| prevalence of antibodies to hepatitis c virus in populations at low and high risk for sexually transmitted diseases in rio de janeiro. | in order to investigate the sexual transmission of the hepatitis c virus (hcv), the prevalence of specific antibodies in populations at high and low risk for sexually transmitted diseases (stds) was evaluated. the population at low risk for stds was composed of persons who voluntarily donated blood at the hospital universitário clementino fraga filho (hucff) between july and november, 1990 (n = 2494). the population at high risk for stds was drawn from an ongoing study on the natural history of ... | 1993 | 7509022 |
| prevalence of anti-hepatitis c virus in the blood donor population of rio de janeiro. | the prevalence of hepatitis c virus (hcv) antibodies in 2,557 asymptomatic volunteer brazilian blood donors is reported. using the line immunoassay (inno-lia) as a confirmatory test on elisa anti-hcv-positive reacting sera, a prevalence rate of 2.7% for anti-hcv positivity was found. by comparison, prevalences of 1.6% for hepatitis b surface antigen, 0.9% for treponema pallidum, 0.4% for human immunodeficiency virus and 0.04% for trypanosoma cruzi were observed. only 57% of the hcv-positive dono ... | 1993 | 7692672 |
| evaluation of the determine rapid syphilis tp assay using sera. | the abbott determine rapid syphilis tp assay is a treponemal test that can be used in resource-poor settings that lack laboratory facilities. however, this test has not been extensively evaluated. we measured its sensitivity and specificity by using stored serum specimens (n = 567) from all persons who tested treponema pallidum hemagglutination assay (tpha) positive (n = 250) or tpha indeterminate (n = 17) in the year 2001 and the first 300 patients in 2001 who tested tpha negative at the evandr ... | 2004 | 14715552 |
| a syphilis co-infection study in human papilloma virus patients attended in the sexually transmitted infection ambulatory clinic, santa casa de misericórdia hospital, rio de janeiro, brazil. | despite the prevalence of syphilis worldwide, little is known about its manifestations when associated with other sexually transmitted infections (sti), specifically the human papilloma virus (hpv). current epidemiological studies show that there is a high incidence of both diseases in ambulatory clinics all over brazil. this study aims to estimate the incidence of syphilis-hpv co-infections, among patients from the sti ambulatory clinic at the santa casa da misericórdia hospital, rio de janeiro ... | 2009 | 20191198 |
| chlamydia trachomatis, neisseria gonorrhoeae and syphilis among men who have sex with men in brazil. | sexually transmitted diseases (std) are frequently asymptomatic and increase the likelihood of transmitting and acquiring hiv. in brazil, the guidelines for stds diagnosis and treatment are based on the syndromic approach. nucleic acid amplification tests (naat) has been recommended as routine stds screening in some countries, especially for men who have sex with men (msm). limited data are available about how to best define target groups for routine screening by naats within this population. we ... | 2015 | 26195002 |
| syphilis, leprosy, and human immunodeficiency virus coinfection: a challenging diagnosis. | the association between syphilis, leprosy, and human immunodeficiency virus (hiv) is not well documented, and the emergence of isolated cases raises the interest and indicates that this triple coinfection can occur. we report the case of a 42-year-old man from rio de janeiro, brazil, who presented with erythematous papules on the trunk, back, and upper and lower extremities; an erythematous plaque on the upper abdomen; and an erythematous violaceous plaque on the right thigh with altered sensiti ... | 2013 | 24087779 |