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PubMed1994

[Sexually transmitted disease infection in HIV carriers].

Heterosexual transmission of the human immunodeficiency virus (HIV) appears to occur readily all over the world. Recent reports have suggested an association between HIV and sexually transmitted disease (STD). We conducted a case study among foreign female prostitutes who were seropositive to HIV to determine the prevalence of STD. In this study, we checked the prevalence of STD infection in 19 HIV seropositive female prostitutes. Overall, 84 percent were seropositive for Chlamydia trachomatis, 37% for HBs, 32% for Treponema pallidum (Tp) and 6% for hepatitis C virus (HCV). The high frequency of a history of STD may be associated with an increased risk of HIV infection acquired through heterosexual contact. Prevention of heterosexually transmitted HIV infection will require an extensive educational program aimed specifically at the risk associated with the number and selection of sexual partners and at promoting safer sexual practices.

Adolescent↗
PubMed1988

Risk factors for infection with human immmunodeficiency virus among European expatriates in Africa.

The pattern of cases of AIDS in Belgium suggests that Europeans infected with human immunodeficiency virus (HIV) acquired the infection in Africa. The prevalence of infection was assessed in Belgian advisers and European expatriates and risk factors for infection defined in a case-control study of expatriate men. Fifteen (1.1%) of 1401 Belgian advisers working in Africa and 41 (0.9%) of 4564 European expatriates living in Africa, were positive for antibody to HIV in a voluntary screening programme in Belgium. Among subjects with antibody to HIV the ratio of men to women was 3:1. These subjects did not have a history of intravenous drug abuse or blood transfusion and only one was homosexual. In a case-control study of 33 expatriate men who had antibody to HIV and 119 controls the men with antibody reported significantly more female sexual partners, who were more commonly local; and significantly more sexual contact with prostitutes in Africa. They had a significantly higher prevalence of history of sexually transmitted disease and had received significantly more injections by unqualified staff in Africa during the previous five years. No specific sexual practices were associated with having antibody to HIV. After multivariate analysis sexual contact with local women (adjusted odds ratio 14.7; 95% confidence interval 2.81 to 76.9), sexual contact with prostitutes (adjusted odds ratio 10.8 (1.6 to 71.9), and injections by unqualified staff (adjusted odds ratio 13.5 (3.7 to 49.8) remained independent risk factors for infection. European expatriates in Africa were at increased risk from infection with HIV and were a means of introducing HIV into the heterosexual population in Europe. Transmission from women to men by vaginal intercourse seemed to be the most probable route of infection.

Acquired Immunodeficiency Syndrome↗
PubMed2005

The many faces of sex work.

OBJECTIVE: To compile a global typography of commercial sex work. METHODS: A Medline search and review of 681 "prostitution" articles was conducted. In addition, the investigators pooled their 20 years of collected papers and monographs, and their observations in more than 15 countries. Arbitrary categories were developed to compile a workable typology of sex work. RESULTS: At least 25 types of sex work were identified according to worksite, principal mode of soliciting clients, or sexual practices. These types of work are often grouped under the headings of "direct" and "indirect" prostitution, with the latter group less likely to be perceived or to perceive themselves as sex workers. In general, policing sex work can change its typology and location but its prevalence is rarely affected. The public health implications of sex work vary widely. CONCLUSION: Developing comprehensive sexual health promotion programmes requires a complete understanding of the types of sex work in a particular area. This study provides a checklist for developing appropriate and targeted programmes.

Female↗
PubMed1983

Epidemiology and treatment of gonorrhoea caused by penicillinase-producing strains of Neisseria gonorrhoeae in Fukuoka, Japan.

Thirty strains of penicillinase-producing Neisseria gonorrhoeae (PPNG) were detected by a rapid iodometric method out of 206 strains isolated from patients with gonorrhoea between January and December 1981. Of the 30 patients, five of the nine women were prostitutes and 14 of the 21 men were infected by prostitutes in or around Fukuoka City, with the exception of one who was infected in Formosa. Treatment with ampicillin or amoxycillin resulted in failure whereas treatment with spectinomycin was successful.

Adolescent↗
PubMed1984

Epidemiology of PPNG infections in Amsterdam: analysis by auxanographic typing and plasmid characterisation.

In January 1981 the incidence of penicillinase producing Neisseria gonorrhoeae (PPNG) strains in Amsterdam had increased to 18% of all new cases of gonorrhoea. Auxanographic typing in combination with plasmid determination of 729 PPNG strains showed that in 1981 the predominant and endemic types were those with the Africa plasmid and transfer factor which were non-requiring and inhibited by phenylalanine. In 1982 proline requiring strains with the Asia plasmid and transfer factor increased after being imported and spread by prostitution. Four different plasmid patterns and 12 auxotypes were distinguishable. Unusual auxotypes of both African and Asian plasmid types are frequently imported, some disappearing soon after their introduction into Holland but others providing an opportunity to trace sources and contacts. Prostitution and the biological properties of PPNG strains seem to play an important role in their spread. Only 2.6% of them were isolated from homosexual men. In areas where PPNG strains are prevalent, auxotyping is an important tool in their surveillance.

Female↗
PubMed1984

Susceptibility to antimicrobials of Neisseria gonorrhoeae isolated in Singapore: implications on the need for more effective treatment regimens and control strategies.

The antimicrobial susceptibility of gonococci isolated in Singapore has been studied over several years. In 1983, the prevalence of penicillinase producing Neisseria gonorrhoeae (PPNG) was 33.5% and 64% of non-PPNG isolates had minimum inhibitory concentrations (MICs) of penicillin of greater than or equal to 0.5 mg/l. After a control programme, the isolation of the gonococcus from prostitutes was reduced and there was improvement in its susceptibility to antimicrobials. The incidence of PPNG strains was stabilised with a change in the treatment regimen. An influx of foreign prostitutes, however, had an unfavourable impact on these variables. Countries in South East Asia have a high prevalence of PPNG and non-PPNG strains that have reduced susceptibility to antimicrobials. In view of increased air travel the problem should be seen from a global perspective. Better treatment regimens and control strategies are urgently needed.

Ampicillin↗
PubMed1989

Hepatitis delta virus in homosexual men in Sydney.

In countries not generally endemic for hepatitis B, homosexual men who are carriers of hepatitis B surface antigen (HBsAg) have to date largely been spared additional delta virus infection. A focus of homosexually acquired delta has, however, recently been identified in California. To assess the prevalence and risk factors for delta virus infection in homosexual men in Sydney, we tested the sera of 204 homosexual men with acute or chronic hepatitis B infection for total antibody to delta and delta antigen. Total antibody to delta was detected in eight men and delta antigen in one other (4.4% of the total). All men with antibody or antigen had intravenous drug use as a risk factor. Overall nine of 22 (40.9%) male homosexual intravenous drug users had serological evidence of delta infection. Delta positive patients tended to be younger, to have engaged in prostitution, to have more severe chronic liver disease, to be more likely to have a symptomatic acute illness, and to be less likely to express hepatitis Be antigen (HBeAg) in their sera. Though the homosexual transmission of delta infection cannot be concluded from this study, the detection of delta markers in nine homosexual men (including four prostitutes) suggests considerable potential for dissemination of this virus homosexually.

Adolescent↗
PubMed1991

Evidence for a change in behaviour among heterosexuals in Amsterdam under the influence of AIDS.

In determining the effectiveness of AIDS preventive measures among heterosexuals, trends in visits to two clinics for sexually transmitted diseases (STD) in Amsterdam between 1982 and 1989 are described. Also, data on sexual behaviour are presented that were collected in a sample of 635 heterosexual women and 947 heterosexual men at one of the clinics between September 1986 and December 1988. In 1987, when in The Netherlands for the first time extensive publicity was given to the risk of heterosexual transmission of the human immunodeficiency virus, the numbers of male and female heterosexual attenders started to decline. Exceptions to this general decline were men of Turkish nationality and foreign prostitutes, each group showing a continuing increase. At the same time, the numbers of customers reported by prostitutes in the sample declined markedly between 1986 and 1988, from a median of 35 to 15 per month (p = 0.001). Condom use with casual contacts generally increased in the sample period. We conclude that the publicity given to "heterosexual AIDS"--contributed to by the national AIDS prevention campaign--apparently led to a considerable decrease in the number of risky contacts of heterosexuals in Amsterdam in 1987 and 1988. This does not seem to apply to men with Turkish nationality. In 1989 a change appeared in several subgroups when the number of visitors started to rise. Also, the probability of an STD diagnosis increased in male attenders. This may indicate a change in the tendency towards safer sexual behaviour.

Acquired Immunodeficiency Syndrome↗
PubMed1994

Casual sexual experience abroad in patients attending an STD clinic and at high risk for HIV infection.

OBJECTIVE: To study possible "import" routes of HIV infection to Norway (by obtaining information on casual sexual contacts abroad from patients attending an STD clinic), and to assess their behavioural risk factors (such as alcohol intake, use of condom) for HIV infection. DESIGN AND SETTING: Patients visiting the clinic for sexually transmitted diseases (STD), April-June 1989, received a questionnaire. SUBJECTS: 606 consecutive persons of whom 599 agreed (98.8%) to participate. We grouped the patients in four categories. 1: Sex with a prostitute during the last 5 years, 2: Homosexuals/bisexuals, 3: prostitutes/intravenous drug abusers (IVDUs) and 4: Other heterosexuals. RESULTS: 245 patients (41%) reported having a casual sex partner abroad (M: 182, F: 63), mainly in Europe, particularly in Spain, Denmark and Greece. Outside Europe such contacts were most frequently reported from USA, Brazil and Thailand. Among men who had had sex with a prostitute, 93.5% reported such sex abroad (homosexuals/bisexuals: 63.6%, prostitutes/IVDUs: 66.7%, "other heterosexuals: 32.1%). Homosexual/bisexual men with casual partner(s) abroad used a condom more frequently than did others. CONCLUSION: 245 of 599 persons reported casual sex abroad during 1985-1989, and the different "risk groups" reported countries where most HIV infected persons belonged to their own "risk group". We have reason to believe that alcohol intake increased the likelihood of casual sexual activity and decreased the use of condom. Norwegian travellers need more information on the risks of casual sex abroad, the use of condoms and the combination of alcohol intake and casual sex.

Alcohol Drinking↗
PubMed1994

Sexually transmitted diseases in transient British forces in the tropics.

OBJECTIVE: To compare the incidence of sexually transmitted diseases (STD) in British troops in the tropics with that in a standard population. DESIGN: Retrospective analysis of STD clinic records over one calendar year. SETTING: A British Military Hospital in the Tropics serving 1441 resident personnel. SUBJECTS: All patients attending a STD clinic. MAIN FINDINGS: 815 cases of STD were recorded during the study period, giving incidence rate of 56,558 per 100,000 population per year. When compared with a matched population from England and Wales, the age standardised relative risk for STD amongst tropical troops was 25.0 (95% confidence interval 24.9 to 25.1). Thirty nine percent of cases reported prostitute contact as a source of their disease. Of patients questioned about condom usage, 70% reported that they did not normally use a condom. CONCLUSIONS: British troops spending short periods of time in a tropical environment are significantly more likely to acquire a STD than men in the same age groups in England and Wales. The proportions of cases who reported that they did not use condoms and the number who cited prostitute contact as a source of infection indicate that even greater sexual education of troops on deployment overseas may be required.

Adolescent↗
PubMed1995

HIV/AIDS knowledge and high risk sexual practices among southern California Vietnamese.

OBJECTIVES: Vietnamese immigration to the U.S. since the conclusion of the Vietnam war has been substantial and in Orange County, CA, Vietnamese Americans comprise 3% of the population (the largest community in the US). Our objective was to collect data on the HIV/AIDS knowledge, attitudes and self-reported high risk behaviours within this community. METHODS: A survey instrument was administered anonymously in Vietnamese to 532 respondents in their homes. Individuals from three population strata were randomly sampled: men 18 to 35 years old (N = 193); men 36 to 45 years old (N = 137); and women 18 to 35 years old (N = 202). Data were gathered on: (1) degree of acculturation; (2) knowledge and attitudes towards HIV/AIDS; and (3) self-reported sexual and other high risk practices. RESULTS: Survey data indicated that 38% of respondents were very worried about themselves and 83% were worried about a family member getting AIDS. Knowledge about actual modes of HIV transmission was generally accurate, but a substantial minority still believed that HIV can be transmitted through casual contact, and 68% from needles used in hospitals. Women demonstrated less accurate knowledge than men on five key items. Quarantine of the HIV infected was agreed to by 45%. Twenty-nine percent did not believe that the epidemic would affect them personally, and 49% stated that they did not have enough information about AIDS to protect themselves. Regarding sexual practices, 31% reported never having had sex. Of the others, 8% had two or more sexual partners in the prior 12 months. No same sex behaviour was reported. Six percent of men had visited a female prostitute; of these, 24% had visited 2 or more in the prior 12 months; half of encounters in this time period were outside the US. Substantial percentages of sexually active, unmarried respondents indicated that they never use (17-40%) or only sometimes use (10-32%) condoms. Less than 1% had used injection drugs. CONCLUSIONS: Education should be targeted at the Vietnamese community of southern California to improve knowledge that HIV cannot be contracted through casual contact, to convey information about methods for self-protection, and to reduce high risk sexual practices such as unprotected sex, sex with multiple partners and sex with prostitutes.

Acquired Immunodeficiency Syndrome↗
PubMed1995

A survey on hepatitis B vaccination policies in genitourinary medicine in UK and Ireland.

OBJECTIVE: To determine the policies applied in genitourinary medicine (GUM) departments in the United Kingdom (UK) and Ireland with regard to hepatitis B vaccination. DESIGN: All genitourinary medicine consultants were sent a questionnaire requesting information concerning their selection criteria and the management of patients offered Hepatitis B vaccine. If no response was obtained a second questionnaire was sent. The survey was carried out in 1993. SETTING: All genitourinary medicine departments in UK and Ireland. PARTICIPANTS: 234 consultants were sent the questionnaire. 153 consultants responded. RESULTS: Overall, there was a 65.4% response rate to the questionnaire. Almost all genitourinary physicians would offer the vaccine to male homosexuals and up to 74% offer it to all male homosexuals, intravenous drug users (IVDU) and prostitutes. Of the genitourinary physicians, 96% agreed that hepatitis B virus (HBV) serological markers should be checked prior to or simultaneously with vaccination, yet there was no agreement as to which marker should be performed. Up to 79% of consultants recalled the patients to check their response to vaccination but only 61% offered long term follow up after vaccination. CONCLUSION: HBV vaccine is offered to all male homosexuals, IVDU and prostitutes in GUM departments. Currently, the vaccine is not generally offered to patients who present with sexually transmitted diseases. Almost all genitourinary physicians (96%) agree that HBV serological markers should be checked prior to or simultaneously with the start of the vaccination course and 80% would request hepatitis B surface antibody levels after vaccination to identify inadequate responders and non-responders. From this survey, there appears to be a need for uniform post-vaccination HBV screening and timing and frequency of booster doses.

Consultants↗
PubMed1995

Development and evaluation of screening strategies for Chlamydia trachomatis infections in an STD clinic.

OBJECTIVES: To identify predictors for Chlamydia trachomatis infection among visitors of an STD clinic in Amsterdam in 1986-1988. To design predictor-based screening programmes for C trachomatis. To evaluate the chosen screening strategy in 1993. METHODS: In 1986-1988, 947 heterosexual men and 648 women participated in the study. A medical history was recorded, a physical examination took place and samples were taken for laboratory diagnostics. Information for 1993 was available from routine databases. RESULTS: C trachomatis infections in heterosexual men in 1986-1988 (prevalence 15.8%) were independently associated with: age under 26 years, being an STD contact, coitarche below 13, last sexual contact with a non-prostitute, (muco)-purulent urethral discharge and ten or more leukocytes per microscopic field of urethral smear or urine. For women (prevalence 21.5%) independent predictors were age under 26, no history of STD, being an STD contact, cervical friability, (muco)purulent cervical discharge, presence of clue cells and ten or more leukocytes per field of urethral smear. Screening men with one anamnestic predictor for C trachomatis and ten or more leukocytes in smear or urine (59% of men) would detect 93% of the cases in 1986-1988. For females only universal screening proved to be suitable. After the introduction of a screening strategy in 1989 (universal for women, indicated by urethritis for men), a strong decline was found in the C trachomatis prevalence for all subgroups in 1993, excluding prostitute's clients and Turkish men. CONCLUSIONS: In 1993 the overall C trachomatis prevalence had declined among the attendants of the STD clinic. It seems likely that this fall was caused both by the screening programme and the reduction of risk behaviour.

Adult↗
PubMed2000

Health issues associated with increasing use of "crack" cocaine among female sex workers in London.

OBJECTIVES: To document changes in "crack" cocaine use in the sex industry in London, and to assess health risks associated with the drug. DESIGN: Two serial cross sectional surveys. SUBJECTS: Sex workers interviewed in 1989-9 and 1995-6. MAIN OUTCOME MEASURES: Self reported use of crack cocaine; clinical history of sexually transmitted infection and pregnancy, clinical outcomes. RESULTS: The proportion of women reporting crack use increased significantly from 22/193 (11%) in 1989-91 to 48/143 (34%) in 1995-6. Women in all the main prostitution sectors reported crack use. Crack users had been working in prostitution for longer, were more likely to have worked on the streets, to inject drugs, and to have a partner who injected. Crack use was associated with termination of pregnancy and with hepatitis C infection. The association with hepatitis C was partially explained by confounding with injecting drug use. CONCLUSIONS: Crack use is more common and less problematic than clinical presentation suggests. Use has increased over the past decade, and is associated with hepatitis C infection and termination of pregnancy. It is possible that crack use facilitates hepatitis C transmission due to oral lesions from smoking. Crack use can be difficult to identify because of the stigma of being labelled a "crack whore," therefore information on crack might usefully be integrated into general health promotion material on drugs and safer sex.

Abortion, Induced↗
PubMed2001

Prevalence and risk factors of HSV-1 and HSV-2 antibodies in European HIV infected women.

OBJECTIVES: To investigate the prevalence and risk factors of HSV-1 and HSV-2 antibodies in HIV infected women and the association between recurrent genital ulcerations and HIV disease progression in HSV-2 positive women. METHODS: The presence of HSV antibodies was tested in 276 of the 487 women participating in a European cohort study of HIV infected women. Prevalence rate ratios described the association between HSV infection and its risk factors, using log binomial regression. Generalised estimating equations (GEE) analysis was performed to determine the impact of markers of HIV disease progression on recurrent genital ulcerations. RESULTS: The prevalence of HSV-1 and HSV-2 antibodies was 76% (95% confidence interval (95% CI): 71-81) and 42% (95% CI: 36-50); 30% (95% CI: 24-35) of the women had antibodies against both HSV-1 and HSV-2. The prevalence of HSV-1 was 86% (95% CI: 80-92) in southern Europe compared with 69% (95% CI: 57-79) and 67% (95% CI: 55-77) in central and northern Europe (p=0.002). This geographical variation remained after adjustment for other risk factors. An increasing number of years of sexual activity (p=0.0002) and a history of prostitution (p=0.0001) were independently associated with HSV-2 prevalence. In HSV-2 positive women, symptomatic cases of HSV infection were minimal, but increased with decreasing CD4 count. CONCLUSION: In HIV infected women, the prevalence of HSV antibodies is high and symptomatic cases of HSV infection are minimal, but increase with decreasing CD4 count. HSV-2 but not HSV-1 was related to sexual behaviour (that is, a history of prostitution and the number of sexually active years) in this group of HIV infected women.

Adolescent↗
PubMed1984

Hepatitis b surface antigen and alphafetoprotein levels in the serum of healthy women.

Serum alphafetoprotein (AFP) levels were determined by radioimmunoassay in 24 prostitutes and 16 other women positive for hepatitis B surface antigen (HBsAg), but clinically normal. For every positive woman an effort was made to choose 3 HBsAg-negative comparison women, matched for profession (prostitutes or other), age (+/- 2 years), and social class; however, in 5 instances matched triplets (rather than quadruplets) were formed. Among the 40 HBsAg-positive women 9 were AFP positive (23%), whereas among the 115 HBsAg-negative women 13 were AFP positive (11%). A matched analysis indicates that the difference is marginally significant (one-tailed p = 0.03). This finding is compatible with the view that the induction of AFP synthesis in apparently healthy HBsAg-positive individuals may be related with the oncogenic potential of the hepatitis B virus.

Blood Donors↗
PubMed1989

Epidemiologic evidence for the development of serovar-specific immunity after gonococcal infection.

We tested the hypothesis that strain-specific immunity occurs after gonococcal infection in a longitudinal study of 227 prostitutes resident in one small community who experienced frequent gonococcal infections. Women were examined and cultured for Neisseria gonorrhoeae at 2-wk intervals. Gonococcal isolates were typed according to protein 1 serovar, auxotype, and beta-lactamase plasmid type, and classified as to serovar and strain. The hypothesis was tested by comparing the predictions of the hypothesis with the observations of the study. Over the 14-mo period of the study, major changes in the prevalence of specific serovars were observed in the gonococcal population infecting these women. Women with HIV infection experienced a higher rate of gonococcal infection (0.56 +/- 0.03 vs. 0.46 +/- 0.04, P less than 0.05, t test) compared with HIV-negative women and were more likely to experience multiple infections with the same strain. The duration of prostitution was inversely related to the frequency of gonococcal infection. Women experiencing an infection with a specific gonococcal serovar were at a 2- to 10-fold reduced risk of reinfection with the same serovar, except for the 1B-1 serovar. The results of the study were consistent with all four predictions of the hypothesis. Infection with a specific gonococcal serovar results in specific but incomplete protection against subsequent infection with the homologous serovar. The mechanism of this protection remains to be determined.

Adult↗
PubMed1994

Antibodies to opacity proteins (Opa) correlate with a reduced risk of gonococcal salpingitis.

Acute salpingitis complicating cervical gonococcal infection is a significant cause of infertility. Relatively little data are available concerning the pathophysiologic mechanisms of this disease. A cohort of 243 prostitutes residing in Nairobi were followed between March 1985 and April 1988. Gonococcal cultures were performed at each visit, and acute salpingitis was diagnosed clinically. Serum at enrollment was tested by immunoblot for antibody to gonococcal outer membrane proteins. 8.6% (146/1689) of gonococcal infections were complicated by salpingitis. Increased risk of salpingitis was associated with younger age, shorter duration of prostitution, HIV infection, number of gonococcal infections, and episodes of nongonococcal salpingitis. Rmp antibody increased the risk of salpingitis. Antibody to Opa decreased the risk of salpingitis. By logistic regression analysis, antibody to Opa was independently associated with decreased risk of gonococcal salpingitis (adjusted odds ratio [OR], 0.35; 95% confidence interval [95%CI], 0.17-0.76); HIV infection (adjusted OR, 3.5; 95% CI, 0.96-12.8) and episodes of nongonococcal salpingitis (adjusted OR, 3.4; 95% CI, 1.8-6.4) were independently associated with an increased risk of salpingitis. Antibody to Opa appears to protect against ascending gonococcal infection, perhaps by interfering with Opa mediated adherence and endocytosis. The demonstration of natural immunity that protects against upper genital tract infection in women suggests that a vaccine to prevent gonococcal salpingitis is possible.

Adult↗