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Titolo:
Seroprevalence of infection caused by St. Louis encephalitis virus in the Province of Formosa.
Autore:
Spinsanti, L; Re, V; Basualdo, MDA; Diaz, G; Yacci, MR; Contigiani, M;
Indirizzi:
Natl Univ Cordoba, Fac Ciencias Med, Inst Virol Dr JM Vanella, Lab Arbovirus & Arenavirus, RA-5016 Cordoba, Argentina Natl Univ Cordoba Cordoba Argentina RA-5016 , RA-5016 Cordoba, Argentina Natl Univ Cordoba, Fac Ciencias Econ, Lab Vigilancia Epidemiol Formosa, RA-5016 Cordoba, Argentina Natl Univ Cordoba Cordoba Argentina RA-5016 , RA-5016 Cordoba, Argentina Natl Univ Cordoba, Fac Ciencias Econ, Inst Estadist & Demog, RA-5016 Cordoba, Argentina Natl Univ Cordoba Cordoba Argentina RA-5016 , RA-5016 Cordoba, Argentina
Titolo Testata:
MEDICINA-BUENOS AIRES
fascicolo: 4, volume: 60, anno: 2000,
pagine: 474 - 476
SICI:
0025-7680(2000)60:4<474:SOICBS>2.0.ZU;2-S
Fonte:
ISI
Lingua:
SPA
Soggetto:
ARBOVIRUS INVESTIGATIONS; ARGENTINA;
Keywords:
St. Louis encephalitis virus; seroprevalence;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Spinsanti, L Natl Univ Cordoba, Fac Ciencias Med, Inst Virol Dr JM Vanella, Lab Arbovirus & Arenavirus, Agencia 04,Ciudad Univ, RA-5016 Cordoba, Argentina Natl Univ Cordoba Agencia 04,Ciudad Univ Cordoba Argentina RA-5016
Citazione:
L. Spinsanti et al., "Seroprevalence of infection caused by St. Louis encephalitis virus in the Province of Formosa.", MEDICINA, 60(4), 2000, pp. 474-476

Abstract

The aim of this work was to determine the prevalence of antibodies againstSt. Louis encephalitis virus (SLE) in human sera provided by the Laboratory of Epidemiological Surveillance from Fromosa District (Province of Formosa, Argentina) in 1995 and 1997. The tests used for this study were hemagglutination inhibition (HI) and neutralization (NT). The screening performed by NT test showed prevalences of 21% (60/284) and 32% (50/157) of antibodiesin samples obtained in 1995 and 1991 respectively. In 1995, 14% of tested sera showed low titer of neutralizing antibodies (NT) (1/20 and 1/40) whereas in 1997, 19% of the sera presented titers of NT antibodies equal or greater than 1/80. It was observed that sera with low titers of NT antibodies (1/20-1/40) resulted negative in HI in the simultaneous titration of antibodies by NT and HI whereas other sera presented high titers for both tests. This relation between the low and the high titers of antibodies indicates the presence of past and recent infections and the continuous circulation of this virus. Moreover, the prevalence of NT antibodies in the surveyed population increased significantly in 2 years (p < 0.0075) confirming the endemicity of this agent in this area and showing the need to perform studies of non-confirmed viral etiology febrile diseases to determine its importance in human pathogenicity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 10:37:16