Abstract:
:A cross-sectional study was carried out among 996 volunteer blood donors enrolled from May 1999 to December 1999 to determine the seroprevalence of hepatitis E virus (HEV) infection among volunteer blood donors of the Regional Blood Bank of Londrina, State of Paraná, Brazil, and to evaluate whether the rate of seroprevalence of IgG anti-HEV antibodies is associated with sociodemographic variables and with seropositivity for hepatitis A virus (HAV) infection. All participants answered the questionnaire regarding the sociodemographic characteristics. Serum samples were tested for IgG antibodies to HEV (anti-HEV) by an enzyme linked immunoassay (ELISA). All serum samples positive for anti-HEV IgG and 237 serum samples negative for anti-HEV were also assayed for IgG anti-HAV antibodies by ELISA. Anti-HEV IgG was confirmed in 23/996 samples, resulting in a seroprevalence of 2.3% for HEV infection, similar to previous results obtained in developed countries. No significant association was found between the presence of anti-HEV IgG antibodies and the sociodemographic variables including gender, age, educational level, rural or urban areas, source of water, and sewer system (p > 0.05). Also, no association with seropositivity for anti-HAV IgG antibodies was observed (p > 0.05). Although this study revealed a low seroprevalence of HEV infection in the population evaluated, the results showed that this virus is circulating among the population from Londrina, South Brazil, and point out the need of further studies to define the clinical and epidemiological importance of HEV infection and to identify additional risk factors involved in the epidemiology and pathogenesis of this infection in this population.
journal_name
Rev Inst Med Trop Sao Paulojournal_title
Revista do Instituto de Medicina Tropical de Sao Pauloauthors
Bortoliero AL,Bonametti AM,Morimoto HK,Matsuo T,Reiche EMdoi
10.1590/s0036-46652006000200006subject
Has Abstractpub_date
2006-03-01 00:00:00pages
87-92issue
2eissn
0036-4665issn
1678-9946pii
S0036-46652006000200006journal_volume
48pub_type
杂志文章abstract::The development of small ultrasonographic equipment has permitted to incorporate this technique to the methods of early detection of Human Hydatidosis. 689 echographies were carried out in this experience, and 5.51% of compatible images in the whole population, and 12.24% in groups of risk (those living together with ...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651989000400010
更新日期:1989-07-01 00:00:00
abstract::The recognition profile of the tissue cysts antigens by IgG antibodies was studied during acute and chronic human toxoplasmic infection. Thus the IgG response against Toxoplasma gondii was investigated by immunoblotting in two patients accidentally infected with the RH strain as well as in group of naturally infected ...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651998000200003
更新日期:1998-03-01 00:00:00
abstract::A proven case of human infection caused by Angiostrongylus costaricensis is reported for the first time in Venezuela. The patient was a 57-year-old female surgically operated because of signs of peritonitis with a palpable mass at the lower right quadrant of the abdomen. WBC count reported 16,600 cells/mm3, with 46% e...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章,评审
doi:10.1590/s0036-46652007000300012
更新日期:2007-05-01 00:00:00
abstract::Chlamydia trachomatis (CT) infection is often silent and can lead to long-term reproductive complications in women. In this study, we determined the prevalence of CT infection and possible associations between the presence of the infection and clinical-epidemiological variables in pregnant women attended at the Basic ...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/S1678-9946201961006
更新日期:2019-02-14 00:00:00
abstract::Hand-foot-and-mouth disease (HFMD) is becoming one of the extremely common airborne and contact transmission diseases in Guangzhou, southern China, leading public health authorities to be concerned about its increased incidence. In this study, it was used an ecological study plus the negative binomial regression to id...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652014000600014
更新日期:2014-11-01 00:00:00
abstract::We determined the relationship between plasma and red blood cell concentrations of quinine in children with uncomplicated falciparum malaria from an endemic area of Amazonian region. Quinine was determined by high performance liquid chromatography with ultraviolet detection. In the steady state the ratio between plasm...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 临床试验,杂志文章
doi:10.1590/s0036-46652009000200009
更新日期:2009-03-01 00:00:00
abstract::Identifying the true prevalence of human T-cell lymphotropic virus, mostly type 1 (HTLV-1), and the number of patients with HTLV-1-associated diseases, in addition to introducing HTLV-1/2 serology during the prenatal of pregnant women and in individuals infected with other viruses that share transmission routes with H...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s1678-9946202062027
更新日期:2020-01-01 00:00:00
abstract::A study was carried out on the occurrence of Vibrio parahaemolyticus in 1,100 diarrheal feces, routinely sent to a private clinical laboratory for microbiologic diagnosis, in Recife. V. parahaemolyticus was isolated from 14 (1.3%) fecal samples. However, if we considered only the specimens from adult patients, the iso...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651991000100012
更新日期:1991-01-01 00:00:00
abstract::In order to determine the prevalence of hepatitis C virus (HCV) infection in quilombo remnant communities in Central Brazil, 1,007 subjects were interviewed in all 12 communities existing in Mato Grosso do Sul State, Central Brazil. Blood samples were collected and sera were tested for anti-HCV by enzyme-linked immuno...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652008000600010
更新日期:2008-11-01 00:00:00
abstract::In children, vertical transmission is the main form of HIV infection. Our aim was to determine the prevalence of HIV-1 vertical transmission in mother-infant pairs in a public maternity ward in Presidente Prudente, SP. Additionally; we sought to identify characteristics associated with this form of transmission. The f...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652012000100005
更新日期:2012-01-01 00:00:00
abstract::A 37-year-old male patient, Fitzpatrick skin phototype IV, a student living in Belem, Amazon region, in 2015 had a confirmed diagnosis of acquired immunodeficiency virus (HIV) infection, but did not initiate antiretroviral treatment at his own option. Three years after the diagnosis, erythematous maculae appeared on t...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type:
doi:10.1590/S1678-9946202062002
更新日期:2020-01-17 00:00:00
abstract::Recombinant yeast-derived hepatitis B vaccine manufactured by Instituto Butantan was administered in two groups of adult volunteers (I, II) following two different schedules of immunization. In the first trial (10 &mgr;g doses and 0, 1, 3 months vaccination schedule) 106 individuals completed the full immunization pro...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651999000300011
更新日期:1999-05-01 00:00:00
abstract::The effects of eucalyptol were evaluated against the house fly, Musca domestica L., and blow fly, Chrysomya megacephala (F.). The bioassay of adults, using topical application, indicated that M. domestica males were more susceptible than females, with the LD50 being 118 and 177 microg/fly, respectively. A higher LD50 ...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652004000200008
更新日期:2004-03-01 00:00:00
abstract::Immune reconstitution inflammatory syndrome (IRIS) is an atypical and unexpected reaction related to highly active antiretroviral therapy (HAART) in human immunodeficiency virus (HIV) infected patients. IRIS includes an atypical response to an opportunistic pathogen (generally Mycobacterium tuberculosis, Mycobacterium...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652007000400015
更新日期:2007-07-01 00:00:00
abstract::American tegumentary leishmaniasis (ATL) is one of the most important but neglected infectious diseases, and can cause severe deformities. ATL incidence remains high in forest regions, such as in the Amazonas State, Brazil. However, differences within the State and over time have been observed, since infection pattern...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/S1678-9946201961022
更新日期:2019-01-01 00:00:00
abstract::Molluscs with shells very similar to Oncomelania nosophora were collected at Pedro Leopoldo and Lagoa Santa counties, MG, Brazil. They were identified, according to shell and soft part morphology, as Idiopyrgus souleyetianus. The others hidrobioids identified in Brazil are also listed. ...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章,评审
doi:10.1590/s0036-46651990000200004
更新日期:1990-03-01 00:00:00
abstract::Cranial CT scans of eleven immunocompetent children with central nervous system (CNS) infection due to Cryptococcus neoformans var. gattii were retrospectively reviewed. These children had an average age of 8.8 years and positive culture for C. n. var. gattii in cerebrospinal fluid. The most common signs and symptoms ...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652002000500010
更新日期:2002-09-01 00:00:00
abstract::The expression of iron regulated proteins (IRPs) in vitro has been obtained in the past by adding iron chelators to the culture after bacterial growth, in the presence of an organic iron source. We have investigated aspects concerning full expression of the meningococcal IRPs during normal growth, in defined condition...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651994000400002
更新日期:1994-07-01 00:00:00
abstract::Several methods have been used for the preservation of fungi, all of them presenting advantages and disadvantages. The choice of the methods depends upon the laboratory availabilities, time of preservation, genetic stability of the cultures and other factors. In this work the results obtained through the utilization o...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:
更新日期:1992-03-01 00:00:00
abstract::Thirty eight paralysis cases classified as Guillain-Barré syndrome (GBS) in Brazil were analysed. In all these cases Sabin-related poliovirus vaccine strains were isolated. In most of the cases the last vaccine dose was given months or years before the onset of GBS, suggesting a persistent infection or the transmissio...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651996000100010
更新日期:1996-01-01 00:00:00
abstract::In order to study the chemoresistance of Plasmodium falciparum to commonly used antimalarial drugs in Brazil the authors have studied ten patients with falciparum malaria, acquired in the Brazilian Amazon region. Patients were submitted to in vivo study of drug sensitivity, after chemotherapy with either 4-aminoquinol...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651997000200004
更新日期:1997-03-01 00:00:00
abstract::This work aimed to assess pathogenic potential and clonal relatedness of Aeromonas sp. and Vibrio cholerae isolates recovered during a diarrhea outbreak in Brazil. Clinical and environmental isolates were investigated for the presence of known pathogenic genes and clonal relatedness was assessed by intergenic spacer r...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652012000600001
更新日期:2012-12-01 00:00:00
abstract::Supernatant of boiled spleen saline-suspensions of Yersinia pestis experimentally infected animals were used as template for PCR amplification without DNA extraction. PCR sensitivity was enhanced by a second round of amplification (Nested). No amplification was observed from non-infected animals. ...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651996000500009
更新日期:1996-09-01 00:00:00
abstract::Zika virus (ZIKV) clinical presentation and frequency/duration of shedding need further clarification. Symptomatic ZIKV-infected individuals identified in two hospitals in Sao Paulo State, Brazil, were investigated regarding clinical characteristics, shedding in body fluids, and serodynamics. Ninety-four of 235 sympto...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章,多中心研究
doi:10.1590/S1678-9946201961019
更新日期:2019-01-01 00:00:00
abstract::The aim of this study was to describe the epidemiological profile of snakebite accidents reported by the toxicological assistance center in Fortaleza, Ceará, Brazil. Database information on snakebite accidents was analyzed regarding the period from January 2003 to December 2011. A total of 1063 cases were found. The a...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/S0036-46652013000500009
更新日期:2013-09-01 00:00:00
abstract::Chromoblastomycosis (CBM) is a chronic subcutaneous infection caused by several dematiaceous fungi. The most commonly etiological agent found in Brazil is Fonsecaea pedrosoi, which appears as thick walled, brownish colored cells with transverse and longitudinal division in the lesions, called "muriform cells". This di...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652003000600003
更新日期:2003-11-01 00:00:00
abstract::Adrenal involvement by Paracoccidioides brasiliensis was described at necropsies and in many clinical studies, but only in adults. Therefore, the aim of this study was to evaluate adrenal function in children with paracoccidioidomycosis. Twenty-three children with the systemic form of paracoccidioidomycosis were evalu...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46652006000600006
更新日期:2006-11-01 00:00:00
abstract::Human T-lymphotropic virus type 1 (HTLV-1) is found in indigenous peoples of the Pacific Islands and the Americas, whereas type 2 (HTLV-2) is widely distributed among the indigenous peoples of the Americas, where it appears to be more prevalent than HTLV-1, and in some tribes of Central Africa. HTLV-2 is considered an...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章,评审
doi:10.1590/S0036-46652015000100001
更新日期:2015-01-01 00:00:00
abstract::Three calves experimentally infected with Schistosoma mansoni, and passing viable eggs in feces, as well as 5 normal calves (coming from a non-endemic area for schistosomiasis) kept as controls, were maintained in an enclosure (850 m2 in area). In this enclosure, a tank with water received 500 laboratory reared Biomph...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651993000100002
更新日期:1993-01-01 00:00:00
abstract::Pathogenic Yersinia pestis isolates were collected during a plague outbreak at the Paraiba State in 1986. The Y. pestis isolates were investigated for the presence of virulence-associated factors and plasmid content. All strains analysed were proficient in the expression of the VW and fraction 1 antigens, pigment adso...
journal_title:Revista do Instituto de Medicina Tropical de Sao Paulo
pub_type: 杂志文章
doi:10.1590/s0036-46651989000500001
更新日期:1989-09-01 00:00:00