Neural tube defects: Prevalence, mortality, and maternal characteristics in two departmental hospitals in the northwestern region of Nicaragua, 2006-2018.

BACKGROUND: Congenital anomalies are the fifth most common cause of neonatal mortality in Nicaragua, and neural tube defects (NTDs) are the most common of all cases of lethality associated with a birth defect. Prevalence and mortality estimates are needed to propose effective intervention strategies that prevent NTDs over time. METHODS: A cross-sectional study was carried out in northwestern Nicaragua from January 2006 to December 2018. All cases of NTDs (anencephaly, spina bifida, and encephalocele) were registered in hospital surveillance systems, and the medical histories of the mothers and newborns were reviewed. Prevalence was calculated by considering the number of live births and stillbirths older than 20 weeks of gestation with NTDs, divided by the total number of live births and stillbirths in each study year. Neonatal mortality rate (NMR) for NTD, and case fatality for spina bifida was calculated. RESULTS: Two hundred fifty cases of NTDs were identified from 178,498 deliveries (177,316 live births and 1,182 stillbirths). The prevalence of NTDs during this time period was 14.01 (95% CI: 12.27-15.74) per 10,000 births. The prevalence of spina bifida (n = 140), anencephaly (n = 97), and encephalocele (n = 13) was 7.84, (95% CI: 6.54-9.14), 5.43 (95% CI: 4.30-6.45), and 0.73 (95% CI: 0.33-1.12) per 10,000 births, respectively. Mothers with fetus or newborns affected with NTDs did not use folic acid prior to conception, and 11% experienced periods of hyperthermia during the first trimester of pregnancy. NMR for NTDs was 0.55 per 1.000 livebirths. Case fatality for all NTDs and for spina bifida were 55% and 18%, respectively. CONCLUSION: The prevalence and mortality of NTDs in the northwestern region of Nicaragua present peaks and troughs during the study period. Spina bifida was the most frequent type of NTD. We believe that these findings could be of use by health policy makers to strengthen the primary prevention of NTDs in the region through the monitoring of the food fortification policy and folic acid supplementation to women of childbearing age. Additional etiologic studies of NTDs should be considered to identify additional prevention measures.

Antibody Epitopes Identified in Critical Regions of Dengue Virus Nonstructural 1 Protein in Mouse Vaccination and Natural Human Infections.

Dengue is a global public health problem and is caused by four dengue virus (DENV) serotypes (DENV1-4). A major challenge in dengue vaccine development is that cross-reactive anti-DENV Abs can be protective or potentially increase disease via Ab-dependent enhancement. DENV nonstructural protein 1 (NS1) has long been considered a vaccine candidate as it avoids Ab-dependent enhancement. In this study, we evaluated survival to challenge in a lethal DENV vascular leak model in mice immunized with NS1 combined with aluminum and magnesium hydroxide, monophosphoryl lipid A + AddaVax, or Sigma adjuvant system+CpG DNA, compared with mice infected with a sublethal dose of DENV2 and mice immunized with OVA (negative control). We characterized Ab responses to DENV1, 2, and 3 NS1 using an Ag microarray tiled with 20-mer peptides overlapping by 15 aa and identified five regions of DENV NS1 with significant levels of Ab reactivity in the NS1 + monophosphoryl lipid A + AddaVax group. Additionally, we profiled the Ab responses to NS1 of humans naturally infected with DENV2 or DENV3 in serum samples from Nicaragua collected at acute, convalescent, and 12-mo timepoints. One region in the wing domain of NS1 was immunodominant in both mouse vaccination and human infection studies, and two regions were identified only in NS1-immunized mice; thus, vaccination can generate Abs to regions that are not targeted in natural infection and could provide additional protection against lethal DENV infection. Overall, we identified a small number of immunodominant regions, which were in functionally important locations on the DENV NS1 protein and are potential correlates of protection.

Consumption of highly processed snacks, sugar-sweetened beverages and child feeding practices in a rural area of Nicaragua.

Appropriate feeding behaviours are important for child growth and development. In societies undergoing nutrition transition, new food items are introduced that may be unfavourable for child health. Set in rural Nicaragua, the aim of this study was to describe the infant and young child feeding (IYCF) practices as well as the consumption of highly processed snack foods (HP snacks) and sugar-sweetened beverages (SSBs). All households with at least one child 0- to 35-month-old (n = 1371) were visited to collect information on current IYCF practices in the youngest child as well as consumption of SSBs and HP snacks. Breastfeeding was dominant (98%) among 0- to 1-month-olds and continued to be prevalent (60%) in the second year, while only 34% of the 0- to 5-month-olds were exclusively breastfed. Complementary feeding practices were deemed acceptable for only 59% of the 6- to 11-month-old infants, with low dietary diversity reported for 50% and inadequate meal frequency reported for 30%. Consumption of HP snacks and SSBs was frequent and started early; among 6- to 8-month-olds, 42% and 32% had consumed HP snacks and SSBs, respectively. The difference between the observed IYCF behaviours and World Health Organization recommendations raises concern of increased risk of infections and insufficient intake of micronutrients that may impair linear growth. The concurrent high consumption of SSBs and HP snacks may increase the risk of displacing the recommended feeding behaviours. To promote immediate and long-term health, growth and development, there is a need to both promote recommended IYCF practices as well as discourage unfavourable feeding behaviours.

Cost Effectiveness of Childhood Cochlear Implantation and Deaf Education in Nicaragua: A Disability Adjusted Life Year Model.

INTRODUCTION: Cochlear implantation (CI) is a common intervention for severe-to-profound hearing loss in high-income countries, but is not commonly available to children in low resource environments. Owing in part to the device costs, CI has been assumed to be less economical than deaf education for low resource countries. The purpose of this study is to compare the cost effectiveness of the two interventions for children with severe-to-profound sensorineural hearing loss (SNHL) in a model using disability adjusted life years (DALYs). METHODS: Cost estimates were derived from published data, expert opinion, and known costs of services in Nicaragua. Individual costs and lifetime DALY estimates with a 3% discounting rate were applied to both two interventions. Sensitivity analysis was implemented to evaluate the effect on the discounted cost of five key components: implant cost, audiology salary, speech therapy salary, number of children implanted per year, and device failure probability. RESULTS: The costs per DALY averted are $5,898 and $5,529 for CI and deaf education, respectively. Using standards set by the WHO, both interventions are cost effective. Sensitivity analysis shows that when all costs set to maximum estimates, CI is still cost effective. CONCLUSION: Using a conservative DALY analysis, both CI and deaf education are cost-effective treatment alternatives for severe-to-profound SNHL. CI intervention costs are not only influenced by the initial surgery and device costs but also by rehabilitation costs and the lifetime maintenance, device replacement, and battery costs. The major CI cost differences in this low resource setting were increased initial training and infrastructure costs, but lower medical personnel and surgery costs.

Association of elevated α1-acid glycoprotein (AGP) and the prevalence of anemia in Nicaraguan preschool children.

BACKGROUND: Anemia status is frequently assessed in cross-sectional surveys. Recently, the assessment of acute phase proteins (APPs) has become more common, primarily for iron and vitamin A biomarkers. Although the so-called "anemia of infection" has been known for years, the relationship between APPs and anemia has been infrequently presented. OBJECTIVE: To assess the relationship between elevated α1-acidglycoprotein (AGP) and the prevalence of anemia among preschool children. METHODS: A nationally representative household-based cross-sectional survey was conducted in 2003-05 in Nicaragua. Blood samples were collected from preschool children 6 to 59.9 months of age and tested for hemoglobin and AGP. Data were also obtained on sex, weight, height, use of iron supplements, maternal education, and urban or rural status. RESULTS: Among the 1420 children assessed, the overall prevalence of anemia was 20.2% and the prevalence of elevated AGP was 24.0%. Children with elevated AGP had an anemia prevalence of 27.9%, compared with 17.8% among those with a normal AGP, for a crude prevalence odds ratio (POR) of 1.8 (p = .010). Accounting for age, maternal educational level, and year of survey using logistic regression, the adjusted POR for the association between elevated AGP and anemia was 1.5 (p = .053). CONCLUSIONS: Children in this survey with an elevated AGP had a higher prevalence of anemia, although after controlling for covariates the p-value did not indicate a statistically significant difference (p = .053). It may be helpful to account for APPs, when this information is available, for purposes of comparing anemia prevalence across populations or within a population over time.

Maternity waiting homes and institutional birth in Nicaragua: policy options and strategic implications.

With the aim of promoting institutional births and reducing the high maternal and child mortality rates in rural and poor zones, the government of Nicaragua is supporting the creation of maternity waiting homes. This study analyzes that strategy and examines the factors associated with the use of maternity waiting homes and institutional birth. To that end, we apply a quantitative approach, by means of an econometric analysis of the data extracted from surveys conducted in 2006 on a sample of women and parteras or traditional birth attendants, as well as a qualitative approach based on interviews with key informants. Results indicate that although the operation of the maternity waiting homes is usually satisfactory, there is still room for improvement along the following lines: (i) disseminating information about the homes to both women and men, as the latter frequently decide the course of women's healthcare, and to parteras, who can play an important role in referring women; (ii) strengthening the postpartum care; (iii) ensuring financial sustainability by obtaining regular financial support from the government to complement contributions from the community; and (iv) strengthening the local management and involvement of the regional government. These measures might be useful for health policy makers in Nicaragua and in other developing countries that are considering this strategy.

Evaluación de la intervención terapéutica realizada en un centro de recuperación nutricional infantil de Nicaragua / Assessment of the intervention in a therapeutic feeding center for children in Nicaragua

Introducción: La desnutrición infantil conlleva una elevada morbimortalidad a nivel mundial. Los centros de recuperación nutricional son fundamentales en el tratamiento de los niños desnutridos. Objetivo: Evaluar la efectividad de la intervención terapéutica realizada en menores de 5 años con desnutrición aguda en un Centro de Recuperación Nutricional. Métodos: Se realizó un estudio retrospectivo descriptivo mediante revisión de historias clínicas de menores de 5 años ingresados en el Centro de Recuperación Nutricional Infantil de Matagalpa, Nicaragua, entre Enero de 2006 y Julio de 2010. Resultados: La mediana de edad al ingreso fue de 17,2 meses (p25:10,7-p75:27,2), y la de estancia en el centro de 92 días (p25:61,5-p75:134,5). El grado de desnutrición aguda al ingreso fue: grave en el 45% de niños, moderado en el 24% y con riesgo de desnutrición en el 31%. El 86% de los niños al alta presentaba una nutrición correcta. La mediana de porcentaje de ganancia ponderal en el primer mes de estancia fue del 15% (p25:12,6-p75:17,4). La mediana de gramos ganados/kg/día fue de 3,7 (p25:2,6-p75:5,4), siendo mayor en menores de 6 meses (4,6 g/kg/día; p25:4,3-p75: 7,5). La tasa de niños curados fue del 87,5%, la tasa de fallecidos 0% y la tasa de abandonos 9%. Discusión: El centro evaluado funciona correctamente, y supera los indicadores de calidad recomendados internacionalmente. Sin embargo, quedan lejos las recomendaciones de una estancia promedio de 1-2 meses y de una ganancia ponderal promedio de 8 g/kg/día. Por tanto, el Centro de Recuperación Nutricional realiza una intervención efectiva, pero no eficiente (AU)

Introduction: Child malnutrition carries a high morbimortality worldwide. Therapeutic feeding centers are essential in the treatment of malnourished children. 
Objective: To evaluate the effectiveness of the therapeutic intervention in under-5 undernourished children in a Therapeutic Feeding Center. Methods: A retrospective descriptive research was made through the revision of the clinical histories of children under 5 years that entered the Nutritional Recovery Center for Children in Matagalpa, Nicaragua, from January 2006 to July 2010. Results: Median age at admission was 17.2 months (p25:10.7-p75:27.2) and median stay in the center was 92 days (p25:61.5-p75:134.5). Prevalence of patients with severe acute malnutrition was 45%, moderate acute malnutrition 24% and risk for malnutrition 31%. At discharge 86% of patients were properly nourished. Median weight gain percentage after the first month in the center was 15% (p25:12.6-p75:17.4). Median weight gain was 3.7 g/kg/day (p25:2.6-p75:5.4), being higher in children under 6 months (4.6 g/kg/day; p25:4.3-p75:7.5). Cured rate in the center was 87.5%, being the death rate 0% and the abandonment rate 9%. Discussion: The center evaluated works adequately, and fulfills the internationally recommended quality indicators. However, recommended average stay of 1-2 months and average weight gain of 8 g/kg/day are far of being fulfilled. Therefore, the Nutritional Recovery Center performs an effective intervention, but it's not efficient enough (AU)

[Assessment of the intervention in a therapeutic feeding center for children in Nicaragua]. / Evaluación de la intervención terapéutica realizada en un centro de recuperación nutricional infantil de Nicaragua.

INTRODUCTION: Child malnutrition carries a high morbimortality worldwide. Therapeutic feeding centers are essential in the treatment of malnourished children. OBJECTIVE: To evaluate the effectiveness of the therapeutic intervention in under-5 undernourished children in a Therapeutic Feeding Center. METHODS: A retrospective descriptive research was made through the revision of the clinical histories of children under 5 years that entered the Nutritional Recovery Center for Children in Matagalpa, Nicaragua, from January 2006 to July 2010. RESULTS: Median age at admission was 17.2 months (p25:10.7-p75:27.2) and median stay in the center was 92 days (p25:61.5-p75:134.5). Prevalence of patients with severe acute malnutrition was 45%, moderate acute malnutrition 24% and risk for malnutrition 31%. At discharge 86% of patients were properly nourished. Median weight gain percentage after the first month in the center was 15% (p25:12.6-p75:17.4). Median weight gain was 3.7 g/kg/day (p25:2.6-p75:5.4), being higher in children under 6 months (4.6 g/kg/day; p25:4.3-p75:7.5). Cured rate in the center was 87.5%, being the death rate 0% and the abandonment rate 9%. DISCUSSION: The center evaluated works adequately, and fulfills the internationally recommended quality indicators. However, recommended average stay of 1-2 months and average weight gain of 8 g/kg/day are far of being fulfilled. Therefore, the Nutritional Recovery Center performs an effective intervention, but it's not efficient enough.

Increasing resistance in community-acquired urinary tract infections in Latin America, five years after the implementation of national therapeutic guidelines.

BACKGROUND: The worldwide increasing resistance to antibiotics has complicated antimicrobial treatment of urinary tract infections (UTIs), especially in Latin America. This study aimed to report the present etiology and antimicrobial susceptibility of UTIs, and the effects of the national guidelines for UTIs introduced in 2003. METHODS: Urine samples were collected from 304 patients with a clinical suspicion of UTI at the university hospital and primary health centers of León, Nicaragua. When bacterial growth was reported, antimicrobial susceptibility tests for nine frequently used antibiotics were performed. RESULTS: Ninety-one (29.9%) patients had a positive urine culture. The most frequently isolated microorganisms were Escherichia coli (n=44), Serratia spp (n=11), and Escherichia fergusonii (n=10). High resistance rates were observed in E. coli to ampicillin (61.4%), cefalothin (45.5%), trimethoprim-sulfamethoxazole (38.6%), ciprofloxacin (31.8%), and ceftriaxone (20.5%). Amikacin and nitrofurantoin were the only drugs to which >90% of E. coli were susceptible. E. fergusonii and Serratia spp showed comparable high resistance patterns. Thirteen strains (29.5%) of E. coli were suspected to produce extended-spectrum beta-lactamase (ESBL). CONCLUSIONS: Resistance rates in community-acquired UTIs in Nicaragua are increasing. The introduction of therapeutic guidelines with ceftriaxone recommended for upper UTIs and nitrofurantoin for lower UTIs, has led to increasing resistance against both antibiotics. The emergence of ESBL-producing E. coli is worrisome, along with the appearance of Serratia spp in the population.

Chronic kidney disease associated with environmental toxins and exposures.

People are exposed to various potentially toxic agents and conditions in their natural and occupational environments. These agents may be physical or chemical, may enter the human body through oral, inhalational, or transdermal routes, and may exert effects on all organ systems. Several well-known as well as lesser known associations exist between chronic kidney disease (CKD) and both environmental agents and conditions, such as heavy metals, industrial chemicals, elevated ambient temperatures, and infections. The effects of these agents may be modulated by genetic susceptibility and other comorbid conditions and may lead to the development of acute and CKD. In this article, we present environmental factors that are associated with CKD.

[Childhood diarrhea in rural Nicaragua: beliefs and traditional health practices]. / Diarrea infantil en la Nicaragua rural: creencias y prácticas de salud tradicionales.

In Nicaragua, the principal cause of infant mortality is diarrhea, which is responsible for 40% of these deaths annually. This statistic reflects the low usage of health services and oral rehydration therapy (ORT). In an effort to improve the situation, several studies were carried out in Villa Carlos Fonseca municipio. This report describes two of those studies, one ethnographic and the other epidemiologic (conducted in 1989 and 1990, respectively), to find out beliefs and traditional health practices and their influence on the way in which mothers responded to their children's diarrheal illness. The ethnographic study involved interviewing 70 mothers with an average age of 28 years who had children under 2 years of age. The children represented two groups: one at high risk for diarrhea and the other at low risk. The objectives were to learn the traditional names for diarrhea, the perception of risk, and the treatments that were used. The epidemiologic study included 391 mothers over 14 years of age with one or more children under age 5 years, of whom 215 had had diarrhea in the two weeks preceding the survey. The objectives were to describe local beliefs and health practices and to determine the incidence of diarrheas according to the diagnosis made by the mothers. At least 12 types of diarrhea were identified, for which terms such as "empacho" and "sol de vista" were used. In most cases, the mothers had more confidence in folkloric treatments that they themselves or the traditional healers (curanderos) applied than in the services offered at health centers. This attitude limited their use of health services and ORT, although it was observed that in certain cases traditional treatments were used in combination with those of western medicine. There was a direct but nonsignificant correlation between the level of schooling of the mothers and the frequency with which they visited the health center. The authors suggest the effects of massages, herbal baths, and other traditional treatments should be studied to evaluate their effectiveness and adapt them, to the extent possible, to "modern" medicine. Health services providers should become familiar with traditional nomenclature and beliefs in order to be able to communicate better with mothers and steer them away from harmful practices toward improved results in infant diarrheal disease prevention programs.

Diarrea infantil en la Nicaragua rural: creencias y prácticas de salud tradicionales / Childhood diarrhea in rural Nicaragua: beliefs and traditional health practices

En Nicaragua la causa principal de mortalidad infantil es la diarrea, que causa 40 por ciento de las muertes anuales. Ello refleja el poco uso de los servicios de salud y de la terapia de rehidratación en el municipio Villa Carlos Fonseca. En este informe se describen dos de los estudios, uno etnográfico y el otro epidemiológico, realizados en 1989 y 1990, respectivamente, para conocer las crencias y prácticas de salud tradicionales y su influencia en la forma como las madres responden a la diarrea de sus hijos. En el estudio etnográfico se entrevistó a 70 madres con una media de edad de 28 años e hijos menores de 2 años, que representaban dos grupos, uno de alto riesgo de diarrea y otro de bajo riesgo y las formas de tratamiento en uso. En el estudio epidemiológico participaron 391 madres mayores de 14 años con uno o más hijos menores de 5, de los cuales 216 tuvieron diarrea en las 2 semanas anteriores. Los objetivos fueron describir las creencias y prácticas de salud locales y determinar la incidencia de las diarreas de acuerdo con el diagnóstico que hicieran las madres. Se identificaron por lo menos 12 tipos de diarrea con nombres como "empacho" y "sol de vista". En la mayoría de los casos, las madres confiaban más en los tratamientos folklóricos que aplicaban ellas mismas o las curanderas que en los servicios del centro de salud. Esto limitaba su uso de los servicios y de la TRO, pero se observó que en ciertos casos combinaban los tratamientos tradicionales con los de la medicina occidental. Hubo una correlación directa, pero no significativa, entre el nivel de escolaridad de las madres y la frecuencia con que visitaban el centro de salud. Los autores sugieren estudiar los efectos de los masajes, baños de hiebas y otros tratamientos tradicionales para evaluar y adaptarlos en cuanto sea posible a la medicina "moderna". Los prestadores de servicios de salud deben familiarizarse con la nomenclatura y creencias tradicionales para comunicarse mejor con las madres, y reorientar las prácticas perjudiciales hacia mejores resultados en los programas de prevención de la diarrea infantil

ORS and the treatment of childhood diarrhea in Managua, Nicaragua.

This paper discusses results from a study of the household management of childhood diarrhea in a poor, urban neighborhood of Managua, Nicaragua, carried out between February 1987 and April 1988. Eight key informants and a random sample of 109 mothers were interviewed. Appropriate use of ORS was not found to be a common feature of the household management of diarrhea despite health education efforts to change mothers' beliefs and practices, and the provision of oral rehydration solution (ORS) packets by state health facilities, pharmacies and informal drug vendors. Although mothers knew about dehydration and ORS, their explanatory models for diarrhea, as well as actual practices, reflected heavy reliance on self-prescribed pharmaceuticals and home remedies, while ORS use was associated with clinic attendance. These findings point to the difficulties inherent in changing people's explanatory models for illness and illness management, and the importance of understanding the context in which treatment options are assessed and utilized.

The cultural construction of childhood diarrhoea in rural Nicaragua: relevance for epidemiology and health promotion.

As a component of a series of studies of childhood diarrhoea in rural Nicaragua, lay knowledge regarding the condition and its appropriate management has been investigated through semistructured interviews with 70 mothers. These data have been combined with information from focus group discussions and observations from investigators who have been resident in the study area for many years. For any episode of childhood diarrhoea, the lay nosology influences the treatment path followed. Thus for some types of diarrhoea, treatment at a health centre or health post and the use of rehydration fluids is seen to be appropriate, while for other types the use of traditional healers or home-based treatment, often explicitly without the use of rehydration fluids, is applicable. The implications of lay nosological systems for the interpretation of epidemiological studies and for the implementation of health promotion programmes are discussed.

AIDS in Nicaragua: epidemiological, political, and sociocultural perspectives.

The AIDS epidemic in Nicaragua is several years behind that in the United States and neighboring countries of Central and South America. A combination of events, including the isolation caused by the war of the U.S.-backed Contra army against the Sandinista government, the complete economic embargo imposed on Nicaragua by the United States in 1985, self-sufficiency for blood products, and a low rate of recreational injectable-drug use, have contributed to this situation. Since the Sandinistas were defeated in the general election of 1990, people have returned to Nicaragua from areas where HIV is more prevalent, such as Honduras and the United States. It is probable that many HIV-infected persons have now entered the country. Because of the high rates of sexually transmitted diseases and cultural factors such as "machismo," HIV is likely to spread rapidly by heterosexual transmission, unless effective, culturally appropriate education and sexually transmitted disease prevention programs are implemented now.

PIP: AIDS arrived in Nicaragua much later than it did in other Latin American countries, even though both sexually transmitted diseases (STDs) and multiple partners are common. During the 1980s, HIV spread rapidly worldwide, except in a few countries such as Nicaragua. The 10 year US-sponsored low-intensity war and economic embargo isolated Nicaragua, thereby delaying the arrival of HIV. Election of the UNO party in 1990 restored diplomatic and trading relations with the US, resulting in a large influx of repatriates and refugees from countries with a high HIV/AIDS prevalence. The largest number of AIDS cases were identified in 1990-1992 (25 cases which comprised 81% of all cases through 1992). A 30-year-old heterosexual man, diagnosed with AIDS in July 1987, was the first AIDS case diagnosed in Nicaragua. He died within 30 days. As of September 1992, Nicaragua has had the only 31 reported AIDS cases. Since people in Nicaragua often have diarrhea, respiratory infections, and skin conditions, it is possible that AIDS cases have been underdiagnosed and underreported. Yet, serologic surveys have found only 52 HIV-infected persons, confirming that HIV/AIDS has not yet reached epidemic proportions in Nicaragua. Male-to-female ratios show that HIV is spread largely through heterosexual transmission. Only two prostitutes are HIV-positive, but this is likely to change, since prostitution had increased greatly at the same time the economic crisis has intensified. Many Nicaraguans are misinformed about AIDS and other STDs. Few use condoms. A correlation exists between the cumulative number of AIDS cases in Central America and US foreign aid as well as revenues from tourism. IV drug use is increasing. It is not uncommon for unsterilized equipment to be used to inject medically sanctioned drugs. Contaminated blood may soon be a problem, since remunerated blood donations continue to occur in regions with no blood banks. Machismo encourages young men to have intercourse with prostitutes or sexually experienced women and values multiple sexual conquests; thus, machismo will also likely contribute to HIV transmission.