Challenges of cold chain quality for routine EPI in south-west Burkina-Faso: An assessment using automated temperature recording devices

BACKGROUND

Abnormal temperatures are a major issue for vaccines within the Expanded Program of Immunization in tropical climates. Prolonged exposure to temperatures outside the standard +2 °C/+8 °C range can impact vaccine potency.

METHODS

The current study used automatic temperature recording devices (Testostore 171-1©) to monitor cold chain in remote areas of Western Burkina Faso. A series of 25 randomly selected health centers representing 33% of the existing 176 EPI facilities in Western Burkina Faso were prospectively assessed for eight months in 2015. Automatic measurements were compared to routine temperature loggers and vaccine vial monitors (VVM).

RESULTS

The median age for all refrigerators was 9 years with 10/25 (42%) older than 10 years. Adverse temperatures were recorded in 20/24 (83%) refrigerators and ranged from -18.5 °C to +34.2 °C with 12,958/128,905 (10%) abnormal hourly records below +2 °C and 7357/128,905 (5.7%) above +8 °C. Time of day significantly affected the rate of temperature excursions, with higher rates from 00 am to 06 am (p < 0.001) for low temperatures and 10-12 am (p < 0.001) and 13-16 pm (p < 0.001) for high temperatures. Abnormal temperatures lasted from 1 h to 24 h below +2 °C and 13-24 h above +8 °C. Standard manual registers reported only 182/2761 (7%) inadequate temperatures and VVM color change detected only 133/2465 (5%) disruptions. Reliability of the refrigerators ranged from 48% to 98.7% with a median of 70%. Risk factors for excursions were old age of the refrigerators, the months of April and May, hours of high activity during the day, and health staff-associated factors such as inappropriate actions or insufficient knowledge.

CONCLUSION

Important cold chain reliability issues reported in the current study in Western Burkina Faso raise concern about vaccine potency. In the absence of systematic renewal of the cold chain infrastructure or improved staff training and monitoring, antibody response assessment is recommended to study levels of effective immunization coverage.

[Evaluation of the Practice of Caesarean Section According to Robson's Classification in a Health District of Ouagadougou, Burkina Faso]

The control of the caesarean rate is nowadays an important concern for the obstetric world, the priority being to make every effort to practice a caesarean in all the women who need it only instead of reaching a specific rate. The purpose of the present study was to apply the Robson classification to the evaluation of the practice of caesarean section at the maternity of the Bogodogo District Hospital. It turned to be an analytical cross-sectional study which was carried out from January 1st, 2013 till December 31^st, 2015. The information sources used included the computer base of caesarean sections, the delivery records, the operating room records, the delivery hall and the monthly activity reports. The overall hospital frequency of caesarean section was 33.3%. The rate of caesarean section expected during the same period according to the C-Model was 9.7%. Patients in groups 5 (with a scar uterus) and 6 (nulliparous with siege presentation) of the Robson classification had all a caesarean section and contributed to the overall rate of caesarean for 30 and 8.6% respectively. Low-risk women (groups 1, 2, 3 and 4) had a relative contribution of 31.3% to the overall rate of caesarean section. Improvement of the antenatal assessment of the prognosis of childbirth, particularly in the case of uterine scar or siege presentation, improvement of the quality of the supervision of the delivery work and the fight against prematurity will help to control the rate of caesarean section at the Bogodogo District Hospital.

Assessment of the Virulence Spectrum and Its Association with Genetic Diversity in Magnaporthe oryzae Populations from Sub-Saharan Africa

A collection of 122 isolates of Magnaporthe oryzae, from nine sub-Saharan African countries, was assessed for virulence diversity and genetic relatedness. The virulence spectrum was assessed by pathotype analysis with a panel of 43 rice genotypes consisting of differential lines carrying 24 blast resistance genes (R-genes), contemporary African rice cultivars, and susceptible checks. The virulence spectrum among isolates ranged from 5 to 80%. Five isolates were avirulent to the entire rice panel, while two isolates were virulent to ∼75% of the panel. Overall, cultivar 75-1-127, the Pi9 R-gene donor, was resistant to all isolates (100%), followed by four African rice cultivars (AR105, NERICA 15, 96%; NERICA 4, 91%; and F6-36, 90%). Genetic relatedness of isolates was assessed by single nucleotide polymorphisms derived from genotyping-by-sequencing and by vegetative compatibility tests. Phylogenetic analysis of SNPs of a subset of isolates (n = 78) revealed seven distinct clades that differed in virulence. Principal component analysis showed isolates from East Africa were genetically distinct from those from West Africa. Vegetative compatibility tests of a subset of isolates (n = 65) showed no common groups among countries. This study shows that blast disease could be controlled by pyramiding of Pi9 together with other promising R-genes into rice cultivars that are adapted to East and West African regions.

[Epidemiology of neonatal surgical emergencies in Ouagadougou]

OBJECTIVE

The purpose of this study was to determine the rate of neonatal surgery emergencies and to highlight the main causes and difficulties related to better handling of these emergencies.

PATIENTS AND METHODS

We conducted a 1-year descriptive prospective study from September 2009 to September 2010 based on 102 cases collected. At admission, we studied the patients' age, the pathologies encountered, the related malformations, the terms for better management, and prognosis.

FINDINGS

In 1 year, we registered 102 cases of neonatal surgical emergencies affecting the digestive tract (63.7%), the anterior side of the abdomen (24.5%), trauma (6.7%), and tumors (2%). Males comprised 60.8% of the cases. The sex-ratio was 1.55. The frequency of such cases was 3.94%. The average age of patients was 5 days with the 0- to 5-day-old age group presenting most frequently. The average hospitalization lasted 2.75 days and the admission method was the reference in 75.5%. Congenital pathology accounted for 95.5% of cases with anorectal malformations (ARM) (35; 95%) and omphaloceles (28.1%). Hirschsprung disease was the main cause of bowel obstruction other than ARM (50%). The average time to surgery was about 2.54 days. The overall mortality of neonatal surgical emergencies was 30.3% and postoperative mortality 32.35%. The late consultation, poverty, a shortage of qualified staff, prematurity, low birth weight, congenital disease, and related malformations were the leading factors of a poor prognosis. Acquisition of effective technical means, staff training, measures to combat poverty, and better prenatal care would improve the management of neonatal surgical emergencies.

CONCLUSION

Neonatal surgical emergencies include conditions that require immediate and adequate support. The continuous training of healthcare workers at all levels in the detection of neonatal emergencies and equipping healthcare facilities are an absolute necessity to provide better management and reduce the mortality rate.

Child abdominal tumour in tropical context: think about schistosomiasis!

Schistosomiasis presenting as an abdominal mass with chronic pain in a child is not common. This report presents case of child presenting with schistosomiasis presenting as an abdominal mass with chronic pain. Abdominal ultrasonography did not particularly contribute to definitive pre-operative diagnosis. However, pathological examination of surgical specimen confirmed Schistosoma mansoni eggs in the biospy. A decrease in the mass volume was noticed under medical treatment (Biltricide). The aim of this report was to intimate clinicians on possible abdominal schistosomiasis as differential diagnosis of childhood abdominal mass. This is a clarion call for a high index of suspicion of childhood abdominal schistosomiasis in children presenting with abdominal mass in a tropical setting.

[Urachal cyst: contribution of ultrasound (about a case at Sourou Sanou Sobo-Dioulasso university hospital)]

Urachal cyst is difficult to diagnose and is a rare malformation and the authors report a case in a 10-month old boy. The malformation was associated with posterior urethral valve and simple surgical treatment was successful. The authors emphasize the contribution of perineal ultrasound in the diagnosis of associated posterior urethral valves.

Determinants of long-lasting insecticidal net use in Burkina Faso after a mass distribution in the Diébougou health district

BACKGROUND

In 2009, a mass distribution of long-lasting insecticidal nets (LLINs) was conducted in an experimental site of the Diébougou health district. Carried out 1year after the distribution, this study aimed to determine the presence of LLINs in households, to determine the LLIN use rate, and thirdly, to identify key factors associated with LLIN use in households.

METHODS

We conducted a cross-sectional descriptive and analytical study, which covered the entire Diébougou health district. The study population consisted of households in the district. The statistical unit was the household head, or if absent his designated representative. For the selection of households to be studied, we considered the health centers and their geographic accessibility. We thus defined three zones: an area within 5 km of health centers, the area between 5 and 10 km away, and the area beyond 10 km. In each area, we randomly selected 20 households, totaling 60 households in the area of each health center, giving a sample of 840 households to be surveyed. We selected 60 households per health center in accordance with the time and financial resources allocated to data collection. The data were analyzed using the Epi Info 3.5.1 software package. The Chi square test was used to investigate the association between the dependent and independent variables with statistical significance set at P<0.05. When an association was demonstrated, the relative risk (RR) was calculated with the 95% confidence interval.

RESULTS

A total of 822 households (97.8%) were surveyed, households inhabited by 6379 people including 1175 (11.4%) children under 5 years of age and 158 (2.5%) pregnant women. The overall use of LLINs was 76.5%. This rate was 81.7% in children under 5 years and 57.6% among pregnant women. Factors influencing the use of LLINs were the implementation of a communication plan by health actors (RR=2.42 [2.03-2.83]), the social position of the household head (RR=1.62 [1.43-1.83]), the marital status of the household head (RR=1.41 [1.33-1.49]), the number of persons per room (RR=1.39 [1.08-1.78]), the religion of household head (RR=1.21 [1.15-1.27]), the level of education of the household head (RR=1.15 [1.06-1.24]), and the number of IECs (information, education, communication) sessions followed by the household (RR=1.14 [1.08-1.20]).

CONCLUSION

The results of this study provide guidance on measures to ensure the success of the mass distribution of LLINs to the entire country.

[Diagnostic problems of expansive intracranial process in HIV infected patients of the Bobo-Dioulasso Central Hospital (Burkina Faso)]

In HIV infection, cerebral focal lesions are relatively frequent and raise many kinds of diagnostic problems. In tropical practice, neuroradiology is scarcely available and necropsy is still not developed. Therefore, diagnosis of intracerebral masses among patients is not easily performed. We examined a total of 72 patients who presented over a 3-year period. Patients were allocated to presumed diagnostic categories of toxoplasma encephalitis (TE), primary central nervous system lymphoma (PCNSL) or progressive multifocal leukoencephalopathy (PML), based on clinical and therapeutic criteria. In an internal medicine ward, we examined 72 suspected cases of intracerebral masses in a sample of 43 males (60%) and 29 females (40%). The average age was 38 years with extremes ranging from 21 to 72 years. Because of diagnostic problems, the presumption of a TE has been retained in 54 cases (75% of the sample) owing to the efficiency of the treatment of antitoxoplasmic proof. As for the other intracerebral masses, despite insufficient diagnostic means, the assumption of PCNSL was made for 8 cases and PML for 6 cases on the basis of evolutional criteria. In 4 cases, no diagnosis could be retained because of insufficient diagnostic means and treatment failure. Since brain tomodensitometry and brain biopsy are not available, treatment of toxoplasmosis has to be systematically set up whenever there is a presumption of intracerebral masses among patients with HIV infection. It is only in case of failure of this treatment that other hypotheses can be contemplated, especially as they are not entirely reliable.

[Toxoplasma serology in HIV infected patients and suspected cerebral toxoplasmosis at the Central Hospital of Bobo-Dioulasso (Burkina Faso)]

A study was conducted in the Internal Medicine unit of Bobo-Dioulasso Hospital. Of the 1828 HIV positive patients admitted in medical wards, 268 presented neurological symptoms. 25.4% had positive Toxoplasma gondii serology. Encephalitis was associated with 12.5% of this latter group and intracranial hypertension with focal neurological defects affected a further 47.5% of them. Presumptive treatment of toxoplasmosis led to significant clinical improvement in 60% of cases. Toxoplasma gondii serology should be part of the standard check-up for every HIV-infected patient, and toxoplasmosis chemoprophylaxis should be given to those with positive toxoplasma serology. Presumptive therapy of toxoplasmosis should be started for all HIV positive patients with focal neurological manifestations in the absence of a cerebral scanner.

[Salivary gland tumors. Apropos of 48 surgical cases]

The interest of tumors of salivary gland has increased according to the nosology, diagnosis and therapeutic aspects. This study object to appreciate the frequency of this pathology at the ENT Department of the University Hospital Center of Ouagadougou and to report our experience in their diagnostic and therapeutic management. We have collected 48 cases, representing 2% of the department surgery activity and 7% of the tumors operated between 1985 and 1996. This report has concerned 32 parotid tumors (66.7%), 10 submaxillary tumors (20.8%), 6 minor gland tumors (12.5%). This series was composed of 28 women and 20 men with an average age of 41 years. Diagnosis management was based on clinical, radiologic and echographic examination. The correlation between preoperative and histological diagnosis was correct in 88.7% cases. Benign tumors represented 83.3% of the cases with essentially pleomorphic adenomas, and the malignant tumors 16.7% cases. Post operative evolution was simple in 85.4% cases. After 3 years, local recurrence occurred in 4 cases. The prognosis of malignant tumors has been unsatisfactory: the survival rate at 3 years has been 20%.