Annual Epidemiological Report for 2015: Zoonotic Influenza

This report provides 2015 data on cases of zoonotic influenza reported worldwide and by European Union/European Economic Area countries. It discusses cases of avian and swine influenza by each type of zoonotic influenza. It provides information on methods, discussion facts, and public health conclusions. (Text)
Source: Disaster Lit: Resource Guide for Disaster Medicine and Public Health - Category: International Medicine & Public Health Authors: Source Type: news

Related Links:

Avian influenza viruses (AIVs) are zoonotic pathogens that proliferate in a wide variety of host and undergo continuous genetic reassortment.1 Currently, 18 different haemagglutination (HA, H1-H18) and 11 different neuraminidase (NA, N1-N11) subtypes have been discovered, among which H1-H16 and N1-N9 were identified in avian species and had adapted to humans, equines, and swine.2 The continuous reassortment among AIV subtypes resulted in the emergence of novel AIVs and poised significant zoonotic risk to human.
Source: Journal of Infection - Category: Infectious Diseases Authors: Source Type: research
In conclusion, the reported results highlight the importance of AIV attachment to trachea in many avian species. Finally, the importance of chickens and mallards in AIVs dynamics was illustrated by the abundant AIV attachment observed. Introduction Influenza A viruses (IAVs) are pathogens of global concern in both human and veterinary medicine (Webster et al., 1992; Stöhr, 2002; Olsen et al., 2006; Wiethoelter et al., 2015). Wild birds are well-described hosts of avian influenza viruses (AIVs) and longitudinal surveillance studies have demonstrated a plethora of low pathogenic AIVs (LPAIVs) circulating in wild...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
In this study, we used a swine pH1N1 challenge virus to investigate the efficacy of whole inactivated virus vaccines homologous or heterologous to the challenge virus as well as a commercial vaccine. We found that vaccine-mediated protection was most effective when vaccine antigen and challenge virus were homologous and correlated with the specific production of neutralising antibodies and a cellular response to the challenge virus. We conclude that a conventional whole inactivated SwIV vaccine must be antigenically matched to the challenge strain to be an effective control measure. PMID: 30914224 [PubMed - as supplied by publisher]
Source: Vaccine - Category: Allergy & Immunology Authors: Tags: Vaccine Source Type: research
Source: European Union, European Centre for Disease Prevention and Control (ECDC). Published: 2019. This five-page report is based on data on zoonotic influenza for 2017 retrieved from Epidemic Intelligence on May 18, 2018. No human cases of avian influenza were reported in the European Union/European Economic Area. Sporadic cases were reported from Africa and Asia. Influenza viruses A(H1N1)v, A(H1N2)v, and A(H3N2)v of swine origin caused human cases in Switzerland and the United States. (PDF)
Source: Disaster Lit: Resource Guide for Disaster Medicine and Public Health - Category: International Medicine & Public Health Source Type: news
Source: European Union, European Centre for Disease Prevention and Control (ECDC). Published: 2019. This five-page report is based on data on zoonotic influenza for 2017 retrieved from Epidemic Intelligence on May 18, 2018. No human cases of avian influenza were reported in the European Union/European Economic Area. Sporadic cases were reported from Africa and Asia. Influenza viruses A(H1N1)v, A(H1N2)v, and A(H3N2)v of swine origin caused human cases in Switzerland and the United States. (PDF)
Source: Disaster Lit: Resource Guide for Disaster Medicine and Public Health - Category: International Medicine & Public Health Source Type: news
In this study, we have constructed computational models for host tropism prediction on human-adapted subtypes of influenza HA proteins using random forest. The feature vectors of the prediction models were generated based on seven physicochemical properties of amino acids from influenza sequences of three major hosts. Feature aggregation and associative rules were further applied to select top 20 features and extract host-associated physicochemical signatures on the combined model of nonspecific subtypes. The prediction model achieved high performance ( Accuracy=0.948 , Precision=0.954 , MCC=0.922 ). Support and confidence...
Source: Journal of Bioinformatics and Computational Biology - Category: Bioinformatics Authors: Tags: J Bioinform Comput Biol Source Type: research
AbstractPurpose of ReviewZoonotic influenza viruses are those that cross the animal-human barrier and can cause disease in humans, manifesting from minor respiratory illnesses to multiorgan dysfunction. They have also been implicated in the causation of deadly pandemics in recent history. The increasing incidence of infections caused by these viruses worldwide has necessitated focused attention to improve both diagnostic as well as treatment modalities. In this first part of a two-part review, we describe the structure of zoonotic influenza viruses, the relationship between mutation and pandemic capacity, pathogenesis of i...
Source: Current Infectious Disease Reports - Category: Infectious Diseases Source Type: research
Baik Seong Glycosylation of the hemagglutinin (HA) and neuraminidase (NA) of the influenza provides crucial means for immune evasion and viral fitness in a host population. However, the time-dependent dynamics of each glycosylation sites have not been addressed. We monitored the potential N-linked glycosylation (NLG) sites of over 10,000 HA and NA of H1N1 subtype isolated from human, avian, and swine species over the past century. The results show a shift in glycosylation sites as a hallmark of 1918 and 2009 pandemics, and also for the 1976 “abortive pandemic”. Co-segregation of particular glycosylation si...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
Abstract The development of influenza candidate vaccine viruses (CVVs) for pre-pandemic vaccine production represents a critical step in pandemic preparedness. The multiple subtypes and clades of avian or swine origin influenza viruses circulating world-wide at any one time necessitates the continuous generation of CVVs to provide an advanced starting point should a novel zoonotic virus cross the species barrier and cause a pandemic. Furthermore, the evolution and diversity of novel influenza viruses that cause zoonotic infections requires ongoing monitoring and surveillance, and, when a lack of antigenic match be...
Source: Virology - Category: Virology Authors: Tags: Virology Source Type: research
AbstractAwareness of animal influenza and its prevention and control is important for ensuring livestock health, production and welfare. In China, a country stereotyped as a major source of emerging zoonotic infectious diseases, research on the public understanding of animal influenza is limited to the Han, the main ethnic group. The present qualitative study in Southwest China investigated awareness of animal influenza among the Dai, an ethnic minority. The participants (15 men and 10 women, ages 18 –83) were smallholder farmers of pigs and poultry in rural areas of Jinghong, Xishuangbanna, Yunnan Province. A mixtur...
Source: Tropical Animal Health and Production - Category: Veterinary Research Source Type: research
More News: Bird Flu | Databases & Libraries | Epidemiology | Influenza | International Medicine & Public Health | Swine Flu | Zoonoses