Cold Chain Maintenance and Vaccine Stock Management Practices at Public Health Centers Providing Child Immunization Services in Jimma Zone, Oromia Regional State, Ethiopia: Multi-Centered, Mixed Method Approach

Pandemic-Proofing: Intercepting Zoonotic Spillover Events

Zoonotic spillover events pose a significant and growing threat to global health. By focusing on preventing these cross-species transmissions, we can significantly mitigate pandemic risks. This review aims to analyze the mechanisms of zoonotic spillover events, identify key risk factors, and propose evidence-based prevention strategies to reduce future pandemic threats. Through a comprehensive literature review and analysis of major databases including PubMed, Web of Science, and Scopus from 1960-2024, we examined documented spillover events, their outcomes, and intervention strategies. This article emphasizes that targeting the root cause-the spillover event itself-is key to averting future pandemics. By analyzing historical and contemporary outbreaks, we extract crucial insights into the dynamics of zoonotic transmission. Factors underlying these events include increased human-animal contact due to habitat encroachment, agricultural intensification, and wildlife trade. Climate change, global travel, and inadequate healthcare infrastructure exacerbate risks. The diversity of potential viral reservoirs and rapid viral evolution present major challenges for prediction and prevention. Solutions include enhancing surveillance of wildlife populations, improving biosecurity measures, investing in diagnostic capabilities, and promoting sustainable wildlife management. A "One Health" approach integrating human, animal, and environmental health is crucial. Predictive modelling, international cooperation, and public education are key strategies. Developing pre-exposure prophylactics and post-exposure treatments is essential for mitigating outbreaks. While obstacles remain, advances in genomics and ecological modelling offer hope. A proactive, comprehensive approach addressing the root causes of spillover events is vital for safeguarding global health against future pandemics.

Vaccine storage and stock management practices in Vihiga County, Kenya

Background

Effective vaccine management is crucial to maintain vaccine potency. To achieve this, elements, such as temperature management, stock management, infrastructure, cold chain equipment and waste management, need to be properly implemented. Therefore, this study was conducted to assess the vaccine storage and stock management practices in public health facilities within Vihiga County.

Methods

A descriptive cross-sectional design was used. Eighty-six public health facilities were selected and one staff involved in handling vaccines from each facility participated in the study. The study utilised survey questionnaires and observational checklists to collect data.

Results

All facilities visited use standard vaccine requisition forms for ordering and receiving vaccines and physical stock counts are done in all facilities. The majority of immunising healthcare workers knew how to condition icepacks 88.4%; however, 57.0% did not know all the heat-, cold- and light-sensitive vaccines. Status of vaccine equipment, knowledge of healthcare workers and stock management practices were positively associated with vaccine cold chain management at 52.8%.

Conclusion

Knowledge of vaccine handlers and stock management practices should be improved to enhance effective vaccine management. Besides, there is a need for the County Government of Vihiga to purchase sufficient WHO-recommended refrigerators.

A cross-sectional assessment of the effects of select training modalities on vaccine cold chain management

Background

Vaccines offer arguably the most cost-effective public health intervention. Vaccine supply chain management which is a critical building block faces many Human resources challenges mainly due to the special attributes of vaccines.

Objective

This study attempted to measure the effect of training on vaccine cold chain handler knowledge and practices.

Methods

A cross-sectional research design, using predominantly quantitative data collection techniques, was used. Facilities that have offered vaccination services for more than a year and report through the HMIS system were eligible for selection. Observation checklists and structured questionnaires were used. SPSS was used to analyse data.

Results

Vaccine cold chain management among the study group had an average score of 65.33% range (31-85%). The average knowledge score among the study respondents was 62.42% with a range (45-95%). The knowledge of respondents generally increases with an additional increase in the number of training modalities.

Conclusions

The status of VCCM is at about 65.33% below the target of 80% set by the EVM. The trainings have an effect on both knowledge of handlers and their practice especially when deployed in a multi-pronged design and thus these trainings need to be aligned to achieve synergy.

ABBREVIATIONS

CCE, Cold Chain Equipment; DHIS2, District Health Information Systems 2; DHO, District Health Officer; DPT, Diphtheria, Pertussis, Tetanus; DVS, District Vaccine Stores; EPI, Expanded Program for Immunisation; EVM, Effective Vaccine Management; FEFO, First Expiry First Out; GAVI, Global Alliance for Vaccines and Immunisation; HMIS, Health Information Management Systems; IRC, International Rescue Committee; KII, Key Informant Interview; LIAT, logistics indicator assessment tool; PATH, Program for Appropriate Technology in Health; PHC, Primary Health Care; QPPU, Quantification and Planning and Procurement Unit; SOPs, Standard Operating Procedures; SPSS, Statistical Package for Social Sciences; UNEPI, Uganda National Expanded Program for Immunisation; UNICEF, United Nations Children's Fund; VPD, Vaccine Preventable Diseases; VVM, Vaccine Vial Monitors; WHO, World Health Organisation.

Health professionals' knowledge on vaccine cold chain management and associated factors in Ethiopia: Systematic review and meta-analysis

BACKGROUND

Vaccines are playing a great role in prevention of many infectious diseases worldwide. Health professionals' knowledge towards vaccine cold chain management is an essential element of maintaining vaccine's potency at shelf and during transportation. Studies on health professionals' knowledge on vaccine cold chain management system and associated factors in Ethiopia have inconclusive findings. This systematic review and meta-analysis is aimed to produce the overall level of health professionals' knowledge on vaccine cold chain management system and to identify its associated factors in Ethiopia.

METHODS

Systematic review and meta-analysis was conducted on health professionals' knowledge on vaccine cold chain management in Ethiopia. It is registered under PROSPERO website with registration number CRD42023391627. Literature search was made on international data bases using medical subject heading and key words. Data were extracted using Microsoft excel and imported to STATA version 17 for analysis. Heterogeneity was checked using Cochrane Q test and I2 statistics. Weighted Inverse variance random effect model was used to estimate the pooled level of health professionals' knowledge on vaccine cold chain management. Publication bias was checked using funnel plot and using Egger's test.

RESULTS

A total of nine studies were included in the review. The pooled health professionals' good knowledge on vaccine cold chain management in Ethiopia is 49.92% with 95% CI (48.06-51.79). Having five years or more experience AOR 2.27 95% CI (1.72-2.99), being nurse AOR 3.03 95% CI (1.47-6.27), received on job training AOR 6.64 95% CI (4.60-9.57), EPI guideline available at facility AOR 2.46 95% CI (1.75.-3.48) are factors positively associated with health professionals' knowledge on vaccine cold chain management in Ethiopia.

CONCLUSION

The pooled prevalence of good knowledge on vaccine cold chain management among health professionals is much lower than the expected level. There is a need to plan on job trainings for all vaccine handlers and other health professionals supposed to work on vaccination program.

Assessment of vaccine management performance in health facilities of Mwanza Region, Tanzania: a cross-sectional study

BACKGROUND

Effective Vaccine Management (EVM) initiative provides the platform needed to monitor and assess the vaccine supply chain system to identify strengths and weaknesses of the system at all levels and enhance the development of continuous improvement plan to strengthen the system. This study was conducted to determine the vaccine management performance in Health Facilities of Mwanza Region, Tanzania.

METHODS

This was a descriptive cross-sectional study that was carried out in 102 health facilities providing immunization services from eights districts of Mwanza Region in Tanzania. The World Health Organization (WHO) effective vaccine management assessment tools were used to collected data. Both quantitative and qualitative (through key informant interviews) approaches were used. The quantitative data were analysed using the existing WHO criteria for analysing effective vaccine management assessment data, while deductive thematic analysis was used for the qualitative data.

RESULTS

The finding shows that the overall score for vaccine management performance was 53% which is below the WHO acceptable minimum score of 80%. None of the health facilities had reached the benchmark but only 67% had an average performance (> = 50-< 80%). The highest health facility score was 76% and the lowest being 27%. Among the categories assessed, the highest score was on information technology with 72%, while the lowest was on standard operating procedures with a score of 43%. The major challenges which contributed to low performance were lack of training, low knowledge about vaccine management practices, unavailability of standard operating procedures (SOPs), and limited financial resources to support operations for vaccine management practices. Skills gap, incomplete stock records and management, as well as low availability of SOPs were the key challenges reported that affected vaccine management practices.

CONCLUSIONS

Effective vaccine management performance was low across all districts under the study. Increasing personnel capacity and ensuring availability of resources to support operations were reported as key interventions in improving vaccine management practices. Hence, effectively working on continuous improvement plan with key highlighted actions is highly recommended to all actors from national level to sub-national level managers and healthcare workers as frontline vaccine handlers.

Vaccine cold chain management practice and associated factors among health professionals in Ethiopia: systematic review and meta-analysis

BACKGROUND

Administration of potent vaccine in a manner of well-maintained cold chain system is one of the public health focus areas in developing regions of the world. Health professionals' adherence towards good vaccine cold chain management practices is an important element to ensure potent vaccine reached to users. Studies on health professionals' practice on vaccine cold chain maintenance and associated factors in Ethiopia have shown wide variations. The aim of this systematic review and meta-analysis is to produce the overall/pooled prevalence of health professionals' good vaccine cold chain management practice and to identify its associated factors in Ethiopia.

METHODS

Systematic review and meta-analysis was conducted on vaccine cold chain management practice and associated factors among health professionals in Ethiopia. Literature search was made on international data bases using medical subject heading and key words. Data were extracted using Microsoft excel and imported to STATA version 17 for analysis. Heterogeneity was checked using Cochrane Q test and I² statistics. Weighted inverse variance random effect model was used to estimate the pooled level of good vaccine cold chain management practice among health professionals. Publication bias was checked using funnel plot and using Egger's test.

RESULTS

A total of ten studies were included in the review. The overall/pooled prevalence of good vaccine cold chain management practice in Ethiopia is 27.48% with 95% CI (25.70-29.26). Having good knowledge on vaccine cold chain management AOR 2.27 95% CI (1.72-2.99), and have received on-job training AOR 6.64 95% CI (4.60-9.57) are factors positively associated with vaccine cold chain management practice among health professionals in Ethiopia.

CONCLUSION

The overall/pooled prevalence of good vaccine cold chain management practice is much lower than the expected level. There is a need to plan on-job trainings for all vaccine handlers and other health professionals supposed to work on vaccination program.

Evaluation of vaccine storage and distribution practices in rural healthcare facilities in Kenya

BACKGROUND

Vaccines require cold chain storage conditions, and good distribution practices throughout the supply chain to maintain their quality and potency. However, in the last mile of the vaccines supply chain, these requirements may not be guaranteed resulting in reduced effectiveness which could lead to an upsurge in vaccine preventable morbidity and mortality. The aim of this research was to evaluate vaccine storage and distribution practices in the last mile of vaccine supply chain in Turkana County.

METHODS

A descriptive cross-sectional study was conducted from January 2022 to February 2022 across seven sub-counties in Turkana County, Kenya, to assess vaccine storage and distribution practices. The study sample size was 128 county health professionals across 4 hospitals, 9 health centers, and 115 dispensaries. The respondents were selected using simple random sampling within the facilities strata. Data were collected using a structured questionnaire, adapted, and adopted from a standardized WHO questionnaire on effective vaccines management and administered to one healthcare personnel working in the immunization supply chain per facility. Data were analyzed using excel and presented as percentages in table forms.

RESULTS

A total of 122 health care workers participated in the study. Most respondents (89%, n = 109) had utilized a vaccine forecasting sheet, but only 81% did have an established maximum-minimum level inventory control system. Many of the respondents had sufficient knowledge of ice pack conditioning although 72% had adequate vaccine carriers and ice packs. Only 67% of respondents had a complete set of twice-daily manual temperature records at the facility. Most refrigerators complied with the WHO specifications but only 80% of them had functional fridge-tags. The number of facilities that had a routine maintenance plan was below average while only 65% had an adequate contingency plan.

CONCLUSION

Rural health facilities have suboptimal supply of vaccine carriers and icepacks for effective storage and distribution of vaccines. In addition, some vaccine fridges lack functional fridge-tags for proper temperature monitoring. Routine maintenance and contingency plans remain a challenge to ensure optimal service delivery.

Adherence to WHO vaccine storage codes and vaccine cold chain management practices at primary healthcare facilities in Dalocha District of Silt'e Zone, Ethiopia

Background

The main elements of effective vaccine cold chain management at the immunization service delivery point are well-trained vaccine cold chain handlers, vaccine storage equipment, and appropriate vaccine management procedures. Vaccine cold chain handlers must have enough expertise to provide the correct vaccine at the right time, maintain vaccine potency, and minimize vaccination failures. The study assessed knowledge of vaccine cold chain handlers on vaccine cold chain management, adherence to the WHO vaccine storage codes and vaccine cold chain management practice at primary health facilities in Dalocha district of Silt'e zone.

Method

Institutional-based cross-sectional study was done at twenty-eight primary health facilities. One hundred forty primary health workers were drawn from four health centers and twenty-four health posts operating in Dalocha woreda of Silt'e zone, SNNPR, Ethiopia. A self-administered questionnaires and on-spot observation checklists were adapted from the WHO and WHO-UNICEF-effective vaccine management assessment tools to collect data from cold chain unit of the primary healthcare facilities. Data were entered to EPI data version 3.1; exported and analyzed using SPSS version 22. Statistical analysis was carried out to determine the level of knowledge, adherence to WHO cold chain management guideline and vaccine handling practice. The relationship that the knowledge of primary healthcare workers, primary healthcare workers training status, primary healthcare facilities' adherence to WHO vaccine storage codes, and length of work experience of primary health care workers have with the vaccine management practice were also explored

Result

Above Half (54%) of the respondents have satisfactory knowledge of vaccine cold chain management. One hundred (71.4%) vaccine cold chain handlers did point correctly to the recommended range of temperature (2°C -8°C) for vaccine storage. Around two-thirds (63.6%) of them were aware of the twice-daily temperature recordings. Nearly half, (46.2%) of primary healthcare facilities have experienced poor adherence to the WHO storage practice codes. Around three-fifths of the observed primary healthcare facilities have registered undesirable vaccine management practices. The primary healthcare workers who received training on vaccine cold chain management (χ2 = 0.058, p=0.015), served at primary health care facilities for more five years (χ2 =18.545, p≤0.001), shown good adherence to WHO vaccine storage code (χ2 =18.545, p≤0.001), have sufficient knowledge on vaccine cold chain management (χ2=4.210, p≤0.031) were all significantly associated with desirable vaccine cold chain management practice.

Conclusion

There is a gap in vaccine cold chain handlers’ knowledge about vaccine cold chain management and less than desirable adherence to WHO vaccine storage codes at primary healthcare facilities in Dalocha district. The majority of the observed primary health facilities have registered poor vaccine management practices. Everyone who has a stake in the cold chain management of vaccines should do their share, individually and collectively, to guarantee that everyone reaps the benefits of an effective cold chain.

Vaccine management practices among healthcare workers in Morogoro, Tanzania: a cross-sectional study

BACKGROUND

Effective vaccine management is essential to maintain the quality of vaccines, minimise wastages, and prevent missed opportunities for vaccination at service delivery points.

OBJECTIVES

This study aims to assess vaccine management practices among vaccinators at health facilities in the Morogoro region, Tanzania.

METHODOLOGY

A descriptive cross-sectional study design involved health workers from 77 health facilities offering vaccination services. The study population consisted of vaccine handlers and vaccinators working in public health facilities in the Morogoro region. The vaccine management practices were assessed using data collected from ledgers and the Vaccine Information Management System (VIMS). The temperature records were downloaded from the Fridge-tag® 2 and Coldtrace5 devices.

RESULTS

The findings indicated that 65 (84%) health facilities had functional refrigerators and are using power from 26 (34%), 28 (36%), and 23 (30%) of grid electricity, solar, and Liquefied Petroleum Gas (LPG), respectively. Besides, 27 (35%) health facilities have an alternative energy source as a backup. In general, healthcare workers had a good knowledge of cold chain management, including the World Health Organization recommended storage temperatures for vaccines. Furthermore, vaccine stockout was found in 12 (15.6%) health facilities for at least one antigen and 4 (5.1%) health facilities for all five antigens under observation. This current study also revealed that the average calculated vaccine wastage rates for DTP, Measles-Rubella and Rotavirus vaccines were 7%, 19%, and 15%, respectively. More than half of health workers did not perform monthly temperature data reviews. In addition, poor performance led to high wastage rates, including the Rotavirus vaccines, and a change in VVM to discard points. Finally, a small number of 5 (6.5%) health facilities consecutively reported temperature exposure beyond + 8 Celsius (between 5.9 and 281 h).

CONCLUSIONS

Healthcare workers' vaccine and cold chain management knowledge were good for temperature data reading and documentation. However, the practices were poor for some health facilities. The gaps observed in this study inform health managers and policymakers toward establishing interventions to improve health workers' knowledge and practice, including mentorships, supervision, and training to guarantee that each child in all communities reaps the benefits of immunisation services.