CDC reports variant of swine flu not seen previously in people

A?Centers for Diseases Control and Prevention (CDC)?report released yesterday says 18 people in Michigan and Ohio fell ill after an outbreak of Influenza A(H3N2) Variant Virus that had not seen previously in people. Health officials linked the infections to swine exhibits at agricultural fairs. All 18 people have since recovered. Dr. Gregory Poland, director of [...]
Source: News from Mayo Clinic - Category: Databases & Libraries Source Type: news

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Why are some people better able to fight off the flu than others? Part of the answer, according to a new study, is related to the first flu strain we encounter in childhood.Scientists from UCLA and the University of Arizona have found that people ’s ability to fight off the flu virus is determined not only by the subtypes of flu they have had throughout their lives, but also by the sequence in which they are been infected by the viruses. Their study is published in the open-access journal PLoS Pathogens.The research offers an explanation for why some people fare much worse than others when infected with the...
Source: UCLA Newsroom: Health Sciences - Category: Universities & Medical Training Source Type: news
We read with interest the recent communication by Guo et al. concerning avian influenza virus pathogenicity.1 Swine has been considered an intermediate host for avian influenza viruses to adapt to humans. Cross-species transmissions caused by novel reassortant swine-originate influenza A virus (S-OIV) are of particular concern after the 2009 pandemic caused by pdH1N1 virus and epidemic outbreaks caused by H3N2v.2,3 The genesis of these viruses shows that reassortant is the major driving force for producing highly infectious variants.
Source: Journal of Infection - Category: Infectious Diseases Authors: Tags: Letter to the Editor Source Type: research
Mark K. Slifka1* and Ian J. Amanna2 1Division of Neuroscience, Oregon National Primate Research Center, Oregon Health &Science University, Beaverton, OR, United States2Najít Technologies, Inc., Beaverton, OR, United States Vaccines play a vital role in protecting our communities against infectious disease. Unfortunately, some vaccines provide only partial protection or in some cases vaccine-mediated immunity may wane rapidly, resulting in either increased susceptibility to that disease or a requirement for more booster vaccinations in order to maintain immunity above a protective level. The durability of a...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Jennifer M. Rudd1, Sivasami Pulavendran1, Harshini K. Ashar1, Jerry W. Ritchey1, Timothy A. Snider1, Jerry R. Malayer1, Montelongo Marie1, Vincent T. K. Chow2 and Teluguakula Narasaraju1* 1Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States2Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore Exaggerated host innate immune responses have been implicated in severe influenza pneumonia. We have previously demonstrated that excessive neutrophils recruited during in...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
This report highlights the potential of variant influenza outbreaks associated with agricultural fair settings in the United States, especially after direct or indirect swine contact.Morbidity &Mortality Weekly Report
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Infectious Diseases Journal Article Source Type: news
Abstract From 2005 to July 6, 2018, a total of 435 swine-origin influenza A H3N2 variant virus (H3N2v) human infections were reported in the USA. The largest H3N2v outbreak in the USA occurred in 2011-2012. This virus obtained the HA gene from human seasonal H3N2 influenza A viruses (seasonal H3N2) via human-to-swine transmission in the mid-1990s and was classified as Cluster IV H3N2v. For early detection of public health threats associated with Cluster IV H3N2v in distinction from seasonal H3N2, we developed highly specific and sensitive one-step real-time RT-PCR assays directly targeting the HA genes of Cluster ...
Source: Japanese Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: Jpn J Infect Dis Source Type: research
Abstract On September 17, 2017, the Maryland Department of Agriculture (MDA) was notified by fair and 4-H officials of ill swine at agricultural fair A, held September 14-17. That day, investigation of the 107 swine at fair A revealed five swine with fever and signs of upper respiratory tract illness. All five respiratory specimens collected from these swine tested positive for influenza A virus at the MDA Animal Health Laboratory, and influenza A(H3N2) virus was confirmed in all specimens by the U.S. Department of Agriculture National Veterinary Services Laboratory (NVSL). On September 18, MDA was notified by fai...
Source: MMWR Morb Mortal Wkl... - Category: Epidemiology Authors: Tags: MMWR Morb Mortal Wkly Rep Source Type: research
On September 17, 2017, the Maryland Department of Agriculture was notified by fair and 4-H officials of ill swine at an agricultural fair held September 14-17.
Source: CDC Morbidity and Mortality Weekly Report - Category: American Health Tags: MMWR Morbidity & Mortality Weekly Report Outbreaks Swine Influenza Variant Influenza Source Type: news
Publication date: 1 September 2018Source: Preventive Veterinary Medicine, Volume 157Author(s): Sébastien Grech-Angelini, Séverine Hervé, Nicolas Rose, Nicolas Barbier, François Casabianca, Oscar Maestrini, Alessandra Falchi, Gaëlle SimonAbstractCorsica is a mountainous French island in the north-western Mediterranean Sea. It is a rural area, where pig farming is a major economic activity. Although no acute respiratory outbreaks due to swine influenza A viruses (swIAVs) have ever been reported in this free-ranging pig breeding system, influenza A viruses (IAVs) could be circulating within th...
Source: Preventive Veterinary Medicine - Category: Veterinary Research Source Type: research
Summary Influenza A viruses circulate in swine and can spread rapidly among swine when housed in close proximity, such as at agricultural fairs. Youth who have close and prolonged contact with influenzaÔÇÉinfected swine at agricultural fairs may be at increased risk of acquiring influenza virus infection from swine. Animal and human health officials have issued written measures to minimize influenza transmission at agricultural exhibitions; however, there is little information on the knowledge, attitudes, and practice (KAP) of these measures among animal exhibitors. After an August 2016 outbreak of influenza A(H3N2) varian...
Source: Zoonoses and Public Health - Category: Infectious Diseases Authors: Tags: ORIGINAL ARTICLE Source Type: research
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