The Swine Influenza A H1n1 Viruses
Flu Illness
SWINEFLU KILLING MACHINE JUNE 20, 2009
AAFP has adopted CDC interim guidance for physicians on use of antiviral medications during 2008-09 influenza season. agency issued recommendations because high proportion of A (H1N1) have been found to be resistant to antiviral medication oseltamivir.Emerging periodically, pandemics are both unpredictable and unavoidable. Stay up-to-date on Pandemic Alert Level! Flu : Born out of naturally occurring swine influenza viruses, the variant can transmit to people, as most people currently do not have immunity and vaccine does not exist.Performance of commercial virus H1N1 and H3N2 antibody enzyme-linked immunosorbent assay in pigs experimentally infected with European influenza viruses; J Vet Diagn Invest, January 1, 2009; 21(1): 88 - 96. [Abstract] [Full Text] [PDF];In late March and early April 2009, cases of human infection with swine A (H1N1) were reported in Mexico and then in Southern California and near San Antonio, Texas.
Since then, 40 confirmed cases have been reported in United States in California, Kansas, New York City, Ohio and Texas.H3N3 and influenza viruses were isolated from Canadian pigs in 2001 and 2002. These are phylogenetically related to waterfowl and antigenically distinct from reference viruses.H3N3 and A were isolated from Canadian pigs in 2001 and 2002. These are phylogenetically related to waterfowl and antigenically distinct from reference viruses.Strain - new strains of appear and replace older strains through antigenic drift. When a new strain of human virus emerges, antibody protection that may have developed after infection or vaccination with an older strain may not provide protection against the new strain.In European pigs, H3N2 influenza viruses possess genes encoding non-surface proteins of avian origin (Campitelli et al., 1997 ).
This phenomenon was caused by reassortment event between human-like H3N2 swine viruses and avian-like (Castrucci et al., 1993 ). These viruses,Santa Clara County Office of Education H1N1 Virus Update ; For the latest update on H1N1 Virus, visit Santa Clara County Health Department Web Site here.The virus was identified as a strain, similar to viruses that have circulated in American pigs for past ten years. However some of the viral genes are derived from Eurasian swine viruses.Three subtypes of viruses, H1N1, H1N2 and H3N2, co-evolve in pigs in Europe. These studies reveal interesting parallels between genetic and antigenic drift of viruses in pig and human populations, and provide further examples of contribution of genetic reassortment to the antigenic and STATEMENTS; A(H1N1): lessons learned and preparedness; 2 July 2009 ; WHO welcomes sanofi-aventis's donation of vaccine; 17 June 2009 ; Complete list of statements and speeches; researcher dilutes type A(H1N1)-strain virus into small tubesQuestions: If you have additional questions you can call the CDPH novel (H1N1) virus (Swine Flu) Hotline at 1-888-865-0564, from 8 a.m.
to 5 p.m. CDC Interim Guidance for People who have Close Contact with Pigs in Non-commercial Settings: Preventing Spread of Viruses,Symptoms of flu are similar to those caused by other influenza viruses. These include fever and chills, coughing, sore throat, and fatigue. Sometimes nausea, vomiting, and diarrhea can occur.
In the past, pneumonia and potentially fatal respiratory failure have Flu; (Swine (H1N1) Virus)The CDC has determined that the 2009 H1N1 flu virus contains genetic pieces from four different virus sources, which is unusual. virus consists of North American viruses, North American avian viruses, human viruses and swine found in both Asia and Europe.Tracking the progress of swine flu This map and the data behind it were compiled by Dr. Henry Niman, a biomedical researcher in Pittsburgh, Pennsylvania, using technology provided by Rhiza Labs and Google. map is compiled using data from official sources, news reports and Wikipedia | This study investigates whether antigenic evolution within viruses can compromise vaccine efficacy and, specifically, whether A/New Jersey/8/76 strain in commercial swine vaccines needs to be updated.
A Virus, Subtype H1N1 Swine Influenza spread people to pigs & humans to pig herds, outbreaks & epidemics NEWS facts information prevention products masks antivirals, vaccines for swine. Pork Exports & Economic Impact of on U.S. Pig Industry: June 2009 Infection in Pigs - History,Triple reassortant influenza have been isolated from pigs in United States since 1998. We report human case of upper respiratory illness associated with swine (H1N1) triple reassortant virus infection that occurred during 2005 following exposure to freshly killed pigs.Karasin, A.
I., Carman, S., Olsen, C. W. (2006). Identification of Human H1N2 and Human-Swine Reassortant H1N2 and Viruses among Pigs in Ontario, Canada (2003 to 2005)..
J. Clin. Microbiol. 44: 1123-1126 [Abstract] [Full Text]For use in healthy pigs 5 weeks of age or older as an aid in prevention of disease associated with influenza virus subtypes and H3N2.
vaccine has been demonstrated to reduce pneumonia and lung infection following challenge.This research study also evaluated whether pre-existing titers in pigs previously infected with endemic swine viruses circulating in U.S could protect against 2009 influenza virus.Update on School (K – 12) and Childcare Facilities: Interim CDC Guidance in Response to Human Infections with the Novel (H1N1) Virus Analysis of Novel (H1N1) and Implications for School Dismissal Policy The Common Sense (Swine) Flu Checklist Information on the Novel H1N1 Influenza Virus for Primary Care Practitioners [PDF] English May 2 Influenza Update [PDF] English; French antigenic hybrids - refers specifically to HA/NA hybrids in which genes for the coding of these 2 surface proteins are derived from different as the result of genetic reassortment. H - high yield HA mutants specifically of contemporary H1N1 influenza viruses related to single base changes in HA gene.The IDEXX Swine virus H1N1 and H3N2 enzyme-linked immunosorbent assays (ELISAs) are used worldwide, but their capacity to detect antibodies to European viruses (SIVs) has not been documented.Swine (also called H1N1 flu, swine flu, hog flu, and pig flu) is an infection by any one of several types of virus.Find all essential information about Pandemic. Everything what you should know about flu pandemic. is respiratory disease of pigs caused by type A influenza virus.
It regularly causes outbreaks of among pigs. flu viruses do not normally infect humans,Antigenic and genetic diversity among swine H1N1 and H1N2 viruses in Europe. Human infection by swine (H1N1) virus in Switzerland.Human infection by A (H1N1) virus in Switzerland.BioInfoBank Library :: Mutation :: Update: drug susceptibility of swine-origin (H1N1) viruses, April 2009. Regulatory sequences involved in the promotion and termination of RNA transcription.
Basic local alignment search tool. Update: drug susceptibility of swine-origin influenza A (H1N1) viruses, April 2009.BioInfoBank Library :: Inhibitory Concentration 50 :: Update: drug susceptibility of swine-origin (H1N1) viruses, April 2009. Molecular recognition of fatty acids by peroxisome proliferator-activated receptors. Update: drug susceptibility of swine-origin A (H1N1) viruses, April 2009.
H1N1 Flu Questions and Answers: Novel Vaccine (updated 7/28/09) CDC H1N1 web site The information contained in this document is intended to complement existing guidance for healthcare personnel, “Interim Guidance for Infection Control for Care of Patients with Confirmed or Suspected Swine A (H1N1) Virus Infection in a Healthcare Setting”.Performance of commercial influenza virus and H3N2 antibody enzyme-linked immunosorbent assay in pigs experimentally infected with European influenza viruses; J Vet Diagn Invest, January 1, 2009; 21(1): 88 - 96. [Abstract] [Full Text] [PDF];Partial sequences of five genes have been submitted to the GenBank database (accession numbers from FJ713784 to FJ713788)PPB. Avian-like viruses are enzootic in swine population of Western Europe.What is flu?; (H1N1) virus that has infected humans in the U.S. and Mexico is a novel virus that has not previously been identified in North America.
Safeguard Biosystems’ Test For A Enables Mass Surveillance ;Info on (Swine Flu) I refers to caused by any strain of the virus endemic in pigs (swine). Strains endemic in are called virus (SIV). viruses may circulate among throughout year, but most outbreaks occur during late fall and word "flu" is used to describe upper respiratory infections caused by viruses. Symptoms include fever, FLU; For information on flu (also called flu), please read March of Dimes article or visit the Web site of the U.S.
Centers for Disease Control and Prevention (CDC).Since the first reports on 21st April of human infection by novel influenza (H1N1) virus, genetically related to viruses, infection has spread across the world. The pandemic virus is related to A (H1N1) recently circulating in pigs in North America and Europe/Asia.It is normal for viruses to go through genetic changes," adding that overseas health authorities, ScienceInsider reported that six-month-old Mexican girl is now thought to be first person to have contracted influenza A(H1N1). YahooNews reports that number of flu cases in Australia has reached 10,387,UPDATE General Business and Workplace Guidance for Prevention of Novel (H1N1) Flu in Workers Swine Flu H1N1 influenza A: News and Facts Flu H1N1 Symptoms Studies in human sera from rural China show antibodies to a variety of non-human virus subtypes. In addition, prevalence of antibodies to avian-like (H1N1) viruses seem to increase with higher exposure to pigs.Symposium on Animal Viruses, Gent, Belgium 16th-18th May 1999 Studies in human sera from rural China show antibodies to variety of non-human virus subtypes.
In addition, prevalence of antibodies to avian-like swine (H1N1) viruses seem to increase with higher exposure to pigs.Travel Health Notice: Novel (H1N1) 09 For latest information on A (H1N1) situation, including travel advice, see our Travel Health Notice: Novel A (H1N1) 09.Technical Abstract: aims of this study were to establish a pig model for 1930 H1N1 virus and its rescue by reverse genetics. A/swine/IA/15/30 (ATCC VR333) is first influenza virus isolated from Since pigs are susceptible to swine, avian and human viruses, H1N1 (swine flu) is respiratory disease of pigs caused by type A viruses. Outbreaks of flu happen regularly in pigs. People do not normally get flu, but human infections can and do happen.Technical Abstract: aims of this study were to establish pig model for 1930 H1N1 swine virus and its rescue by reverse genetics.
Influenza A/swine/IA/15/30 H1N1 (ATCC VR333) is first virus isolated from Since pigs are susceptible to swine, avian and human viruses,Human influenza; H1N1 flu viruses are antigenically different from human viruses. Human-to-human transmission of flu is thought to occur in same way as seasonal flu is spread among people, mainly through coughing or sneezing.Final confirmation of zoonotic nature of viruses from pigs came in 1976, when following an epizootic in pigs, viruses isolated from pigs and a human contact were shown to be both antigenically and genetically identical swine H1N1 (Hinshaw et al 1978,Swine are susceptible to the same virus subtypes as humans – H1N1, H3N2 and H1N2 - and histories of in pigs and people are closely linked. Many swine viruses are result of reassortment and their genes are composed of human and avian and/or virus genes. Date of submission:Distinct viral lineages are found in swine populations around world.
In United States, has historically been an endemic disease caused by classical H1N1 viruses. This changed during winter months of 1998 when H3N2 viruses were isolated from pigs with severe cases of respiratory disease.Distinct viral lineages are found in populations around world. In United States, swine influenza has historically been an endemic disease caused by classical swine H1N1 viruses. This changed during winter months of 1998 when H3N2 viruses were isolated from pigs with severe cases of respiratory disease.Distinct viral lineages are found in populations around world.
In United States, has historically been an endemic disease caused by classical viruses. This changed during the winter months of 1998 when H3N2 were isolated from pigs with severe cases of respiratory disease.Since first reports on 21st April of human infection by novel influenza A (H1N1) virus, genetically related to swine viruses, infection has spread across world. The pandemic H1N1 virus is related to influenza (H1N1) recently circulating in pigs in North America and Europe/Asia.Since first reports on 21st April of human infection by novel influenza A (H1N1) virus, genetically related to swine viruses, infection has spread across world. pandemic virus is related to swine (H1N1) recently circulating in pigs in North America and Europe/Asia.A preliminary analysis showed that both patients had been infected with swine (H1N1) viruses, which are different from strain identified in 1976 outbreak. source of exposure has not yet been identified and individuals who came in contact with two children were being interviewed and tested.
Swine influenza; Swine is respiratory disease of pigs caused by virus. H1N1 flu virus; flu viruses do not normally infect humans. From time to time, human infections do occur, resulting in flu virus. flu virus is respiratory illness that causes symptoms similar to those of European porcine H1N2 influenza arose after multiple reassortment steps involving a porcine virus with avian-influenza-like internal segments and human H1N1 and H3N2 viruses in 1994.
In Germany, H1N2 first appeared in 2000. Two German H1N2 influenza virus strains isolated from (H1N1) that have been detected in humans in United States and Mexico are resistant to amantadine and rimantadine so these drugs will not work against these influenza viruses.In late March and early April 2009, cases of human infection with influenza (H1N1) viruses were first reported in Southern California and near San Antonio, Texas. Other U.S. states have reported cases of flu infection in humans and cases have been reported internationally as well.Historical Perspective -- Emergence of (H1N1) Viruses; Zimmer and Burke; NEJM 2009;361:279-285.
FULL TEXT Antigenic and genetic diversity among swine A H1N1 and H1N2 viruses in Europe; Marozin et al. J. Gen. Virol.
2002;83:735-745. ABSTRACT | FULL TEXTThe researchers said that this type of contains genetic material found in avian, human and swine found locally and in Europe and Asia. virus is resistant to Five additional cases of unique type of (H1N1) were identified late yesterday and early today at CDC, cause global pandemics, influenza;; On April 26th, 2009, the US Department of Health and Human Services issued nationwide public health emergency regarding human cases of A (H1N1) virus (swine flu).1 In preceding weeks, an outbreak of virus was reported in Mexico.Systemic symptoms result from inflammatory mediators, similar to other viruses. On April 26, 2009, US Department of Health and Human Services issued a nationwide public health emergency regarding swine (H1N1) virus infections in humans.1 Over preceding several weeks, an outbreak of a new strain Can domestic cats be infected with avian viruses? Flu - Read about flu (swine H1N1 virus infection) symptoms such as fever, cough, sore throat, nasal congestion, headache, chills, fever, and diarrhea.Association Bulletin #09-02: AABB Issues Association Bulletin on H1N1 Virus (April 27, AABB Membership required to access) World Health Organization (WHO) EPR: • resistant to oseltamivir (Tamiflu) identified (July 8); • Pandemic (H1N1) 2009 (Phase 6 declared June 11);In late March and early April 2009, cases of human infection with (H1N1) viruses were first reported in Southern California and near San Antonio, Texas.
Other U.S. states have reported cases of flu infection in humans and cases have been reported internationally as well.Swine (swine flu) is a respiratory disease of pigs caused by type (H1N1) that causes regular outbreaks in pigs. This virus can spread from human to human through coughing or sneezing.CDC, in collaboration with public health officials in California and Texas, is investigating cases of febrile respiratory illness caused by influenza (H1N1) viruses. As of 11 AM (EDT) April 25, 2009, 8 laboratory confirmed cases of Swine Influenza infection have been confirmed in the United States.The (H1N1) viruses that have been detected in humans in United States and Mexico are resistant to amantadine and rimantadine so these drugs will not work against these influenza viruses.Map: Weekly Influenza Activity Estimates Reported by State and Territorial Epidemiologists ; (Activity levels indicate geographic spread of both seasonal and novel A [H1N1] viruses) ; (Posted August 7, 2009, 4:00 PM ET, for Week Ending August 1, 2009) For additional information on antiviral treatment visit: Interim Guidance on Antiviral Recommendations for Patients with Confirmed or Suspected (H1N1) Virus Infection and Close Contacts Laboratory testing has found H1N1 (swine flu) virus susceptible to the prescription antiviral drugs oseltamivir and zanamivir, and the CDC has issued interim guidance for use of these drugs to treat and prevent infection with viruses.22,23 As part of its preparation for emergency,H1N1 viruses.; majority of A viruses circulating in France and Italy prior to 2000 were closely related antigenically to earlier avian-like H1N1 isolates such as Sw/Finistere/2899/82 (Table 2 ), even though their HA and NA sequences had drifted significantly (see below, Fig.Performance of commercial virus H1N1 and H3N2 antibody enzyme-linked immunosorbent assay in pigs experimentally infected with European viruses; J Vet Diagn Invest, January 1, 2009; 21(1): 88 - 96.
[Abstract] [Full Text] [PDF];Swine (SI) is an acute, infectious and highly contagious febrile respiratory disease of swine caused by type viruses. disease causes high morbidity and low mortality, and is characterized by sudden onset of View the H3N2 and H1N1 viruses information sheet. (216 KB)BioInfoBank Library :: Antigenic and genetic characterization of (H1N1) isolated from pneumonia patients in Netherlands. B virus in seals.
Antigenic drift in influenza A virus (H3N2) nucleoprotein and escape from recognition by cytotoxic T lymphocytes. National Center,Files in this Data Supplement: Supplemental file 1 - Four phylogenetic trees (HA, NA, M, and PB1 genes). MS Word document, 141K. Supplemental file 2 - Legend to figure shown in supplemental file 1.
MS Word document, 24K.In the United States, these viruses underwent further reassortment with classical H1N1 viruses to create reassortant H1N2 (In United States, these underwent further reassortment with classical H1N1 swine viruses to create reassortant H1N2 (5, 6, 17, 19) and reassortant H1N1 (30, 32; R. J. Webby, K. D.
Rossow, S. M. Goyal, S. L.
Krauss, and R. G. Webster, Sci.The new avianlike viruses in Europe may provide model for evolution of newly introduced avian viruses into the host reservoir. Forsberg, R., Christiansen, F.
B. (2003). A Codon-Based Model of Host-Specific Selection in Parasites, with an Application to the Influenza Virus. Mol Biol Evol 20:The Swine A/H1N1 characterized in this outbreak have not been previously detected in pigs or humans.
so far characterized have been sensitive to oseltamivir, but resistant to both amantadine and rimantadine. Browse > Home / Influenza, Medicine, Flu H1N1 Update for May 7, 2009 Public buildings in Mexico have been closed, and events cancelled, while nationwide vaccination program has been launched. “The A/H1N1 characterized in this outbreak have not been previously detected in pigs or humans,” statement said.Influenza Website of Centers for Disease Control and Prevention (CDC) Additional Considerations to Interim Recommendations for the Use of Antiviral Medications in Setting of Oseltamivir Resistance among Circulating A (H1N1) Viruses, 2008-09 Season Swine Flu Info Serological profiles after consecutive experimental infections of pigs with European H1N1, H3N2, and H1N2 viruses. ReviewRecent zoonoses caused by A viruses.The classic form of acute influenza presents in the majority of pigs as high fever, lethargy, feed refusal, and characteristic, barking cough.
Signs can vary by production system and can persist in presence of other or bacteria. is an acute infectious respiratory disease of caused by type A viruses. The disease is characterized by sudden onset, coughing, dyspnea, HerdChek H3N2 and H1N1 Viruses; Information Sheet (216 KB); xChek* User-Defined Assays for test kits . .
