The HIV paradox: Perinatal mortality is lower in HIV-positive mothers-A field case-control study in Ethiopia

OBJECTIVE

Sub-Saharan African countries have the highest perinatal mortality rates. Although HIV is a risk factor for perinatal death, antioretroviral therapy (ART) programs have been associated with better outcomes. We aimed to investigate how maternal HIV affects perinatal mortality.

METHODS

The authors performed a nested case-control study at Saint Luke Hospital, Wolisso, Ethiopia. Data on sociodemographic characteristics, current maternal conditions, obstetric history, and antenatal care (ANC) services utilization were collected. The association between perinatal mortality and HIV was assessed with logistic regression adjusting for potential confounders.

RESULTS

A total of 3525 birthing women were enrolled, including 1175 cases and 2350 controls. Perinatal mortality was lower among HIV-positive women (18.3% vs. 33.6%, P = 0.007). Crude analysis showed a protective effect of HIV (odds ratio, 0.442 [95% confidence interval, 0.241-0.810]), which remained after adjustment (adjusted odds ratio, 0.483 [95% confidence interval, 0.246-0.947]). Among HIV-negative women, access to ANC for women from rural areas was almost half (18.8% vs. 36.2%; P < 0.001), whereas in HIV-positive women, no differences were noted (P = 0.795).

CONCLUSION

Among HIV-positive mothers, perinatal mortality was halved and differences in access to ANC services by area were eliminated. These data highlight the benefits of integrating ANC and HIV services in promoting access to the health care system, reducing inequalities and improving neonatal mortality.

Epidemiological factors affecting health service utilization in diabetic patients in Ethiopia

 

Diabetes-related deaths reached 2 million in 2019. The highest percentage of undiagnosed diabetes (59.7%) was observed in Africa, where accessibility to health services is pivotal to improving the outcome of diabetic patients. The study aims to assess the association between diabetic patients’ epidemiological factors and accessibility to healthcare services in a low-income country. The retrospective cohort study included diabetes-related outpatient department (OPD) visits and hospitalizations from 01/01/2018 to 31/08/2021 at St Luke Hospital (Ethiopia). Potential predictors were sociodemographic factors, COVID-19 cases, mean monthly temperature, and precipitations. The ARIMA method was applied to OPD visits and hospitalizations time series. OPD visits increased over time (p < 0.001) while hospitalizations were stable. The time series model was ARIMA(0,1,1) for OPD visits and ARIMA(0,0,0) for hospitalizations. Diabetes OPD patients were 1,685 (F = 732, 43%). Females had an average of 16% fewer OPD accesses per month (p = 0.002). Patients missing follow-up were 801 (48%). The time between follow-ups was longer as age increased (p < 0.001). There were 57 fewer forecast OPD visits per month on average using COVID-19 cases as ARIMA regressor. OPD visits decreased differently by geographic area as COVID-19 cases increased (p < 0.001). Hospitalized patients for diabetes were 408, 85 (20.8%) newly diagnosed. The odds ratio (OR) of diagnosis at admission was lower as age increased (OR 0.98, p = 0.009). Compared to type 1 diabetes, hospitalized females with type 2 (117-39.7%) were fewer than males (p = 0.019). Readmissions were 52, 10 (19.2%) within 30 days, without OR difference by sex, age, or diabetes type. Despite an increase in OPD visits for diabetic patients over the study period, the number of losses at follow-up and diagnoses at hospitalization remains high. Gender and age influenced service utilization. Females’ access to care is still problematic (concept of “missing women”).

Key messages

• Primary health care should be implemented to improve access to health services and diabetes management.

• Ensuring equity in healthcare accessibility should be a priority in low-income countries.

Cross-sectional nutrition assessment in a refugee camp in Gambella region, Ethiopia

 

Minors account for 20 percent of the world’s migrants, reaching 33 million in 2019. The prevalence of malnutrition has been reported between 17 and 21% among refugees. However, data about Sub-Saharan African refugees is lacking. The study evaluates the nutritional status of refugees in the Nguenyyiel camp in Gambella (Ethiopia). The retrospective cohort study included all children under five attending the first visit to the refugee camp’s health post between 01/06/2021 and 31/08/2021. Sociodemographic data, body weight, and upper arm circumference (MUAC) were recorded. The z-score of weight for age (WFA) and MUAC for age (MUACZ) were estimated using the R ‘anthro’ package developed by the World Health Organization (WHO). Children with WFA &lt;-2 standard deviations (SD) were considered underweight, those &gt;2SD overweight. A MUACZ &lt;-2SD defined acute malnutrition. Among the 782 patients admitted, 415 (53%) were under five. Females were 195 (47%). The mean age was 2.1 years (SD 1.6). The mean body weight was 11kg (SD 5). Considering the WFA, 200 (48%) children were within +2 SD. Children with WFA &lt;-2SD were 92 (29%), those &gt; 2SD were 28 (9%). The frequency of children with WFA &lt;-2SD was higher in boys (p = 0.049). There were no differences in the frequency of children with WFA &gt;2SD based on sex (p = 0.998). WFA decreased as age increased (p = 0.048). MUAC was recorded for 273 (66%) children. The mean MUAC was 14.2mm (SD 2.4). Children with MUAC z-scores within +2SD were 245 (77%). Children &lt;-2SD were 92 (8%). The frequency of children with MUACZ &lt;-2SD was not significantly different based on sex or age (p = 0.125, p = 0.324). The prevalence of malnutrition was moderate in the Nguenyyiel camp. At the same time, the frequency of underweight children was high, particularly among boys (34%) and with increasing age.

Key messages

• Nutrition remains a problem in refugee camp settings, especially in children.

• Ensuring the health of refugees, as vulnerable population, should be a priority for both governments and international organizations.

Diabetic ketoacidosis among patients admitted to a general hospital in Ethiopia: a spatial analysis

 

Non-Communicable diseases are rapidly increasing in low- and middle-income countries. The number of patients with diabetes is estimated to reach 4.7 million in Ethiopia by 2045. Ensuring access to care is critical to improving the management and clinical outcome of diabetic patients. The study describes the characteristics of patients with diabetic ketoacidosis (DKA) and evaluates the relationship between the severity of clinical presentation and the travel time to the hospital. A retrospective cohort study was conducted on the charts of patients admitted for DKA at St. Luke Catholic Hospital (SLCH), Wolisso, Oromia Region (Ethiopia), between 01/01/2021 and 31/08/2021. Demographic and clinical data were collected. Negative binomial regression was used to explore the relationship between the incidence of admissions for DKA and travel time to the hospital. Logistic regression was used to estimate the odds of insulin treatment. Results were presented with 95% confidence intervals. During the study period, 651 patients were admitted, including 77 (11.8%) for DKA (33 females (42.9%) and 44 males (57.1%)), with no differences based on diabetes type (p = 0.258). The mean age was 35 years (IQR 19.0-52.0). Mean BMI was 18.4 kg/m2 (IQR 15.6-19.5), with no differences based on diabetes type (p = 0.639). Cumulative incidence of hospitalizations was significantly correlated to travel time to the hospital (p = 0.039) with an Incident Rate Ratio of 1.01%[1.00-1.02]. The cumulative incidence ranged from 7.0%[4.5-10.3] in Wolisso to 30.8%[14.3-51.8] in Ameya, the most distant district. The relative probability of insulin treatment was higher with increasing time to SLCH (OR 1.11[1.02-1.21] p = 0.027). The hospitalization rate for DKA was significantly correlated with the travel time to the hospital. Access to care is therefore a key factor for health that should be taken into account by improvement programs and the spatial analysis of travel time could help focus on priority areas.

Key messages

• Spatial analysis can be a robust tool to tailor population healthcare needs on its own topography.

• Health policies must consider that accessibility can influence the severity of clinical presentation.

The impact of the COVID-19 pandemic on health service use in sub-Saharan Africa

SETTING: Six hospitals in four sub-Saharan African countries.OBJECTIVE: To examine the indirect effects of COVID-19 on health service utilisation and to explore the risk of bias in studies on prediction models.DESIGN: Monthly data were analysed using interrupted time-series modelling. We used linear mixed-effect models for the analysis of antenatal care visits, institutional deliveries, vaccinations, outpatient visits and hospital admissions, and generalised linear mixed-effect models for hospital mortality.RESULTS: During 2018–2020, the six hospitals recorded a total of 57,075 antenatal care visits, 38,706 institutional deliveries, 312,961 vaccinations, 605,925 out-patient visits and 143,915 hospital admissions. The COVID-19 period was associated with decreases in vacci-nations (− 575 vaccinations, P < 0.0001), outpatient visits (− 700 visits, P < 0.0001) and hospital admission (− 102 admission, P = 0.001); however, no statistically significant effects were found for antenatal care visits (P = 0.71) or institutional deliveries (P = 0.14). Mortality rate increased by 2% per month in the pre-COVID-19 period; however, a decreasing trend (by 2% per month) was observed during the COVID-19 period (P = 0.004). Subgroup and sensitivity analyses broadly confirmed the main findings with only minor inconsistencies. A reduction in outpatient visits was also observed in hospitals from countries with a higher Stringency Index and in urban hospitals.CONCLUSIONS: The pandemic resulted in a reduction in health service utilisation. The decreases were less than anticipated from modelling studies.

The HIV paradox: perinatal mortality is lower in HIV+ mothers. A case-control study in Ethiopia

Background

In Ethiopia, HIV prevalence is 1.2% in 15-49-year-old women, peaking at 3% in aged 40-44. Nationally, efforts have made to provide HIV testing and treatment to all HIV+ subjects, and prevention of mother-to-child transmission. This may imply a closer monitor of health conditions for HIV+ pregnant women. Moreover, antenatal care (ANC) in the third trimester of pregnancy is associated with lower perinatal mortality (PNM). Considering this, we aimed at comparing PNM between HIV+ and HIV- mothers.

Methods

The study was conducted in Wolisso Hospital, Oromiya Region, Ethiopia, a second level hospital with a 1,000,000-catchment area. Cases were all mothers who experienced a perinatal death before hospital discharge. For each case, two mothers who gave birth to a baby alive until discharge were selected as controls. A regression model was built, considering maternal age, rural-urban residence, grand multiparity, twin pregnancy, maternal ongoing chronic/infectious disease and provision of ANC as potential confounders.

Results

Overall, 1175 cases and 2350 controls were included. HIV+ women (n = 71; 2,0%) showed a crude OR = 0.44 (95%CI: 0.24-0.81) for PNM and an adjusted aOR=0.50 (95%CI: 0.25-0.98) when controlling for the aforementioned confounders, including provision of ANC. While 69,0% of HIV+ women received specific ANC, only 24,2% of HIV- women did (p(χ2)&lt;0.001).

Conclusions

Our findings show how the risk of PNM is 50% less in HIV+ mothers. Because of their HIV-positive-status, they are more likely to be in contact with healthcare providers and, thus, to have higher chances to be addressed to ANC services. A large part of the contribution seems to reside in activities directly related to HIV control. This evidence supports national policies against HIV and suggests a considerable improvement of PNM by extending high quality ANC to all pregnant Ethiopian women. Paradoxically, HIV stands out for being a health threat that reduces PNM.

Key messages

In Wolisso hospital, a second level general hospital in Ethiopia, babies born to HIV+ women have a -50% risk of perinatal death. Extending high quality ANC is worth the effort: removing barriers to access and reaching all pregnant women would lead to a massive reduction in perinatal mortality.

Effects of maternity waiting homes on perinatal deaths in an Ethiopian hospital. A case-control study

Background

A Maternity Waiting Home (MWH) is a residential facility located near a medical facility, where women with high risk pregnancies can await and be transferred to the medical facility shortly before delivery or earlier if a complication arise. MWH are widespread in the developing countries, to reduce the long distances to reach health facilities. The aim of this study was to investigate whether MWH was an effective strategy in reducing perinatal deaths at Wolisso Hospital in Ethiopia, from 2014 to 2017. This hospital is supported by the Italian NGO Doctors With Africa CUAMM, with a strong commitment to reduce maternal and child mortality.

Methods

Through a case-control study, we compared perinatal mortality among women admitted via MWH and women admitted directly to the hospital. Cases were mothers who experienced at least a perinatal death before discharge. For each case, two mothers who gave birth to one or more babies alive until discharge were selected as controls. 3 groups of confounding variables were considered: maternal conditions or related to the current pregnancy, variables related to the delivery and neonatal characteristics. A regression model was built adjusting for each group. Statistically significant variables were combined in a final model.

Results

1175 cases and 2350 controls were included. Women admitted through MWH showed a OR 0.49 (95%CI:0.33-0.71; p &lt; 0.000) for perinatal mortality when adjusted for the maternal/current pregnancy conditions, and a OR 0.60 (95%CI:0.40-0.90, p = 0.013) when adjusted for the delivery variables. In the final model the risk of perinatal mortality for women admitted to MWH was 54% less than those admitted directly to the hospital (OR = 0.46, 95%CI:0.30-0.70; p &lt; 0.000).

Conclusions

Our results show a more than halved risk of perinatal death cases for women admitted to the hospital through a MWH in rural Ethiopia, and support the policy implemented by the government in building such structures nearby each hospital.

Key messages

Maternity Waiting Home is a structure near a health facility, where pregnant women at risk wait for their delivery. MWH is an easy and effective tool to reduce perinatal deaths in rural Ethiopia.

Association between infection with Helicobacter pylori and atopy in young Ethiopian children: A longitudinal study

BACKGROUND

Epidemiological evidence from developed countries indicates that Helicobacter pylori infection correlates with a reduced risk of atopy and allergic disorders; however, limited data are available from low-income countries.

OBJECTIVE

We examined associations between H. pylori infection in early childhood and atopy and reported allergic disorders at the age of 6.5 years in an Ethiopian birth cohort.

METHODS

A total of 856 children (85.1% of the 1006 original singletons in a population-based birth cohort) were followed up at age six and half years. An interviewer-led questionnaire administered to mothers provided information on demographic and lifestyle variables. Questions on allergic disease symptoms were based on the International Study of Asthma and Allergies in Children (ISAAC) core allergy and environmental questionnaire. Serum samples were analysed for total IgE levels and anti-H. pylori cytotoxin-associated gene A (CagA) IgG antibody using commercially available ELISA kits. Stool samples were analysed for H. pylori antigen using a rapid immunochromatographic test. The independent effects of H. pylori infection (measured at age of 3, 5 and 6.5 years) on prevalence and incidence of atopy and reported allergic disorders (measured at age of 6.5 years) were determined using multiple logistic regression.

RESULTS

In cross-sectional analysis, current H. pylori infection at age 6.5 years was inversely, though not significantly, related to prevalence of atopy and "any allergic condition" at age 6.5 years. However, detection of H. pylori infection at any point up to age 6.5 years was associated with a significantly reduced odds of both atopy and "any allergic condition" (adjusted OR AOR, 95% CI, 0.54; 0.32-0.92, P = .02, and .31; 0.10-0.94, P = .04, respectively). In longitudinal analyses, H. pylori infection at age 3 was inversely associated with incidence of atopy (AOR, 95% CI, 0.49; 0.27-0.89, P = .02). Furthermore, among H. pylori-infected children, those with a CagA+ strain had a more pronounced reduction in odds of atopy (AOR = 0.35 vs 0.63 for CagA+ vs CagA-), and this reduction reached borderline significance.

CONCLUSION

These data are consistent with the hypothesis that early exposure to H. pylori is inversely associated with atopy and allergic conditions. A possible modest protective association against atopy was observed in those infected with a more virulent CagA+ strain of H. pylori.

Determinants of CD4 Counts Among HIV-Negative Ethiopians: Role of Body Mass Index, Gender, Cigarette Smoking, Khat (Catha Edulis) Chewing, and Possibly Altitude?

To study the determinants of CD4% and CD4 counts among HIV-negative Ethiopians, and to identify factors susceptible to explain the low CD4 counts observed among Ethiopian subjects. Cohort studies among factory workers in Akaki and Wonji, Ethiopia. Clinical and laboratory examinations, including determination of HIV serological status and T-cell subsets, were performed during follow-up visits every six months. In addition, micronutrients (retinol, carotenoids, tocopherol, transferrin receptor, and selenium) plasma concentrations were determined in a subset of 38 HIV-positive and 121 HIV-negative participants. HIV-negative participants with at least one CD4 count measurement were 157 females in Akaki, 203 males in Akaki, and 712 males in Wonji. CD4 counts were independently and positively associated with body mass index (through an increase in lymphocyte counts), female gender (through an increase in CD4%), cigarette smoking (through an increase in CD4%), khat chewing (through an increase in both lymphocyte counts and CD4%), and Akaki study site (through a large increase in lymphocyte counts compensating a decrease in CD4%). Intestinal parasitic infections were not associated with CD4% or CD4 counts. Retinol, carotenoids, and alpha-tocopherol plasma concentrations decreased with HIV infection and advancing immunosuppression, but were not associated with CD4 counts among HIV-negative subjects. Low body mass index among Ethiopians may have contributed to their overall low CD4 counts. Other factors remain to be elucidated.

Role of incidental and/or cured intestinal parasitic infections on profile of CD4+ and CD8+ T cell subsets and activation status in HIV-1 infected and uninfected adult Ethiopians

Intestinal parasitic infections have been suggested to cause persistent immune activation leading to an unbalanced immune state. Such a state has been proposed to be a major factor in the pathogenesis of AIDS in an African context. The present study investigated the effect of incidental parasitic infection and treatment on the profile of T cell differentiation and activation markers on CD4+ and CD8+ T cells from HIV-1 infected and uninfected adult Ethiopians. Cryopreserved PBMCs from 64 subjects (41 HIV-negative and 23 HIV-positive) with follow-up visits at 6-monthly intervals were used to compare the effect of incidental intestinal parasites and their treatment upon T cell subset profiles and activation status. The samples were stained with antibodies to various T cell differentiation and activation markers allowing naive, memory, effector, memory/effector, activated and resting CD4+ and CD8+ T cell subsets to be quantified by triple-colour FACScan. Incidental intestinal parasitic infections resulted in a significant increase in memory CD4+ T cell numbers both in HIV-negative and HIV-positive subjects (P < 0.05). There was also a significant increase in the percentage of CD8+ HLA-DR+ T cells (P < 0.05) in HIV-positive subjects co-infected with parasites. In HIV-negative subjects, a significant decline in activated cells and a significant increase in resting CD8+ T cells (P < 0.05) was observed after treatment for parasites. These data suggest that intestinal parasitic infections could result in the alteration of T cell subset counts and also in the up-regulation of T cell activation markers in peripheral blood. Treatment of parasitic infections showed a tendency to reduce the activation suggesting that, together with other community based intervention strategies, such treatment could be used to down-regulate immune activation and hence protect the host from being easily attacked by HIV.

Low incidence of syphilis among factory workers in Ethiopia: effect of an intervention based on education and counselling

BACKGROUND

The prevalence and incidence of syphilis infection were examined in a cohort study of factory workers in Ethiopia.

METHOD

Between February 1997 and March 1999, 409 men and 348 women were enrolled and followed in the cohort study.

RESULTS

The prevalence (95% CI) of past/current syphilis (positive TPPA serology) was 28.9% (25.7% to 32.3%), and factors associated with past/current syphilis were markers of risky sexual behaviours including HIV infection. In this cohort of factory workers subject to public information/education meetings, testing for HIV antibodies, and individual counselling, the incidence (97.5% one sided CI) of new syphilis infections was 0/691 = 0 (0 to 0.5) per 100 person years.

CONCLUSION

This study has documented a reduction in risky sexual behaviours and a low syphilis incidence among factory workers participating in a cohort study on HIV infection progression in Addis Ababa.

Distribution of lymphocyte subsets in healthy human immunodeficiency virus-negative adult Ethiopians from two geographic locales

Immunological values for 562 factory workers from Wonji, Ethiopia, a sugar estate 114 km southeast of the capital city, Addis Ababa, Ethiopia, were compared to values for 218 subjects from Akaki, Ethiopia, a suburb of Addis Ababa, for whom partial data were previously published. The following markers were measured: lymphocytes, T cells, B cells, NK cells, CD4(+) T cells, and CD8(+) T cells. A more in depth comparison was also made between Akaki and Wonji subjects. For this purpose, various differentiation and activation marker (CD45RA, CD27, HLA-DR, and CD38) expressions on CD4(+) and CD8(+) T cells were studied in 60 male, human immunodeficiency virus-negative subjects (30 from each site). Data were also compared with Dutch blood donor control values. The results confirmed that Ethiopians have significantly decreased CD4(+) T-cell counts and highly activated immune status, independent of the geographic locale studied. They also showed that male subjects from Akaki have significantly higher CD8(+) T-cell counts, resulting in a proportional increase in each of the CD8(+) T-cell compartments studied: naïve (CD45RA(+)CD27(+)), memory (CD45RA(-)CD27(+)), cytotoxic effector (CD45RA(+)CD27(-)), memory/effector (CD45RA(-)CD27(-)), activated (HLA-DR(+)CD38(+)), and resting (HLA-DR(-)CD38(-)). No expansion of a specific functional subset was observed. Endemic infection or higher immune activation is thus not a likely cause of the higher CD8 counts in the Akaki subjects. The data confirm and extend earlier observations and suggest that, although most lymphocyte subsets are comparable between the two geographical locales, there are also differences. Thus, care should be taken in extrapolating immunological reference values from one population group to another.

Factors associated with HIV-1 infection among sex workers of Addis Ababa, Ethiopia

OBJECTIVE

To study the prevalence and risk factors for HIV infection among sex workers of Addis Ababa, Ethiopia.

DESIGN AND METHODS

Cross-sectional survey on socio-demographic characteristics, behaviours, and HIV serological status of sex workers attending two health centres of Addis Ababa.

RESULTS

HIV prevalence among sex workers was 274 of 372 (73.7%). Several factors were significantly associated with an increased risk of being HIV-infected [among others, working in 'shared rooms', high number of clients, use of injectable hormones, and positive Treponema pallidum particle agglutination (TPPA) serology], and others with a decreased risk (being born in Addis Ababa, high level of education, peer education on sex work, condom use, use of oral pill, and use of condoms for contraception). Of interest, sex workers who were using condoms for contraception were, compared with others, more likely to use condoms consistently (65 versus 24%, respectively; P < 0.001), and less likely to be HIV-infected (55 versus 86%, respectively; P < 0.001). In multivariate analysis [log-binomial model, giving estimates of the prevalence ratio (PR)], being born in Addis Ababa (PR = 0.74; 95% confidence interval (CI), 0.61-0.91), using condoms for contraception (PR = 0.73; 95% CI, 0.64-0.85), and a positive TPPA serology (PR = 1.21; 95% CI, 1.09-1.36), remained significantly associated with HIV infection.

CONCLUSIONS

HIV prevalence was remarkably high among sex workers of Addis Ababa. Condom use was higher, and HIV prevalence lower, in sex workers using condoms not only for prevention of HIV and sexually transmitted diseases, but also for contraceptive purpose. This finding is of particular interest for its implications for prevention strategies among sex workers in the developing world.

Increased cell division but not thymic dysfunction rapidly affects the T-cell receptor excision circle content of the naive T cell population in HIV-1 infection

Recent thymic emigrants can be identified by T cell receptor excision circles (TRECs) formed during T-cell receptor rearrangement. Decreasing numbers of TRECs have been observed with aging and in human immunodeficiency virus (HIV)-1 infected individuals, suggesting thymic impairment. Here, we show that in healthy individuals, declining thymic output will affect the TREC content only when accompanied by naive T-cell division. The rapid decline in TRECs observed during HIV-1 infection and the increase following HAART are better explained not by thymic impairment, but by changes in peripheral T-cell division rates. Our data indicate that TREC content in healthy individuals is only indirectly related to thymic output, and in HIV-1 infection is mainly affected by immune activation.

Sexual behaviours, perception of risk of HIV infection, and factors associated with attending HIV post-test counselling in Ethiopia

OBJECTIVES

To describe sexual behaviours, perception of risk of HIV infection, and factors associated with attending HIV post-test counselling (PTC) among Ethiopian adults.

METHODS

Data on socio-demographic characteristics, knowledge of HIV infection, sexual history, medical examination, and HIV and syphilis serological status were compared, through uni- and multivariate analysis, in relation to attending PTC within 60 days of HIV testing.

RESULTS

Between February 1997 and June 1998, 751 factory workers were enrolled in a cohort study of HIV infection progression. Despite reporting high-risk sexual behaviours, mainly for males (64% of males and 6% of females had more than five sexual partners in their lifetime, 16% of males and 2% of females reported having had recent casual partners), and knowing that HIV is commonly transmitted heterosexually in Ethiopia (97% of answers being correct, both genders combined), only 17% of males and 2% of females acknowledged having had activities which had put them at risk of HIV infection. HIV prevalence was 12%, and did not differ by gender. Of all study participants, 327 (43.5%) returned for PTC within 60 days of HIV testing. PTC attendance did not differ by age, gender, or HIV serological status. Factors independently associated with PTC attendance in males were: good knowledge of HIV infection, [odds ratio (OR) = 1.661, belief that medical follow-up improves the course of HIV infection (OR = 2.02), history of genital symptoms (OR = 2.83), positive syphilis serology (OR = 2.62), recent weight loss (OR = 1.89), and, with a negative association, being a manual worker (OR = 0.40), and history of recent casual sexual relationships (OR = 0.35). In women, belief that HIV/AIDS can be cured (OR = 3.16), never having been married (OR = 5.02), having five or less children (OR = 2.16), having been raped (OR = 3.42), and having used health facilities in the past year (OR = 1.73) were all positively and independently associated with PTC attendance.

CONCLUSION

Study participants reported high-risk sexual behaviours, yet had a low perception of individual risk. Men attended for PTC because of their knowledge of HIV infection, their past sexual history or their current health status. Women attended for PTC because of their plans for the future, marriage and/or children, rather than their past sexual exposure. Only in cases of rape were they willing to learn of their HIV status.

Immunohematological reference ranges for adult Ethiopians

A cross-sectional survey was carried out with 485 healthy working adult Ethiopians who are participating in a cohort study on the progression of human immunodeficiency virus type 1 (HIV-1) infection to establish hematological reference ranges for adult HIV-negative Ethiopians. In addition, enumeration of absolute numbers and percentages of leukocyte subsets was performed for 142 randomly selected HIV-negative individuals. Immunological results were compared to those of 1,356 healthy HIV-negative Dutch blood donor controls. Immunohematological mean values, medians, and 95th percentile reference ranges were established. Mean values were as follows: leukocyte (WBC) counts, 6.1 x 10(9)/liter (both genders); erythrocyte counts, 5.1 x 10(12)/liter (males) and 4.5 x 10(12)/liter (females); hemoglobin, 16.1 (male) and 14.3 (female) g/dl; hematocrit, 48.3% (male) and 42.0% (female); platelets, 205 x 10(9)/liter (both genders); monocytes, 343/microl; granulocytes, 3, 057/microl; lymphocytes, 1,857/microl; CD4 T cells, 775/microl; CD8 T cells, 747/microl; CD4/CD8 T-cell ratio, 1.2; T cells, 1, 555/microl; B cells, 191/microl; and NK cells, 250/microl. The major conclusions follow. (i) The WBC and platelet values of healthy HIV-negative Ethiopians are lower than the adopted reference values of Ethiopia. (ii) The absolute CD4 T-cell counts of healthy HIV-negative Ethiopians are considerably lower than those of the Dutch controls, while the opposite is true for the absolute CD8 T-cell counts. This results in a significantly reduced CD4/CD8 T-cell ratio for healthy Ethiopians, compared to the ratio for Dutch controls.

Effectiveness of milk products in dietary management of lactose malabsorption

Eleven lactose malabsorbers were studied to compare the effectiveness of commercially available products recommended for dietary treatment of lactose malabsorption. One product, a commercial lactase preparation, is added to milk for lactose hydrolysis before consumption. The other is a commercial milk product containing lactose-hydrolyzing, nonpathogenic bacteria, Lactobacillus acidophilus. Both of these products are presently recommended for management of lactose malabsorption, although such recommendations have not been validated by controlled studies. Lactose malabsorption was determined by breath H2 analyses after subjects drank four different test doses on 4 different days. The first test dose was 480 ml of low fat milk; the second was 480 ml of milk treated with a commercial lactase preparation; the third was 480 ml of a commercial L. acidophilus-containing milk; and the fourth was 480 ml of the L. acidophilus-containing milk after 1 wk of gastrointestinal exposure to this commercial bacteria-containing milk. The mean breath H2 response to the lactase-treated milk was significantly lower (p less than 0.001) than the mean response to regular milk. However, the mean breath H2 response to either of the test doses of the L. acidophilus-containing milk were not significantly different than responses to regular milk. It is concluded that the lactase-treated milk reduces breath H2 responses and symptomatic discomfort from malabsorption while the L. acidophilus-containing milk does not.