Temporal Variation in Individual Factors Associated with Hantavirus Infection in Bank Voles During an Epizootic: Implications for Puumala Virus Transmission Dynamics

2011 ◽  
Vol 11 (6) ◽  
pp. 715-721 ◽  
Author(s):  
Katrien Tersago ◽  
Ron Verhagen ◽  
Herwig Leirs
Keyword(s):  
Temporal Variation ◽  
Virus Transmission ◽  
Transmission Dynamics ◽  
Individual Factors ◽  
Hantavirus Infection ◽  
Puumala Virus ◽  
Factors Associated ◽  
Bank Voles

scholarly journals Demographic Factors Associated with Hantavirus Infection in Bank Voles (Clethrionomys glareolus)

2002 ◽  
Vol 8 (9) ◽  
pp. 924-929 ◽  
Author(s):  
Gert E. Olsson ◽  
Neil White ◽  
Clas Ahlm ◽  
Fredrik Elgh ◽  
Ann-Christin Verlemyr ◽  
...  
Keyword(s):  
Demographic Factors ◽  
Clethrionomys Glareolus ◽  
Hantavirus Infection ◽  
Factors Associated ◽  
Bank Voles

scholarly journals Longitudinal study describing time to Salmonella seroconversion in piglets on three farrow-to-finish farms

2019 ◽  
Vol 6 (1) ◽  
pp. e000287 ◽  
Author(s):  
Maria Cevallos-Almeida ◽  
Christelle Fablet ◽  
Catherine Houdayer ◽  
Virginie Dorenlor ◽  
Florent Eono ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Elisa Test ◽  
Individual Factors ◽  
Serological Response ◽  
Factors Associated ◽  
Serological Status ◽  
Pig Farms ◽  
Human Salmonellosis ◽  
On Farm ◽  
The Relationship

BackgroundPigs are frequently colonised with Salmonella enterica, and this constitutes a major risk for human salmonellosis. The infection can be assessed by the serological response of pigs to S enterica. A longitudinal study was undertaken on-farm to correctly describe this serological response and investigate factors associated with age at Salmonella seroconversion.MethodsThree pig farms and in each farm three successive batches were considered. Per batch, 40 piglets were selected at random from 10 sows (four piglets per sow). Blood was sampled from sows one week after farrowing and from piglets at weeks 1, 6, 10, 14, 18 and 22 and at the slaughterhouse. Salmonella antibodies were detected in serum using a commercial ELISA test. Factors related to farm characteristics, batch management system, porcine reproductive and respiratory syndrome infection, and sows’ Salmonella serological status were recorded to assess their effect on age at seroconversion.ResultsAt week 1 after farrowing, 96.5 per cent of the sows had antibodies against Salmonella. The serological results of piglets at weeks 1 and 6 only were positively correlated with those of the sows. The average age at Salmonella seroconversion was 137±2.2 days (confidence interval at 95 per cent). The first seroconversions occurred from weeks 10 to 14, but most of the pigs (54.6 per cent) were seropositive at the end of the fattening period, with variations between farms and batches (28.9–75.7 per cent). Herd/farm was significantly associated with age at seroconversion.ConclusionThis longitudinal study allowed the authors to follow precisely the evolution of Salmonella seroconversion from maternity to slaughterhouse and confirm the relationship between the seroconversion of sows and serology of their piglets. Moreover, factors related to farm practices and management as a whole are more influential than individual factors (at the pig level) on age at Salmonella seroconversion.

scholarly journals Environmental conditions and Puumala virus transmission in Belgium

2007 ◽  
Vol 6 (1) ◽  
pp. 55 ◽  
Author(s):  
Catherine Linard ◽  
Katrien Tersago ◽  
Herwig Leirs ◽  
Eric F Lambin
Keyword(s):  
Environmental Conditions ◽  
Virus Transmission ◽  
Puumala Virus

scholarly journals Ecologic Factors Associated with West Nile Virus Transmission, Northeastern United States

2008 ◽  
Vol 14 (10) ◽  
pp. 1539-1545 ◽  
Author(s):  
Heidi E. Brown ◽  
James E. Childs ◽  
Maria A. Diuk-Wasser ◽  
Durland Fish
Keyword(s):  
United States ◽  
West Nile Virus ◽  
Virus Transmission ◽  
Northeastern United States ◽  
West Nile ◽  
Factors Associated ◽  
West Nile Virus Transmission

Shiftwork Scheduling and Individual Factors Associated with the Incidence of Injury/illness at the Workplace

1998 ◽  
Vol 42 (23) ◽  
pp. 1621-1621
Author(s):  
Andris Freivalds ◽  
Antoinette Coker ◽  
Karen D. Cunningham ◽  
Heecheon You
Keyword(s):  
Individual Factors ◽  
Factors Associated

scholarly journals Socio-economic factors associated with a healthy diet: results from the E3N study

2017 ◽  
Vol 20 (9) ◽  
pp. 1574-1583 ◽  
Author(s):  
Aurélie Affret ◽  
Gianluca Severi ◽  
Courtney Dow ◽  
Grégoire Rey ◽  
Cyrille Delpierre ◽  
...  
Keyword(s):  
Cohort Study ◽  
Dietary Patterns ◽  
Latent Class ◽  
Contextual Factors ◽  
Healthy Diet ◽  
Individual Factors ◽  
Processed Meat ◽  
Economic Factors ◽  
Factors Associated ◽  
Socio Economic Factors

AbstractObjectiveTo identify individual and contextual socio-economic factors associated with a healthy diet.DesignDietary data from a large cohort study were used to derive two mutually exclusive dietary patterns through a latent class analysis. Associations between dietary patterns and socio-economic factors were studied with logistic regression.SettingE3N, a French prospective cohort study composed of women recruited from a national health insurance plan covering people working in the national education system.SubjectsE3N participants (n 73 031) with dietary and socio-economic data available.ResultsThe ‘Healthy’ pattern was characterized by a large consumption of fruits and vegetables and the ‘Less Healthy’ pattern by a large consumption of pizza and processed meat. When all socio-economic factors were analysed together, all of the individual factors considered were associated with a healthy diet (e.g. women with three or more children were less likely to follow a healthy diet v. women with no children, OR (95 % CI): 0·70 (0·66, 0·75)) while the contextual factors associated with a healthy diet included the size of the agglomeration of residence and the area of birth and residence (e.g. women living in the West of France were less likely to follow a healthy diet v. those living in the South of France: 0·78 (0·72, 0·83)).ConclusionsWe demonstrated that individual and contextual factors are both associated with diet. Rather than focusing only on individual factors, we recommend future studies or public health and nutritional strategies on diet to consider both types of factors.

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