HIV prevalence and risk factors in infants born to HIV positive mothers, measured by dried blood spot real-time PCR assay in Tigray, Northern Ethiopia

Magnitude and risk factors of mother-to-child transmission of HIV among HIV-exposed infants after Option B+ implementation in Ethiopia: a systematic review and meta-analysis

BACKGROUND

Mother-to-child transmission (MTCT) of the human immunodeficiency virus (HIV) remains a major public health challenge in Ethiopia. The objective of this review was to assess the pooled magnitude of MTCT of HIV and its risk factors among mother-infant pairs who initiated antiretroviral therapy (ART) after Option B+ in Ethiopia.

METHODS

A systematic search of literature from PubMed, Hinari, African Journals Online (AJOL), Science Direct, and Google Scholar databases was conducted from June 11, 2013 to August 1, 2023. The authors used the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines to guide the article selection process and reporting. Observational studies that reported the magnitude and/or risk factors on MTCT of HIV among mother-infant pairs who initiated ART after the implementation of Option B+ in Ethiopia were included. We applied a random-effect model meta-analysis to estimate the overall pooled magnitude and risk factors of MTCT of HIV. A funnel plot and Egger's regression test were employed to check publication bias, and heterogeneity was assessed using I2 statistics. The protocol was registered in the PROSPERO database with registration ID number CRD42022325938.

RESULT

Eighteen published articles on the magnitude of MTCT and 16 published articles on its risk factors were included in this review. The pooled magnitude of MTCT of HIV after the Option B+ program in Ethiopia was 4.05% (95% CI 3.09, 5.01). Mothers who delivered their infants at home [OR: 9.74; (95% CI: 6.89-13.77)], had not been on ART intervention [OR: 19.39; (95% CI: 3.91-96.18)], had poor adherence to ART [OR: 7.47; (95% CI: 3.40-16.45)], initiated ART during pregnancy [OR: 5.09; (95% CI: 1.73-14.97)], had WHO clinical stage 2 and above [OR: 4.95; (95% CI: 1.65-14.88]], had a CD4 count below 350 at enrolment [OR: 5.78; (95% CI: 1.97-16.98], had no or low male partner involvement [OR: 5.92; (95% CI: 3.61-9.71]] and whose partner was not on ART [OR: 8.08; (95% CI: 3.27-19.93]] had higher odds of transmitting HIV to their infants than their counterparts.

CONCLUSION

This review showed that the pooled magnitude of MTCT of HIV among mother-infant pairs who initiated ART after the Option B + program in Ethiopia is at the desired target of the WHO, which is less than 5% in breastfeeding women. Home delivery, lack of male partner involvement, advanced HIV-related disease, lack of PMTCT intervention, and poor ARV adherence were significant risk factors for MTCT of HIV in Ethiopia.

Effect of Dolutegravir-Based First-Line Antiretroviral Therapy on Mother-to-Child Transmission of HIV Among HIV-Exposed Infants in Ethiopia: a Before-and-After Study

Background

Currently, Dolutegravir (DTG)-based regimens are administered to women on Option B plus to prevent mother-to-child transmission (MTCT) of the virus. However, its effect on reducing MTCT of human immunodeficiency virus (HIV) among HIV-exposed infants over the previously used Efavirenz (EFV)-based regimen is unknown.

Objective

This study aimed to compare the effects of DTG-based and EFV-based regimens on the MTCT of HIV among HIV-exposed infants in Ethiopia.

Methods

An uncontrolled before-and-after study design was conducted among 958 mother-infant pairs (479 on EFV-based and 479 on DTG-based regimens) enrolled in the prevention of mother-to-child transmission (PMTCT) care from September 2015 to February 2023. The outcome variable was the HIV infection status among the exposed infants. A log-binomial model was employed, and the proportion was computed to compare the incidence of MTCT of HIV in both groups. The risk ratio (RR) with a 95% confidence interval (CI) was calculated to assess the predictor variables.

Results

Mothers on DTG-based regimens were approximately 44% (adjusted risk ratio (aRR): 0.56; 95% CI: 0.44, 0.70) less likely to transmit HIV to their infants than those on EFV-based regimens. In addition, poor or fair adherence to antiretroviral therapy (ART) (aRR: 5.82; 95% CI: 3.41, 9.93), home delivery (aRR: 3.61; 95% CI: 2.32, 5.62), mixed feeding practice (aRR: 1.83; 95% CI: 1.45, 2.3) and not receiving antiretroviral prophylaxis (aRR: 3.26; 95% CI: 1.6, 6.64) were found to increase the risk of MTCT of HIV infection, whereas older maternal age (aRR: 0.93; 95% CI: 0.9, 0.96) was a protective factor.

Conclusion

Mother-to-child transmission of HIV was less frequently observed in mother-infant pairs exposed to the DTG-based regimens as compared to those exposed to the EFV-based regimens. Thus, DTG-based first-line ART regimens supplementation should be sustained to achieve global and national targets for zero new infections in HIV-exposed infants.

Understanding the uptake and determinants of prevention of mother-to-child transmission of HIV services in East Africa: Mixed methods systematic review and meta-analysis

BACKGROUND

Prevention of mother-to-child transmission (PMTCT) of HIV service is conceptualized as a series of cascades that begins with all pregnant women and ends with the detection of a final HIV status in HIV-exposed infants (HEIs). A low rate of cascade completion by mothers' results in an increased risk of HIV transmission to their infants. Therefore, this review aimed to understand the uptake and determinants of key PMTCT services cascades in East Africa.

METHODS

We searched CINAHL, EMBASE, MEDLINE, Scopus, and AIM databases using a predetermined search strategy to identify studies published from January 2012 through to March 2022 on the uptake and determinants of PMTCT of HIV services. The quality of the included studies was assessed using the Mixed Methods Appraisal Tool. A random-effects model was used to obtain pooled estimates of (i) maternal HIV testing (ii) maternal ART initiation, (iii) infant ARV prophylaxis and (iv) early infant diagnosis (EID). Factors from quantitative studies were reviewed using a coding template based on the domains of the Andersen model (i.e., environmental, predisposing, enabling and need factors) and qualitative studies were reviewed using a thematic synthesis approach.

RESULTS

The searches yielded 2231 articles and we systematically reduced to 52 included studies. Forty quantitative, eight qualitative, and four mixed methods papers were located containing evidence on the uptake and determinants of PMTCT services. The pooled proportions of maternal HIV test and ART uptake in East Africa were 82.6% (95% CI: 75.6-88.0%) and 88.3% (95% CI: 78.5-93.9%). Similarly, the pooled estimates of infant ARV prophylaxis and EID uptake were 84.9% (95% CI: 80.7-88.3%) and 68.7% (95% CI: 57.6-78.0) respectively. Key factors identified were the place of residence, stigma, the age of women, the educational status of both parents, marital status, socioeconomic status, Knowledge about HIV/PMTCT, access to healthcare facilities, attitudes/perceived benefits towards PMTCT services, prior use of maternal and child health (MCH) services, and healthcare-related factors like resource scarcity and insufficient follow-up supervision.

CONCLUSION

Most of the identified factors were modifiable and should be considered when formulating policies and planning interventions. Hence, promoting women's education and economic empowerment, strengthening staff supervision, improving access to and integration with MCH services, and actively involving the community to reduce stigma are suggested. Engaging community health workers and expert mothers can also help to share the workload of healthcare providers because of the human resource shortage.

A Retrospective Study of Incidence and Predictors on Mother-to-Child Transmission of HIV among HIV-Exposed Infants in West Guji Zone, Southern Ethiopia

Background

The transmission of HIV from mother to child among HIV-positive infants is estimated to be higher than 20%, despite the fact that antiretroviral treatment is available for antenatal mothers with HIV. In Ethiopia, the prevalence of HIV transmission from mother to child among infants aged one and a half years is estimated to be approximately 15.7 percent.

Methods

A retrospective cohort analysis using a simple random sampling technique was incorporated among 422 HIV-exposed babies and their mothers who were randomly chosen and screened using OPD (outpatient card) from March 2019 to March 2021 in the general hospitals of West Guji zone, Oromia, Ethiopia. The data were coded and entered into EpiData version 4.6.1 and exported to SPSS version 23 for cleaning and analysis.

Result

The study revealed that at the end of follow-up, 3.8% of the HIV-exposed infants were found to be HIV positive. Poor adherence of infant for CPT (AOR: 5.6; 95% CI: 1.010–27.24), father not enrolled to ART (AOR: 4.4; 95% CI: 1.187–15.724), age of infants at enrollment >6 weeks (AOR: 4.5; 95% CI: 1.102–16.1), mother's enrollment to PMTCT during labor and delivery or after (AOR: 6.84; 95% CI: 1.316–42.743), and mothers on the WHO clinical stage mild or advanced (AOR: 3.6; 95% CI: 1.146–16.842) was found to be the most important significant predictors of mother-to-child transmission of HIV.

Conclusion

Several factors included in the study were the main predictors of mother-to-child transmission of HIV. The study concluded that there are some lacunae in the prevention of MTCT of HIV but that the incidence of MTCT of HIV was significantly lower in this part of the world.

Prevalence of HIV infection and associated factors among infants born to HIV-positive mothers in health institutions, northwest Ethiopia, 2021

Background:

Mother-to-child transmission of the HIV remains the main source of HIV infection in children. Targeting pregnant women attending antenatal care follow-up provides a unique opportunity for implementing prevention of mother-to-child transmission programs against HIV infection in newborn babies.

Objective:

The objective of this study was to assess the prevalence of HIV infection and associated factors among infants born to HIV-positive mothers in the prevention of mother-to-child transmission clinic in the Gondar city health institutions, Northwest Ethiopia, 2021.

Methods:

Documents were reviewed at the facility. Infants who had been exposed to HIV were enrolled in the study from 1 May–20 June 2021 prevention of mother-to-child transmission service in Gondar health institutions. To collect data from the charts, a structured data extraction tool was developed. The data were entered and analyzed with SPSS version 25 software. Both bivariate and multivariate logistic regression models were fitted to identify factors associated with HIV infection. The crude and adjusted odds ratios with a 95% confidence interval were calculated to determine the significance level.

Result:

The prevalence of HIV infection among infants born to HIV-positive mothers at the prevention of mother-to-child transmission level was found to be 8.1% (95% confidence interval = 7.3–12.9). Mixed infant feeding practice (adjusted odds ratio = 5.15, 95% confidence interval = 1.82–14.56), mothers’ lack of education (adjusted odds ratio = 3.43, 95% confidence interval = 2.26–5.0), absence of antenatal care follow-up (adjusted odds ratio = 1.82, 95% confidence interval = 1.17–4.02), and home delivery (adjusted odds ratio = 2.24, 95% confidence interval = 2.10–7.45) were statistically significantly associated with infants’ HIV infection.

Conclusion:

The prevalence of HIV infection in babies born to HIV-positive mothers was found to be high. Significant factors include mixed infant feeding practice, mothers’ lack of education, antenatal care follow-up, and home delivery. We also proposed that skilled delivery care and community education could reduce HIV transmission from mother to child.

Alarm Clock-Based Reminder for Improving Low Adherence on Option B Plus Antiretroviral Therapy Among HIV Positive Pregnant and Lactating Mothers in Northern Ethiopia

Background

Option B plus antiretroviral therapy (ART) is an approach used to eliminate new Human Immune Deficiency Virus (HIV) infections among infants. Considering the high adherence on Option B plus ART in HIV positive mothers is a crucial part in preventing mother-to-child transmission HIV. Therefore, this study was performed to assess the status of adherence and factors related to Option B plus ART.

Methods

A cross-sectional study design was conducted in Eastern zone of Tigrai Region from January to February 2017. Data were collected by using pre-tested structured interviewer-administered questionnaire from 350 participants selected using simple random sampling. Descriptive and binary logistic regression was done during analysis.

Results

The overall good adherence status of Option B plus ART among pregnant and lactating mothers was 67.3% [62.3–72.3%]. Attending formal education (AOR=2.78, 95% CI 1.52–5.07), traveling for <1 hour to reach health facility (AOR=2.03, 95% CI 1.19–3.44), (CD4) count <350 cells/mm3 (AOR=2.3, 95% CI 1.33–3.95), starting their Option B plus during pregnancy (AOR= 2.08, 95% CI 1.08–3.97), taking one pill per day (AOR=2.12, 95% CI 1.25–3.58), using a clock as a reminder (AOR=2.51, 95% CI 1.3–4.86), and having good male involvement (AOR=2.91, 95% CI 1.64–5.16) were associated with good level of adherence for Option B plus ART treatment.

Conclusion

Our study revealed that the level of good adherence is low compared with the national target. Therefore, addressing the low adherence of Option B plus ART requires a policy response, such as efforts to enhance male partner involvement and better service accessibility in Prevention of Mother-to-Child Transmission (PMTCT) program. Moreover, health care providers and policymakers need to maximaze their efforts on HIV positive pregnant and lactating mothers using a clock as a reminder.

Prevalence of vertical HIV infection and its risk factors among HIV exposed infants in East Africa: a systematic review and meta-analysis

Background

Human immunodeficiency virus (HIV) is one of the most important global health problems. More than one and half million of children are living with HIV in the world, and majority of them are found in sub-Saharan Africa. There are primary fragmented study findings, and no review was conducted with regard to vertical HIV infection in East Africa. Therefore, this review aimed to assess the prevalence of vertical HIV infection and its risk factors among HIV-exposed infants in East Africa.

Main body

Eligible studies were retrieved by relevant search terms in CINHAL, Pub-MED, Google Scholar, EMBASE, Web of Science, SCOPUS, Cochrane, African Journals Online databases, and Ethiopian University research repositories. Data were extracted with Microsoft Excel and analyzed with Stata version 11 software. The random effect model was used to estimate the pooled prevalence of vertical HIV infection in East Africa. The variation between studies was quantified with an I ² statistic test. Furthermore, sub-group and meta-regression analyses were done to identify the sources of heterogeneity between the studies. The publication bias was assessed by Egger test. This systematic review and meta-analysis have included a total of 33 research articles. The overall pooled prevalence of vertical HIV infection in East Africa was 7.68% with a 95% confidence interval [CI]: (6.23, 9.12) with a heterogeneity of I ² = 86.8 with a p value < 0.001. In subgroup analysis, the pooled prevalence of vertical HIV infection in cross-sectional studies was 6.58%, while in cohort studies were 9.37%. Mixed feeding, AOR = 6.22 (1.02, 11.41); home delivery, AOR = 2 (1.01, 3); mothers took ART less than 4 weeks, AOR = 1.92 (1.79, 2.06); and infants who have not received ARV prophylaxis, AOR = 2.02 (1.05, 2.98) were the associated factors for vertical HIV infection for exposed infants.

Conclusions

The pooled prevalence of the mother to child transmission of HIV is way more than the desired target of the World Health Organization, which is less than 5% in breastfeeding populations. Thus, strengthening the prevention of vertical HIV transmission, promotion of exclusive breastfeeding, timely initiation of ART prophylaxis for HIV exposed infants, encouragement of hospital delivery, and the start of ART at the time of diagnosis of every HIV-positive person may all reduce the transmission of vertical HIV infection.