The operation, quality and costs of a district hospital laboratory service in Malawi

Laboratory services are run down in many low-income countries, severely constraining their input to patient care and disease surveillance. There are few data about the quality and cost of individual components of the laboratory service in poorer countries, yet this information is essential if optimal use is to be made of scarce resources. Staff time, range of tests, workload, and safety procedures were monitored over 12 months (1997-98) in a typical district hospital laboratory in Malawi. Data were collected to calculate the total economic cost of these services. Of the 31203 tests performed, 84% were to support blood transfusion and diagnosis of malaria and tuberculosis (TB). Test quality was reasonable for malaria and TB microscopy and blood transfusion, but poor for haemoglobin estimation. The cost per test ranged from US dollars 0.35 for haemoglobin to US dollars 11.7 per unit of blood issued and the total annual cost of the laboratory service was US dollars 32618. Blood transfusion and microscopy for malaria and TB comprised the majority of tests. Ensuring that these tests are of the highest quality will therefore have the most impact in reducing wastage of laboratory resources. Inadequate quality of haemoglobin estimations is a particular problem. The findings of this study are likely to be relevant to other low-income countries with similar disease burdens.

Sexually transmitted infections and sexual behaviour among commercial sex workers in a rural district of Malawi

In Thyolo District, Malawi, a study was conducted among commercial sex workers (CSWs) attending mobile clinics in order to; determine the prevalence and pattern of sexually transmitted infections (STIs), describe sexual behaviour among those who have an STI and identify risk factors associated with 'no condom use'. There were 1817 CSWs, of whom 448 (25%) had an STI. Of these, the commonest infections included 237 (53%) cases of abnormal vaginal discharge, 109 (24%) cases of pelvic inflammatory disease and 95 (21%) cases of genital ulcer disease (GUD). Eighty-seven per cent had sex while symptomatic, 17% without condoms. Having unprotected sex was associated with being married, being involved with commercial sex outside a known rest-house or bar, having a GUD, having fewer than two clients/day, alcohol intake and having had no prior medication for STI. The high levels of STIs, particularly GUDs, and unprotected sex underlines the importance of developing targeted interventions for CSWs and their clients.

Behavioural characteristics, prevalence of Chlamydia trachomatis and antibiotic susceptibility of Neisseria gonorrhoeae in men with urethral discharge in Thyolo, Malawi

A study was carried out in a rural district of Malawi among men presenting with urethral discharge, in order to a) describe their health seeking and sexual behaviour b) determine the prevalence of Neisseria gonorrhoeae (N.gonorrhoeae) and Chlamydia trachomatis (C.trachomatis), and c) verify the antibiotic susceptibility of N.gonorrhoeae. A total of 114 patients were entered into the study. 61% of study subjects reported having taken some form of medication before coming to the Sexually Transmitted Infections (STI) clinic. The most frequent alternative source of care was the traditional healer. 68 (60%) patients reported sex during the symptomatic period the majority (84%) not using condoms. Using ligase chain reaction on urine, N.gonorrhoeae was detected in 91 (80%) and C.trachomatis in 2 (2%) of urine specimens. 45 of 47 N.gonorrhoeae isolates produced penicillinase, 89% showing multi-anti-microbial resistance. This study emphasises the need to integrate alternative care providers and particularly traditional healers in STI control activities and to encourage their role in promoting safer sexual behaviour. In patients presenting with urethral discharge in our rural setting, C.trachomatis was not found to be a major pathogen. Antimicrobial susceptibility surveillance of N.gonorrhoeae is essential in order to prevent treatment failures and control the spread of resistant strains.

Health seeking and sexual behaviour among patients with sexually transmitted infections - the importance of traditional healers

We aimed to describe health seeking and sexual behaviour including condom use among patients presenting with sexually transmitted infections (STI) and, to identify socio-demographic and behavioural risk factors associated with "no condom use" during the symptomatic period. A cross-sectional study of consecutive new STI cases presenting at the district STI clinic in Thyolo were interviewed by STI counsellors after obtaining informed consent. All patients were treated according to National guidelines. Of 498 new STI clients, 53% had taken some form of medication before coming to the STI clinic, the most frequent alternative source being the traditional healer (37%). 46% of all clients reported sex during the symptomatic period (median=14 days), the majority (74%) not using condoms. 90% of all those who had not used condoms resided in villages and had seen only the traditional healer. Significant risk factors associated with "no condom use" included: visiting a traditional healer; being female; having less than 8 years of school education; and being resident in villages. Genital ulcer disease (GUD) was the most common STI in males (49%) while in females this comprised 27% of STIs. These findings, especially the extremely high GUD prevalence is of particular concern, considering the high national HIV prevalence in Malawi (9%) and the implications for STI and HIV transmission. There is an urgent need to integrate traditional healers in control activities, encourage their role in promoting safer sexual behaviour, and to reorient or even change existing strategies on condom promotion and STI control.

Behavioural characteristics, prevalence of Chlamydia trachomatis and antibiotic susceptibility of Neisseria gonorrhoeae in men with urethral discharge in Thyolo, Malawi

A study was carried out in 2000/2001 in a rural district of Malawi among men presenting with urethral discharge, in order to (a) describe their health-seeking and sexual behaviour, (b) determine the prevalence of Neisseria gonorrhoeae and Chlamydia trachomatis, and (c) verify the antibiotic susceptibility of N. gonorrhoeae. A total of 114 patients were entered into the study; 61% reported having taken some form of medication before coming to the sexually transmitted infections clinic. The most frequent alternative source of care was traditional healers. Sixty-eight (60%) patients reported sexual encounters during the symptomatic period, the majority (84%) not using condoms. Using ligase chain reaction on urine, N. gonorrhoeae was detected in 91 (80%) and C. trachomatis in 2 (2%) urine specimens. Forty five of 47 N. gonorrhoeae isolates produced penicillinase, 89% showing multi-antimicrobial resistance. This study emphasizes the need to integrate alternative care providers and particularly traditional healers in control activities, and to encourage their role in promoting safer sexual behaviour. In patients presenting with urethral discharge in our rural setting, C. trachomatis was not found to be a major pathogen. Antimicrobial susceptibility surveillance of N. gonorrhoeae is essential in order to prevent treatment failures and control the spread of resistant strains.

Health seeking and sexual behaviour in patients with sexually transmitted infections: the importance of traditional healers in Thyolo, Malawi

OBJECTIVES

To describe health seeking and sexual behaviour including condom use among patients presenting with sexually transmitted infections (STIs) and, to identify sociodemographic and behavioural risk factors associated with "no condom use" during the symptomatic period.

METHODS

A cross sectional study of consecutive new STI cases presenting at the district STI clinic in Thyolo, Malawi. They were interviewed by STI counsellors after obtaining informed consent. All patients were treated according to national guidelines.

RESULTS

Out of 498 new STI clients, 53% had taken some form of medication before coming to the STI clinic, the most frequent alternative source being the traditional healer (37%). 46% of all clients reported sex during the symptomatic period (median 14 days), the majority (74%) not using condoms. 90% of all those who had not used condoms resided in villages and had seen only the traditional healer. Significant risk factors associated with "no condom use" included visiting a traditional healer, being female, having less than 8 years of school education, and being resident in villages. Genital ulcer disease (GUD) was the most common STI in males (49%) while in females this comprised 27% of STIs.

CONCLUSIONS

These findings, and especially the extremely high GUD prevalence is of particular concern, considering the high national HIV prevalence in Malawi (9%) and the implications for STI and HIV transmission. There is an urgent need to integrate traditional healers in control activities, encourage their role in promoting safer sexual behaviour, and to reorient or even change existing strategies on condom promotion and STI control.

HIV prevalence and demographic risk factors in blood donors

OBJECTIVES

To estimate HIV prevalence in various blood donor populations, to identity sociodemographic risk factors associated with prevalent HIV and to assess the feasibility of offering routine voluntary counselling services to blood donors.

DESIGN

Cross-sectional study.

SETTING

Thyolo district, Malawi.

METHODS

Data analysis involving blood donors who underwent voluntary counselling and HIV testing between January 1998 and July 2000.

RESULTS

Crude HIV prevalence was 22%, while the age standardised prevalence (>15 years) was 17%. Prevalence was lowest among rural donors, students and in males of the age group 15-19 years. There was a highly significant positive association of HIV prevalence with increasing urbanisation. Significant risk factors associated with prevalence for both male and female donors included having a business-related occupation, living in a semi-urban or urban area and being in the age group 25-29 years for females and 30-34 years for males. All blood donors were pre-test counselled and 90% were post test counselled in 2000.

CONCLUSIONS

HIV prevalence in blood donors was alarmingly high, raising important concerns on the potential dangers of HIV transmission through blood transfusions. Limiting blood transfusions, use of a highly sensitive screening test, and pre-donation selection of donors is important. The experience also shows that it is feasible to offer pre and post test counselling services for blood donors as an entry point for early diagnosis of asymptomatic HIV infection and, broader preventive strategies including the potential of early access to drugs, for the prevention of opportunistic infections.

Serological and molecular screening for viruses in blood donors from Ntcheu, Malawi: high prevalence of HIV-1 subtype C and of markers of hepatitis B and C viruses

The prevalence of antibodies to human immunodeficiency virus type 1 (HIV-1), hepatitis C virus (HCV), human T lymphotropic virus I (HTLV-I), and hepatitis B (HBV) surface antigen (HBsAg) was determined in blood donors from Ntcheu, Malawi. Each donation was also screened for HIV-1 RNA and HCV RNA. Among 159 blood donations, the prevalence of HIV-1 infection was 10.7%, 8.1% for HBV carriage, 6.8% for anti-HCV, and 2.5% for anti-HTLV-I. HIV-1/HTLV-I and HIV-1/HCV dual infections were observed in 1.2% of the donations. Consequently, 13% of blood donors from Ntcheu should be deferred for retroviral infections and 15% for hepatitis viral infections. Sequence analyses of the HIV-1 strains revealed a relatively homogeneous circulation of subtype C viruses in Malawi. These findings confirm the high endemicity of blood-borne viruses in Malawi and the need for a sensitive viral screening of blood donations to improve blood safety.

Implementing a malaria curtains project in rural Malawi

This paper describes planning, implementation, monitoring and evaluation activities carried out in support of a malaria control project that used permethrin-impregnated curtains in eight villages in rural Malawi. Findings from formative evaluation and project monitoring aspects of the evaluation are presented. Permethrin-impregnated curtains were introduced to villagers who participated in household self-help projects. To implement the project, village health workers were trained and worked closely with existing project personnel as well as traditional headmen to assure village participation, facilitate health education and coordinate curtain-dipping (impregnation) meetings. A quasi-experimental evaluation design used surveys and observations to measure change in cognitive, behavioural and health outcome indicators. Village adoption rates averaged 50%, with variation between villages. Monitoring data showed a high degree of compliance with curtain re-impregnation initially and high perceived efficacy of curtains. Issues discussed include village readiness for change, trust, acceptability of the innovation, cost, sustainability and leadership.