| the aetiology of maculopapular rash diseases in niterói, state of rio de janeiro, brazil: implications for measles surveillance. | a study investigating the causes of rash diseases using systematic laboratory testing was conducted in niterói, rio de janeiro, between january 1994 to april 1998. sera from 327 patients were tested for evidence of anti-rubella virus, measles virus, human parvovirus b19 and dengue fever virus specific immunoglobulin igm and anti-human herpes virus type 6 (hhv-6) igg antibodies. a laboratory confirmed diagnosis was achieved in 71.3% of the cases investigated: dengue fever (33.0%), rubella (20.2%) ... | 2001 | 11811885 |
| viremic blood donor found by a rapid screening method in a season of high human parvovirus b19 activity in niterói, rio de janeiro, brazil. | erythrovirus b19 infection is usually benign but may have serious consequences in patients with hemolytic anemia (transient aplastic crisis), immunodeficiency (in whom persistent infection can lead to chronic bone marrow failure with anemia), or who are in the first or second trimester of gestation (spontaneous abortion, hydrops fetalis, and fetal death). being non-enveloped, b19 resists most inactivation methods and can be transmitted by transfusion. b19 is difficult to cultivate and native vir ... | 2004 | 15057355 |
| [anti-parvovirus b19 igg antibody prevalence in pregnant women during antenatal follow-up and cases of non-immune hydropsis fetalis due to parvovirus b19, in the city of rio de janeiro]. | with the aim of measuring the prevalence of anti-parvovirus b19 igg antibodies during pregnancy up to 24 weeks of gestation and detecting cases of nonimmune hydrops fetalis, 249 sera from pregnant women attending a reference hospital in rio de janeiro city, from june 2003 to november 2004 were collected. they were followed-up until the end of pregnancy, with 17 cases of fetal hydrops detected. four cases were caused by parvovirus b19 and two of them occurred in pregnant women living in the weste ... | 2006 | 17160325 |
| role of human herpesvirus 6 infection in young brazilian children with rash illnesses. | human herpesvirus type 6 (hhv-6) has been shown to infect almost all children by 4 years of age. primary infection causes an undifferentiated febrile illness, with approximately 30% of children exhibiting the classic clinical manifestations of exanthem subitum. even with typical clinical presentation, exanthem subitum is frequently misdiagnosed as measles or rubella. our aim was to describe the frequency and clinical manifestations of hhv-6 infection in children less than 4 years of age enrolled ... | 2008 | 18449066 |
| the accuracy of anti-human herpesvirus 6 igm detection in children with recent primary infection. | human herpesvirus 6 (hhv-6) has been shown to infect almost all children by 4 years of age. even with a typical clinical presentation, hhv-6 infection is misdiagnosed frequently as measles or rubella. the aim of this study was to assess the accuracy of the igm test for detection of recent primary hhv-6 infection. the study was conducted between january, 1998 and december, 2006 at primary health care units in niterói, rio de janeiro, brazil. sera from 185 children, in whom measles, rubella, dengu ... | 2008 | 18703091 |