| 1. |
- Fischer, Klara, et al.
(författare)
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Where is the Participation in Participatory Epidemiology? How Engagement with Social Science could lead to Improved Understanding and Control of Peste des Petits Ruminants.
- 2016
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Ingår i: British Journal of Virology. - : ResearchersLinks Ltd. - 2055-6128. ; 3, s. 105-114
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Forskningsöversikt (refereegranskat)abstract
- Peste des Petits ruminants (PPR) is a potentially lethal, highly contagious viral disease of sheep and goats. Domestic sheep and goats are important species for the livelihoods of poor people in many developing countries. Within societies where PPR is now spreading, poverty is widespread and the disease is expected to have significant negative impacts on livelihoods. In resource-constrained marginalised societies, it is often difficult to collect disease data in conventional ways. Participatory epidemiology (PE) has been suggested as a particularly suitable research method to study epidemiology and social impacts of diseases in these contexts. However, for PE to achieve its full potential, stronger efforts to achieve true participation and to incorporate lessons about participation and power from the social sciences may be required. This review shows that social science engagement in PE to date is virtually non-existent, but that increased efforts to draw lessons from the social sciences and to increase the degree of participation in PE could increase its potential as an important tool in disease impact assessment and control. Particular attention is paid here to the potential role of PE in future research on the epidemiology and control of PPR.
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| 2. |
- Johansson Wensman, Jonas, et al.
(författare)
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Epidemiological features of an outbreak of peste des petits ruminants depicting an endemic situation
- 2016
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Ingår i: British Journal of Virology. - : ResearchersLinks Ltd. - 2055-6128. ; 3, s. 123 - 129
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Tidskriftsartikel (refereegranskat)abstract
- An outbreak of Peste des Petits ruminants (PPR), possibly caused by the introduction of new animals in the herd, was investigated in an unvaccinated mixed herd of sheep and goats. Goats in the herd showed characteristic signs of PPR including nasal and ocular discharges, high temperature, diarrhea and ulcerative lesions in the oral cavity. A total of eighteen goats from a herd of sixty, were affected and two goats succumbed within two weeks. Interestingly, the disease was exclusively observed in goats and all sheep kept in the same herd were serologically positive but did not show any clinical signs of PPR. The active PPR virus (PPRV) infection was confirmed by antigen capture ELISA and RT-PCR in both swab and body tissue samples. The molecular characterization revealed clustering of the PPRV within lineage IV with significant substitutions in the nucleoprotein (NP) gene. Genetic variations within NP gene, and possibly in other proteins which are essentially mediating protective immunity, may explain the extreme infectious nature of the virus and its host-specific pathogenesis. Moreover, understanding the nature of such circulating field viruses is essential to underpin the endemic potential of PPRV and its possible spread to the susceptible wild or domestic small ruminants.
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| 3. |
- Johansson Wensman, Jonas, et al.
(författare)
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Visualization of Borna Disease Virus Protein Interactions with Host Proteins using in situ Proximity Ligation Assay
- 2016
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Ingår i: British journal of virology. - : ResearchersLinks Ltd. - 2055-6128. ; 3:1, s. 11-23
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Tidskriftsartikel (refereegranskat)abstract
- Borna disease virus type 1 (BDV) comprises highly conserved neurotropic non-segmented negative strand RNA-virus variants causing neurological and behavioral disorders in a wide range of mammalian animals, possibly including humans. Viral persistence in the brain has been frequently observed, however, the exact mechanisms behind BDV’s ability to establish persistence despite a prominent immune response are not known. Here we have used in situ proximity ligation assay (in situ PLA), a selective tool for studying virus-host protein-protein interactions. BDV P (phosphoprotein) and N (nucleoprotein) have previously been reported to interact with several host proteins, thereby interfering with various signaling pathways. In this study, we focused on some of these interactions (BDV P-HMGB1, BDV N/P-Cdc2). First, we used rat glioma cell cultures persistently infected with a laboratory strain of BDV (C6BV) to establish the assay. Next, in situ PLA was applied to detect BDV P in brain tissues of infected animals. Finally, protein-protein interactions were visualized in both C6BV and brain tissues of experimentally as well as naturally infected animals (rat and horse, respectively). BDV proteins and their interactions with host proteins could be shown in cell cultures (HMGB1, Cdc2) and in brain tissues of rat (HMGB1, Cdc2) and horse (Cdc2 only) infected with BDV. In this study, we have for the first time directly visualized protein-protein interactions between BDV and its host, and thereby confirmed previous data to demonstrate findings in cell cultures to be applicable also in experimentally and naturally infected animals.
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| 4. |
- Järhult, Josef D
(författare)
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Tamiflu : What we know about its ups and downs
- 2015
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Ingår i: British Journal of Virology. - : ResearchersLinks Ltd. - 2055-6128. ; 2:3, s. 49-52
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Tidskriftsartikel (refereegranskat)abstract
- The pros and cons of the anti-influenza drug oseltamivir (Tamiflu®) have been intensely debated lately. This article aims to sum up what is known about positive and negative effects of the drug. The available data suggests that oseltamivir treatment of uncomplicated influenza in otherwise healthy patients shortens influenza symptoms with approximately 24 hours, and increases nausea and vomiting by 3-5%. Whether oseltamivir treatment has an effect on the frequency of influenza complications or not remains controversial. Oseltamivir is still standard as prophylaxis, treatment of severely ill patients and patients with risk factors for severe influenza disease as well as an important part of pandemic preparedness plans. Resistance development is a potential problem both in treated humans and in the environment. The use of oseltamivir for treatment of uncomplicated influenza in otherwise healthy patients should be questioned.
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