Sequence analysis of the 2009 pandemic influenza A H1N1 virus haemagglutinin gene from 2009-2010 Brazilian clinical samples
Mem. Inst. Oswaldo Cruz
;
106(5): 613-616, Aug. 2011. graf, tab
Article
Dans Anglais
| LILACS
| ID: lil-597722
ABSTRACT
In this paper, we analysed the haemagglutinin (HA) gene identified by polymerase chain reaction from 90 influenza A H1N1 virus strains that circulated in Brazil from April 2009-June 2010. A World Health Organization sequencing protocol allowed us to identify amino acid mutations in the HA protein at positions S220T (71 percent), D239G/N/S (20 percent), Y247H (4.5 percent), E252K (3.3 percent), M274V (2.2 percent), Q310H (26.7 percent) and E391K (12 percent). A fatal outcome was associated with the D239G mutation (p < 0.0001). Brazilian HA genetic diversity, in comparison to a reference strain from California, highlights the role of influenza virus surveillance for study of viral evolution, in addition to monitoring the spread of the virus worldwide.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Variation génétique
/
Glycoprotéine hémagglutinine du virus influenza
/
Grippe humaine
/
Sous-type H1N1 du virus de la grippe A
/
Pandémies
/
Mutation
Limites du sujet:
Humains
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
Médecine tropicale
/
Parasitologie
Année:
2011
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Instituto Adolfo Lutz/BR
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