial cluster that could not be attributed to supplier or ownership connections among herds in the cluster was detected for RFLP type 1-3-4. Because of genetic dissimilarity among members of the cluster, it was considered to be a result of past spread of the RFLP type. A spatio-temporal cluster detected for RFLP type 1-18-4 was attributed to a shared gilt supplier among the herds in the cluster. Significant spatio-temporal patterns detected for RFLP type 2-5-2, which is considered to be a vaccine-type virus were most likely due to grouping of herds in an ownership that used the corresponding vaccine. Clustering within herd-ownership was a risk factor for presence of five of the six genotypes investigated in the present study. CONCLUSIONS: Although the literature indicates that PRRSV can spread via aerosol between pig herds, the present study found no strong evidence of this occurring in Ontario. The evidence pointed toward transmission of PRRSV occurring in this population by common sources of animals or similarity of herd ownership, which is a proxy measure for other connections between herds. It is also apparent that the recognition and testing of these connections between herds is a necessary part of interpreting spatio-temporal patterns of PRRSV genotypes.

Factors associated with recent HIV testing among younger gay and bisexual men in New Zealand, 2006-2011.

BACKGROUND: Understanding HIV testing behaviour is vital to developing evidence-based policy and programming that supports optimal HIV care, support, and prevention. This has not been investigated among younger gay, bisexual, and other men who have sex with men (YMSM, aged 16-29) in New Zealand. METHODS: National HIV sociobehavioural surveillance data from 2006, 2008, and 2011 was pooled to determine the prevalence of recent HIV testing (in the last 12 months) among YMSM. Factors associated with recent testing were determined using manual backward stepwise multivariate logistic regression. RESULTS: Of 3,352 eligible YMSM, 1,338 (39.9%) reported a recent HIV test. In the final adjusted model, the odds of having a recent HIV test were higher for YMSM who were older, spent more time with other gay men, reported multiple sex partners, had a regular partner for 6-12 months, reported high condom use with casual partners, and disagreed that HIV is a less serious threat nowadays and that an HIV-positive man would disclose before sex. The odds of having a recent HIV test were lower for YMSM who were bisexual, recruited online, reported Pacific Islander or Asian ethnicities, reported no regular partner or one for >3 years, were insertive-only during anal intercourse with a regular partner, and who had less HIV-related knowledge. CONCLUSION: A priority for HIV management should be connecting YMSM at risk of infection, but unlikely to test with appropriate testing services. New generations of YMSM require targeted, culturally relevant health promotion that provides accurate understandings about HIV transmission and prevention.

Flock prevalence of exposure to avian adeno-associated virus, chicken anemia virus, fowl adenovirus, and infectious bursal disease virus among Ontario broiler chicken flocks.

Samples from 231 randomly selected commercial broiler chicken flocks in Ontario were tested at slaughter for exposure to chicken anemia virus (CAV), fowl adenovirus (FAdV), and infectious bursal disease virus (IBDV). Fifteen blood samples per flock were collected and analyzed for the presence of antibodies against CAV, FAdV, and IBDV by ELISA or agar gel immunodiffusion test. Fifteen cecal tonsils and cloacal swabs per flock were analyzed for the presence of CAV, FAdV, and IBDV by PCR. The prevalence of exposure to avian adeno-associated virus (AAAV) was estimated by a PCR test on a subset of FAdV-PCR-positive samples from 178 flocks. Genotypes of FAdV and IBDV were identified on a subset of isolates (n = 353 and 45, respectively). The flock-level period prevalence of exposure to AAAV, CAV, FAdV, and IBDV during grow-out were 88.76% (95% CI: 84.08-93.45%), 77.06% (95% CI: 71.59-82.52%), 96.54% (95% CI: 94.16-98.91%), and 48.92% (95% CI: 42.42-55.41%), respectively. Results of a multivariable logistic regression model showed a significant association of exposure to FAdV with exposure to AAAV (OR = 18.57, 95% CI: 3.67-93.86, P = 0.004) but not with exposure to CAV (P = 0.7752) or exposure to IBDV (P = 0.2274). Pathogenic FAdV genotypes (FAdV-02, FAdV-08, and FAdV-11) constituted 39.38% of the isolates. The most-common IBDV genotypes identified were IBDV NC171 (60%) and IBDV 05SA8 (28.89%). This is the first large-scale study to estimate the baseline flock prevalence of exposure to AAAV, CAV, FAdV, and IBDV in commercial broiler flocks in Canada. Potentially pathogenic genotypes of FAdV and IBDV that can guide vaccine development and disease control efforts in Ontario were identified.

Investigation of incidence and risk factors for surgical glove perforation in small animal surgery.

OBJECTIVE: To identify incidence and risk factors for surgical glove perforation in small animal surgery. STUDY DESIGN: Observational cohort study. SAMPLE POPULATION: Surgical gloves (n = 2132) worn in 363 surgical procedures. METHODS: All gloves worn by operative personnel were assessed for perforation at end-procedure using a water leak test. Putative risk factors were recorded by a surgical team member. Associations between risk factors and perforation were assessed using multivariable multi-level random-effects logistic regression models to control for hierarchical data structure. RESULTS: At least 1 glove perforation occurred in 26.2% of procedures. Identified risk factors for glove perforation included increased surgical duration (surgery >1 hour OR = 1.79, 95% CI = 1.12-2.86), performing orthopedic procedures (OR = 1.88; 95% CI = 1.23-2.88), any procedure using powered instruments (OR = 1.93; 95% CI = 1.21-3.09) or surgical wire (OR = 3.02; 95% CI = 1.50-6.05), use of polyisoprene as a glove material (OR = 1.59, 95% CI = 1.05-2.39), and operative role as primary surgeon (OR = 2.01; 95% CI = 1.35-2.98). The ability of the wearer to detect perforations intraoperatively was poor, with a sensitivity of 30.8%. CONCLUSIONS: There is a high incidence of unrecognized glove perforations in small animal surgery.

Evaluating critical factors to the economic feasibility of semi-intensive pig rearing in western Kenya.

The purpose of this research is to assess how season, ADG, opportunity costs of farm-grown feeds, pig weight, and butcher price variation impact the economic potential of semi-intensive pig rearing. We developed a unique algorithm that emulates least-cost pig feeding and used it to assess the impact of the aforementioned factors on farmers' maximum revenue and profit potential when pigs are sold to local butchers in western Kenya. When considered as independent factors influencing feed costs to grow a pig to a market weight of 30 kg, variation in ADG, opportunity cost of feed, and weaning season resulted in feed cost differences of up to 982, 947, and 379 Kenyan shillings (KES), respectively. The variation in revenues attributable to butcher or butcher negotiation and seasonal variance of butcher prices for a 30 kg pig was 744 and 225 KES, respectively. Feed items most commonly chosen for least-cost feed rations were small dried fish, cooked ground maize, whole maize, millet, cassava foliage, sweet potato vines, bone meal, avocado, and mango. Smallholder farmers who can feed pigs to reach higher ADG, have lower opportunity costs of feeds and/or who effectively bargain with butchers can benefit from semi-intensive pig rearing. Farmers without access to at least some zero-cost feeds and farmers with opportunity costs of feeds exceeding 50 % of the market price will not earn positive returns from semi-intensive pig rearing.