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Value of serological diagnosis in congenital syphilis. Report of nine cases.

The diagnosis of congenital syphilis is difficult since it depends mainly on the results of serological tests. The results of five serological tests (three specific and two non-specific) in nine neonates with congenital syphilis are compared with those obtained in three with passively acquired antibodies. It appeared that the serological diagnosis of congenital syphilis must be based on the finding of specific neonatal antibodies in cord serum, which give positive results to the fluorescent treponemal antibody absorption test for immunoglobulin M, together with high titres of total IgM and negative results to latex tests. The non-specific tests are useful for confirming the efficacy of treatment. The mean number of cases of congenital syphilis in Seville is 0.81/1000 live births.

Female↗

Prevalence of syphilis and hepatitis B among homosexual men in two saunas in Amsterdam.

In a pilot study by field-screening in two different sauna baths, a day-sauna and a night-sauna, 318 homosexual men were investigated for syphilis and hepatitis B surface antigen (HBsAg) and its antibody (anti-HBs). Of the 134 visitors to the day-sauna 35.1% were seroreactive for syphilis, four (3%) carried HBsAg, and 95 (70.9%) anti-HBs. Of the 184 visitors to the night-sauna 33.2% were seroreactive for syphilis, 16 (8.7%), carried HBsAg, and 97 (52.7%) anti-HBs. The correlation between seroreactivity for syphilis and the presence of HBsAg amd anti-HBs was statistically significant.

Adult↗

Screening for syphilis among homosexual men in bars and saunas in Amsterdam.

Serological screening of 1627 homosexual men visiting two saunas and two bars in Amsterdam showed that 32.2% were seroreactive for syphilis. The 18-month study period ended in June 1981. Follow-up was possible in 91% (224/245) of subjects with both positive TPHA and VDRL test results; 76 cases of previously undetected syphilis were identified among 75 of the 224 men (incidence rate 4.6%). The rate of previously undetected syphilis declined appreciably during the study period. The cost of identifying one new case of syphilis was Df1577 (pounds 120 or US $ 220).

Adolescent↗

Microcapsule agglutination test for Treponema pallidum antibodies. A new serodiagnostic test for syphilis.

For the serodiagnosis of syphilis a quantitative passive agglutination (MCA-TP) test for antibodies to Treponema pallidum was performed with chemically stable microcapsules with no antigenic activity instead of with conventional sheep erythrocytes. The microcapsules were easily sensitised with the antigen of sonicated Treponema pallidum by treatment with glutaraldehyde. Compared with the Treponema pallidum haemagglutination test (TPHA) the MCA-TP test was superior for detecting cases of primary syphilis. Furthermore, the decrease in antibody titre during treatment was more evident in this test than in the FTA-ABS or the TPHA tests. The MCA-TP test performed on IgM and IgG gel-filtered fractions of sera from patients with syphilis proved that the sensitised microcapsule antigen reacted sharply with the IgM antibodies specific to syphilis.

Agglutination Tests↗

Pregnancy loss, infant death, and suffering: legacy of syphilis and gonorrhoea in Africa.

Africa in the 1980s appears to be facing problems associated with syphilis and gonorrhoea during pregnancy similar in severity and magnitude to those faced by the western world in the early 1900s. From a review of published reports, the prevalence of syphilis seroreactivity in pregnant women in many parts of Africa is at least 10%. Assuming this level of seroreactivity, we estimate that 5% to 8% of all pregnancies surviving past 12 weeks will have an adverse outcome caused by syphilis, such as spontaneous abortion, perinatal or infant death, or a living infant with syphilis. Our findings on gonorrhoea during pregnancy are almost as startling. The prevalence of gonorrhoea in pregnant women in many parts of Africa is at least 10% and it approaches 20% in some areas. The incidence of gonococcal ophthalmia neonatorum in neonates appears to be between 2% and 4%. We recommend commitment of health resources to initiatives to prevent and control sexually transmitted disease in Africa and additional research into the cost effectiveness of different prevention and control approaches.

Abortion, Spontaneous↗

Primary and secondary syphilis, 20 years' experience. 2. Clinical features.

The notes of 946 patients with primary and 854 with secondary syphilis were retrospectively reviewed. Of the 184 heterosexual men with primary syphilis, 182 (99%) had chancres affecting the penis, compared with 467 (64%) of the 728 homosexual men (p less than 0.0001). Anorectal chancres occurred in 249 (34%) of homosexual men. The commonest features of secondary syphilis included a rash, lymphadenopathy, and mucous patches of the mouth or genital area. Hepatitis, meningitis, other neurological problems, iridocyclitis, and periostitis were all exceptionally rare. The clinical features of primary and secondary syphilis do not appear to have changed in recent years.

Chancre↗

Unreliability of current screening tests for syphilis in chronic psychiatric patients.

OBJECTIVE: This study examined whether psychiatrists perform adequate diagnostic screening for syphilis in patients with chronic mental illness. METHOD: Two hundred patients with chronic mental illness underwent testing for syphilis with the commonly used RPR test and the microhemagglutination assay for Treponema pallidum (MHA-TP). Sensitivities of the two tests were compared. RESULTS: A substantial number of patients with negative results on RPR tests had reactive MHA-TPs and would have not been identified as having had syphilis with the use of RPR testing alone. CONCLUSIONS: Nontreponemal tests such as the RPR test are less likely than treponemal tests to detect syphilis appropriately in chronically mentally ill patients, and specific treponemal tests such as the MHA-TP should be considered.

Adult↗

Clinical evaluation of amoxycillin in the treatment of syphilis.

Following demonstration of in vitro activity of amoxycillin against Treponema pallidum, a clinical research group was set up to study the effects of amoxycillin against various stages of syphilitic infection in men. A total of eighty-nine cases, fifteen primary, twenty-nine secondary, thirty late and fifteen adult congenital patients have been investigated. One hundred per cent effectiveness was recorded for primary and secondary syphilis; 66.7% for late syphilis and 60% success for adult congenital syphilis. In 10.4% of cases there was a transient elevation of SGOT and SGPT although it is not certain whether this was a reaction to the drug itself. There were three incidences of drug-related rash and two other minor side-effects. Amoxycillin is thus a safe and effective oral agent for the treatment of all stages of syphilis in man.

Administration, Oral↗

Syphilis and human immunodeficiency virus seroconversion during a 6-month follow-up of female prostitutes in Mogadishu, Somalia.

A total of 155 prostitutes inhabiting 4 different districts in Mogadishu, Somalia, were enrolled in a 6 month prospective study of syphilis and HIV infection. Blood samples were taken on entry, at 3 months and at 6 months. Differences were seen between the prostitutes in the 4 districts regarding possible risk factors for the acquisition of STDs. Initially 107 (69%) were found to have syphilis serum markers and 47% had active syphilis as judged by positivity in both Treponema Pallidum Haemagglutination (TPHA) test and non-treponemal (VDRL and RPR) tests. TPHA positivity was correlated to the number of sexual partners. Sixty-nine prostitutes were followed for 6 months. Two of the 16 initially TPHA negative women seroconverted for syphilis during the follow-up. HIV antibodies were detected in one (0.6%) of the 155 prostitutes at the start of the study and one out of 68 seroconverted during the 6 months follow-up. To control the spread of HIV infection health education targeting the risk groups like prostitutes must be given a high priority.

Adolescent↗

A multi-district audit of the management of syphilis in genitourinary medicine clinics in Yorkshire.

An audit against standards and guidelines of a representative sample of syphilis cases managed in genitourinary medicine clinics in Yorkshire was carried out. Satisfactory serological endpoints could be determined for about two-thirds of treated early and less than one-third of treated late syphilis cases. HIV antibody testing was obtained for less than half of all cases. Recently available national guidelines suggest inadequacy of both the dose and duration of treatments with procaine penicillin of asymptomatic late syphilis cases where lumbar puncture was not carried out. The diagnosis and management of syphilis is complex, and this audit demonstrates the importance of the systematic approach developed by genitourinary medicine clinic and laboratory services.

Adolescent↗

Screening, diagnosis and management of early syphilis in genitourinary medicine clinics in the UK.

New diagnoses of syphilis in the UK increased eight-fold between 1997 and 2002. This study, conducted in 2002, demonstrated that 31% of clinics were not confident of their expertise to obtain an adequate specimen for dark ground microscopy (DGM), and 35% were not confident of their expertise to detect treponemes on DGM. In all, 64% of clinics had observed adherence problems in HIV-positive patients treated with parenteral regimens, as against 42% with oral regimens. Also, 51% of clinics waited more than a week for the results of initial serological tests for syphilis, and 88% of clinics waited more than a week for confirmatory test results. Other concerns include the failure to perform syphilis serology consistently whenever HIV-positive patients were at risk, and the widespread use of doxycycline as a therapy for syphilis in HIV-positive patients despite concerns that this is not known to be fully treponemicidal in cerebrospinal fluid.

Anti-Bacterial Agents↗

Syphilis in pregnancy and the neonatal period.

The recent increase in the number of cases of syphilis in the UK, including among women of reproductive age, has stimulated the need for a review of practices concerning assessment and management of syphilis in pregnancy and the neonatal period. This paper summarizes available evidence from published guidelines, primary and secondary research. Optimal management of syphilis in pregnancy and the neonatal period relies on the early diagnosis and staging of maternal disease, prompt treatment to prevent congenital syphilis, and timely assessment of newborns.

Decision Trees↗

[Seroprevalence and risk factors for syphilis in prisoners in Goiás, Brazil].

A cross-sectional survey was carried-out among 299 prisoners in the Penitentiary Center of Industrial Activity of Goiás (CEPAIGO), to determine the seroprevalence to T. pallidum and to identify risk factors associated to seropositivity. The seropositivity criterion was a positive VDRL test at any titer. A questionnaire was applied to evaluate the following risk factors: time of imprisonment, clinical evidence of sexually transmitted diseases (STD), history of syphilis or others STD, homo/bisexuality and number of sexual partners. The positive (PPV) and negative (NPV) predictive values of the history of syphilis were calculated. Seroprevalence of 18.4% was found and no difference was detected in the different age groups. The PPV of history of syphilis was 26% indicating that 74% of the individuals who have reported syphilis in the past presented a negative VDRL test. Among all the risk factors studied, homo/bisexuality was the only one with statistically significant association with seropositivity (relative risks 5.7-95% CL1.2-26, p = 0.03). The paper discusses the methodological problems related with the investigation.

Adolescent↗

[Alcoholism and syphilis: prevalence and clinical and hepatic biochemical changes].

The prevalence of syphilis in chronic alcoholics and the hepatic clinical and biochemical alterations were evaluated in patients with both entities. The prevalence of syphilis in patients with other psychiatric diagnosis was taken as control. The patients were asymptomatic or oligosymptomatic with respect to hepatic alcoholic dysfunction or to any manifestation of the three clinical stages of syphilis. Alcoholics (206 patients) and patients with other psychiatric conditions (228 patients) were submitted to clinical examination and to quantitative serology for syphilis (Wasserman and VDRL), yielding 6.3% and 3.1% of seropositivity, respectively. No statistically significant difference was observed between alcoholics of the seropositive or seronegative groups, as to the frequencies of clinical or biochemical alterations which would indicate hepatic alterations.

Adult↗

[Evaluation of the effectiveness of the congenital syphilis elimination campaigns on reducing the perinatal morbidity and mortality: Rio de Janeiro, 1999-2000].

The growing incidence of congenital syphilis in Rio de Janeiro City led the City Health Department to organize the congenital syphilis Elimination Campaigns in 1999 and 2000, in order to call attention to the matter and to qualify health care personnel in the management of the disease. The aim of this paper was to evaluate the effectiveness of the campaigns, following the pregnant women identified with syphilis through the well-established health information systems (SINASC Live births, SIM mortality and SINAN National disease surveillance data system). It became evident that a significant reduction on perinatal morbidity and mortality was achieved on the group of children born to mothers exposed to the campaigns, pointing out that the antenatal routine practice wasn't able to deal with the matter. The low number of congenital syphilis cases found on the surveillance system denotes a huge under-reporting of the disease.

Brazil↗

Race and the prevalence of syphilis seroreactivity in the United States population: a national sero-epidemiologic study.

We used the 1978 National Health and Nutrition Examination Survey to examine the prevalence of positive syphilis serologies in the US population. Analysis of risk markers--gender, age, marital status, education, income, and residence--indicates that all except gender are associated with syphilis seroreactivity, independent of race. Controlling for associated risk markers, the Black-White odds ratio of syphilis seroreactivity is 4.7 (95% CI = 2.7, 8.2). Current knowledge of racial differences in sexual and health care behavior does not explain the Black-White difference in the prevalence of syphilis seroreactivity.

Adolescent↗

Comparison of the diagnostic accuracy of a rapid immunochromatographic test and the rapid plasma reagin test for antenatal syphilis screening in Mozambique.

OBJECTIVE: Programmes to control syphilis in developing countries are hampered by a lack of laboratory services, delayed diagnosis, and doubts about current screening methods. We aimed to compare the diagnostic accuracy of an immunochromatographic strip (ICS) test and the rapid plasma reagin (RPR) test with the combined gold standard (RPR, Treponema pallidum haemagglutination assay and direct immunofluorescence stain done at a reference laboratory) for the detection of syphilis in pregnancy. METHODS: We included test results from 4789 women attending their first antenatal visit at one of six health facilities in Sofala Province, central Mozambique. We compared diagnostic accuracy (sensitivity, specificity, and positive and negative predictive values) of ICS and RPR done at the health facilities and ICS performed at the reference laboratory. We also made subgroup comparisons by human immunodeficiency virus (HIV) and malaria status. FINDINGS: For active syphilis, the sensitivity of the ICS was 95.3% at the reference laboratory, and 84.1% at the health facility. The sensitivity of the RPR at the health facility was 70.7%. Specificity and positive and negative predictive values showed a similar pattern. The ICS outperformed RPR in all comparisons (P<0.001). CONCLUSION: The diagnostic accuracy of the ICS compared favourably with that of the gold standard. The use of the ICS in Mozambique and similar settings may improve the diagnosis of syphilis in health facilities, both with and without laboratories.

Adolescent↗

Laboratory support in the management of syphilis.

Recent developments in syphilis serology are set down. The approach today is more rational as it has some basis in immunological understandings. In spite of improvements, syphilis serology continues to have limitations, and differentiating active from inactive cases remains taxing. In primary and secondary syphilis, dark-ground microscopy is still the quickest and surest way to make the diagnosis. In latent syphilis and in late and congenital cases, as well as in instances of other treponemal infections, serological evidence of disease needs to be considered along with each patient's medical, social and sexual history, when and why they may have been given antibiotic treatment, and the results of radiological studies and cerebrospinal fluid examination. For some syphilitics, the decision to treat or not to treat remains a matter of art rather than science.

Adolescent↗