Reports Estimation of polio infection prevalence from environmental surveillance data

A major obstacle to eradicating polio is that poliovirus from endemic countries can be reintroduced to polio-free countries. Environmental surveillance (ES) can detect poliovirus from sewage or wastewaters samples, even in the absence of patients with paralysis. ES is underused, in part because its sensitivity is unknown. We used two unique data sets collected during a natural experiment provided by the 2013 polio outbreak in Israel: ES data from different locations and records of supplemental immunization with the live vaccine. Data from the intersecting population between the two data sets (covering more than 63,000 people) yielded a dose-dependent relationship between the number of poliovirus shedders and the amount of poliovirus in sewage. Using a mixed-effects linear regression analysis of these data, we developed several quantitative tools, such as (i) ascertainment of the number of infected individuals from ES data for application during future epidemics elsewhere, (ii) evaluation of the sensitivity of ES, and (iii) determination of the confidence level of the termination of poliovirus circulation after an outbreak. These results will be valuable in monitoring future outbreaks with ES, and this approach could be used to certify poliovirus elimination or to validate the need for more containment efforts.
Source: Science Translational Medicine - Category: Biomedical Science Authors: Tags: Reports Source Type: research

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Publication date: Available online 10 December 2019Source: Parasitology InternationalAuthor(s): L. Buffoni, M.M. Piva, P. Baska, K. Januszkiewicz, L.J. Norbury, K.C. Prior, D. Dezen, A.S. Silva, H. Wedrychowiczhz, R.E. MendesAbstractThe aim of this study was to assess the immune response and the protective efficacy elicited by the vaccination with the recombinant Fasciola hepatica myosin regulatory light chain (FhrMRLC) in Adjuplex® adjuvant against the infection with F. hepatica in rats. Four groups of 15 animals each were used for the study, one group was immunized with the recombinant F. hepatica MRLC in Adjuplex&re...
Source: Parasitology International - Category: Parasitology Source Type: research
In this study, we generated two recombinant RABVs, rERAG333E/NiVG and rERAG333E/NiVF, expressing the NiV Malaysian strain attachment glycoprotein (NiV-G) or fusion glycoprotein (NiV-F) gene based on the rERAG333E vector platform. Both rERAG333E/NiVG and rERAG333E/NiVF displayed growth properties similar to those of rERAG333E and caused marked syncytia formation after co-infection in BSR cell culture. Adult and suckling mice intracerebrally inoculated with the recombinant RABVs showed NiV-G and NiV-F expression did not increase the virulence of rERAG333E. Oral vaccination with rERAG333E/NiVG either singularly or combined wi...
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
Conclusions: A significant increase (P = .02) in Lyme arthritis cases was observed at Oishei Children's Hospital of Buffalo. Lyme arthritis may clinically present similarly to other forms of arthritis, such as oligoarticular juvenile idiopathic arthritis, so health care providers should be aware of distinguishing clinical features, which include rapid onset of swelling and patient age. Because the geographic area of endemic Lyme disease is expanding, all health care providers need to be aware of Lyme arthritis as a possible diagnosis. PMID: 31819695 [PubMed]
Source: Clinical Medicine Insights: Arthritis and Musculoskeletal Disorders - Category: Orthopaedics Tags: Clin Med Insights Arthritis Musculoskelet Disord Source Type: research
Conclusion: Vulnerable populations were found to be less knowledgeable on risk factors and they had poor practice. Education had significant impact on knowledge and attitude of urban population; however, their practice did not improve with education. PMID: 31815581 [PubMed - as supplied by publisher]
Source: Ocular Immunology and Inflammation - Category: Allergy & Immunology Tags: Ocul Immunol Inflamm Source Type: research
Applied Physiology, Nutrition, and Metabolism, e-First Articles. We are currently facing an “obesity epidemic” worldwide. Promoting inefficient metabolism in muscle represents a potential treatment for obesity and its complications. Sarco(endo)plasmic reticulum (SR) Ca2+-ATPase (SERCA) pumps in muscle are responsible for maintaining low cytosolic Ca2+ concentration through the ATP-depe ndent pumping of Ca2+ from the cytosol into the SR lumen. SERCA activity has the potential to be a critical regulator of body mass and adiposity given that it is estimated to contribute upwards of 20% of daily energy expenditure....
Source: Applied Physiology, Nutrition, and Metabolism - Category: Physiology Authors: Source Type: research
Publication date: Available online 11 December 2019Source: Fish &Shellfish ImmunologyAuthor(s): Saekil Yun, Seung-Jun Lee, Sib Sankar Giri, Hyoun Joong Kim, Sang Geun Kim, Sang Wha Kim, Se Jin Han, Jun Kwon, Woo Taek Oh, Se Chang ParkAbstractThe aim of this study was to develop and evaluate a novel route of administration for vaccinating fish against Aeromonas hydrophila infection using a dissolving microneedles (MNs) patch. The A. hydrophila JUNAH strain was inactivated with formalin and used as a vaccine antigen. It was mixed with dissolvable carboxymethyl cellulose (CMC) as the matrix material to produce the MNs pat...
Source: Fish and Shellfish Immunology - Category: Biology Source Type: research
Publication date: Available online 11 December 2019Source: EpidemicsAuthor(s): Theresa Stocks, Leah J. Martin, Sharon Kühlmann-Berenzon, Tom BrittonAbstractTo reach the WHO goal of hepatitis C elimination, it is essential to identify the number of people unaware of their hepatitis C virus (HCV) infection and to investigate the effect of interventions on the disease transmission dynamics. In many high-income countries, one of the primary routes of HCV transmission is via contaminated needles shared by people who inject drugs (PWIDs). However, substantial underreporting combined with high uncertainty regarding the size ...
Source: Epidemics - Category: Epidemiology Source Type: research
Introduction Lassa fever (LF) is a severe acute viral hemorrhagic illness caused by a virus belonging to the family Arenaviridae.1,2 The disease was first discovered in Sierra Leone in the 1950s, but the aetiological agent was first isolated after an outbreak of the disease in a village called Lassa in Borno State, Nigeria claiming the lives of two foreign missionary nurses in 1969.3 The virus exhibits persistent, asymptomatic infection, with profuse urinary virus excretion in Mastomys natalensis rodents, which serve as the natural reservoir.1,2 The virus is shed in their excreta (urine and faeces) of the rodent which can...
Source: PLOS Currents Outbreaks - Category: Epidemiology Authors: Source Type: research
VIRO-TypeNed is a collaborative molecular surveillance platform facilitated through a web-based database. Genetic data in combination with epidemiological, clinical and patient data are shared between clinical and public health laboratories, as part of the surveillance underpinning poliovirus eradication. We analysed the combination of data submitted from 2010 to 2014 to understand circulation patterns of non-polio enteroviruses (NPEV) of public health relevance. Two epidemiological patterns were observed based on VIRO-TypeNed data and classical surveillance data dating back to 1996: (i) endemic cyclic, characterised by pr...
Source: Eurosurveillance - Category: Infectious Diseases Source Type: research
CONCLUSIONS: Cuba controlled polio with effective vaccination strategies and appropriate epidemiological measures, in the context of social, financial and political support. KEYWORDS History, poliomyelitis, epidemiology, disease control, vaccination, Sabin vaccine, Cuba. PMID: 23686253 [PubMed - indexed for MEDLINE]
Source: MEDICC Review - Category: Global & Universal Tags: MEDICC Rev Source Type: research
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