Influenza porcin

Le grippe porcin o influenza porcin es un maladia infective causate per le virus pertinente al familia orthomyxoviridae e que affecta fundamentalmente a populationes porcin. Illo es cognoscite como virus del influenza porcin o SIV, pro le acronymos in anglese de Swine Influenza Virus, ben que iste distinction non es basate sur le phylogenia. Hodie, le ceppos de SIV es classificate como parte del genere Influenzavirus C o alicun del subtypos del genere Influenzavirus A. Veterinary Sciences Tomorrow article Swine influenza: a zoonosis by Paul Heinen dated 15 September 2003 says "Influenza B and C viruses are almost exclusively isolated from man, although influenza C virus has also been isolated from pigs and influenza B has recently been isolated from seals."

Subtypos
Le subtypos del virus Influenza A plus communmente trovate como le causa de infectiones de SIV es H1N1, H1N2, H3N1 e H3N2,http://www.vetmed.iastate.edu/departments/vdpam/swine/diseases/chest/swineinfluenza/ Swine Diseases (Chest) - Swine Influenza], Iowa State University College of Veterinary Medicineeurekalert  Tips from the Journals of the American Society for Microbiology - Novel H3N1 Swine Influenza Virus Identified in Pigs in Korea ben que le H2N3 ha essite recentemente trovate, que etiam produce iste typo de pathologia. PNAS Published online before print December 18, 2007, doi: 10.1073/pnas.0710286104 PNAS December 26, 2007 vol. 104 no. 52 20949-20954

In le mundo, il ha 3 subtypos de virus de influenza A (H1N1, H1N2 e H3N2), cognoscite per infectar porcos. In le Statos Unite, le subtypo classic H1N1 esseva quasi exclusivemente prevalente inter le populationes porcin ante 1998. Comocunque, ab augusto 1998 le subtypos H3N2 esseva etiam isolate. Il es trovate que le major parte del virus H3N2 ha material recombinate, con lineages de genes de virus que attacca esseres human (HA, NA, and PB1), porcos (NS, NP, and M) e aves (PB2 and PA).

 Symptomatologia 
 Symptomatologia in le porco 
250px|thumb|left|Symptomatologia in le porco.
1. systemic (febre, pedita de peso, crescimento povre)
2. nasophrarynx (sternutamento , mucos in naso e oculo)
3. psychologic (lethargia , inappetentia)
4. respiratori (tusse , gutture dolorose)
5. intestinal (diarrhea)
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Le animales passa per un quadro respiratori characterisate per tusse e frequentia respiratori elevate, sternutamentos, temperatura basal elevate, discargas nasal, lethargia, difficultates respiratori (frequentia de respiration elevate e respiration buccal) e appetito reducite. Le excretion nasal del virus pote apparer al circa 24 horas del infection. Le tassas de morbiditate es alte e pote attinger al 100 per cento, ben que le mortalitate es bastante basse e le majoritate del porcos se recupera post 5 o 7 dies post le apparition del symptomas. What is swine flu? - SEMP INC (Biot Report #162: January 09, 2005) Le transmission del maladia es realisate per le contacto con le secretiones que contine le virus (trans le tusse o le sternutamento, assi como per le discargas nasal).

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1: systemic (febre)
2: psychologic (lethargia , inappetentia)
3: nasopharynx (naso mucose , gutture dolorose)
4: respiratori (tusse)
5: gastric (nausea , vomitos)
6: intestinal (diarrhea)
 Referentias 

Categoria:Viruses
Categoria:Maladia animal