Vietnamese Children Research Articles

Pediatric neuropsychological assessment in Southeast Asia: Current status and future directions with Vietnam as a scoping review case example.

There is a concerning lack of systematic understanding regarding the availability and validity of neuropsychological assessment tools for children in Southeast Asia. This issue is further complicated by the unclear landscape for test development, adaptations, and translations in these countries. The purpose of this paper is twofold. First, we offer insights into the broader practice of pediatric neuropsychology within Southeast Asia communities based on their current medical infrastructural standings. Then, we provide a specific case study by examining the current status of pediatric neuropsychology for Vietnamese children. A brief overview of the status of pediatric neuropsychology in Southeast Asia groups is provided, followed by a scoping review examining performance-based and objective rating inventories for the Vietnamese pediatric population. 42 studies were included in the Vietnamese review spanning several cognitive and socioemotional domains. Adaptation and translation protocols were significantly variable. Figures and tables summarizing the identified questionnaires and test measures are included. Vietnam, with its moderately developed medical infrastructure and shared cultural, economic, and sociopolitical traits with other Southeast Asian countries, provides a compelling case study for the growth, challenges, and gaps in neuropsychology. While the field continues to develop in this country, ongoing opportunities and the need for guidelines on test development and adaptation are critically needed to advance the field further. Implications for more and less developed Southeast Asia countries are provided based on our scoping review.

Epidemiology of pneumococcal meningitis in sentinel hospital surveillance of Viet Nam, 2015–2018

BackgroundStreptococcus pneumoniae (S. pneumoniae), Haemophilus influenzae (H. influenzae), and Neisseria meningitidis (N. meningitidis) are leading causes of childhood bacterial meningitis and preventable by vaccines. The aim of this hospital-based sentinel surveillance is to describe the epidemiological characteristics of pneumococcal meningitis, including disease burden, and to provide baseline data on pneumococcal serotype distribution to support decision making for pneumococcal conjugate vaccine (PCV) introduction in Vietnam.MethodsSurveillance for probable bacterial meningitis in children 1–59 months of age is conducted in three tertiary level pediatric hospitals: one in Hanoi and two in Ho Chi Minh City. Cerebrospinal fluid (CSF) specimens were collected via lumbar puncture from children with suspected meningitis. Specimens were transferred immediately to the laboratory department of the respective hospital for cytology, biochemistry, and microbiology testing, including culture. PCR testing was conducted on CSF specimens for bacterial detection (S. pneumoniae, H. influenzae, and N. meningitidis) and pneumococcal serotyping.ResultsDuring 2015–2018, a total of 1,803 children with probable bacterial meningitis were detected; 1,780 had CSF specimens available for testing. Of 245 laboratory-confirmed positive cases, the majority were caused by S. pneumoniae (229,93.5%). Of those with S. pneumoniae detected, over 70% were caused by serotypes included in currently available PCV products; serotypes 6 A/6B (27.1%), 14 (19.7%), and 23 F (16.2%) were the most common serotypes. Children with laboratory-confirmed pneumococcal meningitis were more likely to live in Hanoi (p < 0.0001) and children 12–23 months of age were at greater odds (OR = 1.65, 95% CI: 1.11, 2.43; p = 0.006) of having confirmed pneumococcal meningitis compared to children < 12 months of age when compared to those without laboratory-confirmed bacterial meningitis. Additionally, children with confirmed pneumococcal meningitis were more likely to exhibit signs and symptoms consistent with clinical meningitis compared to negative laboratory-confirmed meningitis cases (p < 0.0001) and had a greater odds of death (OR = 6.18, 95% CI: 2.98, 12.86; p < 0.0001).ConclusionsPneumococcal meningitis contributes to a large burden of bacterial meningitis in Vietnamese children. A large proportion are caused by serotypes covered by PCVs currently available. Introduction of PCV into the routine immunization program could reduce the burden of pneumococcal meningitis in Viet Nam.

The Role of Complementary Feeding Practices in Addressing the Double Burden of Malnutrition among Children Aged 6-23 Months: Insight from the Vietnamese General Nutrition Survey 2020.

Background/Objectives: Optimal infant and young child feeding (IYCF) practices are crucial to addressing the double burden of malnutrition (DBM), encompassing undernutrition (including micronutrient deficiencies) and overnutrition. This study examined the demographic and socioeconomic determinants of IYCF practices, and their impacts on the DBM among 2039 Vietnamese children aged 6-23 months from the General Nutrition Survey 2020. Methods: Thirteen IYCF indicators recommended by the WHO/UNICEF were evaluated. Associations between IYCF indicators and outcome variables were assessed using logistic regressions. Results: The prevalence of stunting, underweight, and overweight subjects was 10.9%, 5.6%, and 3.1%, respectively. Low serum zinc affected 56.7% of children, while 14.3% had low serum retinol, 31.2% had anemia, and 34.6% had iron deficiency (ID). Only 36.7% of children achieved minimum dietary diversity (MDD), and 29.0% achieved the minimum acceptable diet (MAD). Children from the younger age group (6-11 months), ethnic minorities, those living in rural/mountainous regions, and poorer wealth quintiles had reduced odds of meeting IYCF criteria, including MDD and MAD. Infants meeting MDD had reduced odds of stunting [adjusted odds ratio (95% confidence intervals): 0.61 (0.41, 0.92)], and ID [0.69 (0.54, 0.88)]. Children meeting MAD had reduced odds of anemia [0.72 (0.57, 0.91)], ID [0.66 (0.52, 0.84)], and low serum retinol [0.63 (0.41, 0.99)]. Continued breastfeeding (12-23 months) reduced the odds of being underweight [0.50 (0.27, 0.92)] and of having low serum zinc [0.70 (0.52, 0.96)]. Adequate minimum milk feeding frequency had increased odds of being overweight [3.33 (1.01, 11.09)]. Conclusions: Suboptimal IYCF practices were significant predictors of the DBM among Vietnamese children, with evident age-specific, geographical, and socioeconomic disparities.

Association between rs4994 variant in β3-Adrenergic receptor and obesity in Vietnamese preschool-age children, independent of eating behaviors

BackgroundThe Arg64 allele of the rs4994 (Trp64Arg) variant in the β3-adrenergic receptor (ADRB3) gene is involved in the control of energy balance by altering lipolysis and thermogenesis in adipocytes, ultimately contributing to the development of obesity. The objective of our study was to investigate the association between the rs4994 variant of the ADRB3 gene and obesity in Hanoi preschool-age children, adjusting for their eating behaviors.MethodsA cross-sectional study was performed involving 708 children with normal weight and 304 children with obesity aged 3–5 years from 36 kindergartens in Hanoi, Vietnam. Cheek mucosa cell samples were used for DNA extraction, and genotyping at the ADRB3-rs4994 locus was performed using the polymerase chain reaction–restriction fragment length polymorphism method (PCR–RFLP). Eating behaviors were assessed using the Children’s Eating Behaviour Questionnaire (CEBQ). Binary logistic regression analysis was employed to examine the association between the rs4994 variant and obesity, adjusting for confounding factors such as age, sex, residence, birth weight, and eating behaviors.ResultsThe frequency of the C allele in the group with obesity was 16.4%, which was higher than in the control group (11.7%, P = 0.003). Children with the CC genotype exhibited significantly greater weight and weight-for-age Z-score compared to those with the TT and TC genotypes (P = 0.004 and 0.03, respectively). Following univariate and multivariate analyses adjusted for age, sex, residence, birth weight, and eating behaviors, a significant association between the rs4994 variant and obesity was observed (P < 0.05).ConclusionsThis study indicated that the ADRB3-rs4994 variant can be considered as an independent risk factor for obesity in Vietnamese preschool children.

Prevalence, Predictors, and Treatment Outcomes of Anemia in Vietnamese School-Age Children With Helicobacter pylori Infection.

Background A growing number of studies suggest that anemia caused by Helicobacter pylori (H. pylori) infection is prevalent in developing countries. A combination of H. pylori eradication and iron supplementation may be effective intreating iron deficiency anemia (IDA) caused by H. pylori infection. The aim of this study is to assess the prevalence, risk factors, and treatment outcomes of anemia in Vietnamese school-age children infected with H. pylori Methods A cross-sectional study was conducted from April 2023 to April 2024 involving 112 dyspeptic children from 5 to 16 years old who were admitted to Can Tho Children's Hospital, Vietnam. H. pylori infection was diagnosed with a positive histopathology combined with a rapid urease test. A bivariate and multivariate logistic regression model was used to identify independent variables associated with anemia in H. pylori-infected children. Results The prevalence of anemia and IDA (iron deficiency anemia) amongH . pylori-infected children were 28.6% and 53.1%, respectively. The risk factor for anemia was age group from 11 to 16 years of age (OR: 3.24; CI 95%:1.21- 8.70). Iron supplementation (OR: 0.14; CI 95%:0.03 - 0.66) and periodic deworming (OR: 0.29; CI 95%: 0.10-0.89) were protective factors against anemia. After H. pyroli eradication and iron supplementation, all hematological parameters were increased among 32 anemic patients. Hemoglobin increased from 9.9 ±2.1 to 11.9±2.1 g/dL (p<0.001), mean corpuscular hemoglobin increased from 25.1 ± 4.1 to 28.0 ± 3.3 pg (P=0.003), and ferritin (IQR) increased from 16.7 (9.5-45.2) to 27.0 (15.1-47.0) µg/L (p<0.001). Conclusion Anemia in Vietnamese school-age children infected with H. pylori is prevalent. Taking iron supplements and periodic deworming reduces the risk of anemia. H. pylori eradication therapy plus oral iron supplementation will improve iron status in H. pylori-infected children.

Variations of Eating Behaviors Among Vietnamese Preschool Children and Their Association With Children's Anthropometric Z-Scores: Results From Analyses of the Children's Eating Behavior Questionnaire in 10 000 Children.

Eating behaviors, which are shaped during childhood, are one of the important factors influencing children's growth. This study aimed to investigate the variations in eating behaviors among Vietnamese preschool children aged 3 to 6 years using the Children Eating Behavior Questionnaire (CEBQ) and their association with anthropometric Z-scores. A cross-sectional study was conducted on 10 172 children from 36 to 72 months old, recruited from three different socioeconomic regions of Hanoi. Differentiation of eating behaviors between two sexes was observed across all age groups, but most obvious at 36 to 48 months of age. The subscales of emotional overeating (EOE), enjoyment of food (EF), and desire to drink (DD) were higher in 60- to 72-month age groups and vice versa for slowness in eating (SE) and emotional undereating (EUE) subscales. Analyses using the general linear model showed that CEBQ subscales were associated with anthropometric Z-scores in both girls and boys.

Malocclusion and Deleterious Oral Habits in Vietnamese Children Between the Ages of 8 and 12 years: A Cross Sectional Study

Abstract Aim: This study aimed to determine the relationship between malocclusion and deleterious oral habits in the Vietnamese children aged 8–12 years. Materials and Methods: A cross-sectional descriptive analysis was undertaken on a total of 434 children (8–12 years old, 208 males and 226 females), separated into five age groups: 8 years old (16.8%), 9 years old (18.5%), 10 years old (20.7%), 11 years old (21.4%), and 12 years old (22.6%), with all four first permanent molars erupted, no previous orthodontic treatment, loss of the second primary molar or presence of the second primary molar root or decay, loss of surface material on the second primary molar, and underfilling of the second primary molar size in the mesiodistal direction. The deleterious oral habits and malocclusion were assessed through a clinical examination and questionnaires for parents. The descriptive statistical analysis revealed the following findings: mean and standard deviation. The chi-squared test and Fisher’s exact test were used to compare categorical variables. The data were considered significant at P &lt; 0.05. Result: Deleterious oral habits were found to have a significant relationship with malocclusion. Mouth breathing habits were associated with anterior open bites (P &lt; 0.05). The tongue thrusting habit was associated with anterior open bite (P &lt; 0.05), posterior crossbite (P &lt; 0.01), overbite greater than 4 mm (P &lt; 0.01), and angle class I malocclusion (P &lt; 0.05). Chewing habits on one side were associated with posterior crossbite (P &lt; 0.01) and posterior open bite (P &lt; 0.05). The habit of pen/pencil/nail biting was associated with midline deviation (P &lt; 0.05). As children got older, there was a greater need for orthodontic treatment for dental healthcare, according to the index of orthodontic treatment need. In the 8-year-old patient group, the need was 4.1%; in the 9-year-old patient group, it was 5%; in the 10-year-old patient group, it was 9%; in the 11-year-old patient group, it was 19.4%; and in the 12-year-old patient group, it was 22.4%. The distribution of orthodontic treatment needs for dental health was significantly different based on the number of deleterious oral habits children had (P &lt; 0.01). Conclusion: Abnormal oral habits were prevalent in about 30.6% of the study participants. Mouth breathing, tongue thrusting, pen/pencil/nail biting, and one-side chewing had a significant impact on malocclusion.

Relationship between serum zinc levels and the burden of treatment in children with pneumonia

Background: Pneumonia is a common childhood disease often requiring hospitalization, with the potential for rapid progression and complications, particularly in children under five years old. Zinc plays a crucial role in various organ systems, especially the respiratory system. However, data on zinc levels and pneumonia in Vietnamese children remain limited. This study aimed to investigate the relationship between serum zinc levels and the treatment burden in children with pneumonia. Methods: A prospective observational study was conducted involving 200 children aged 2 to 59 months who were diagnosed with pneumonia and hospitalized at Can Tho Children's Hospital, Vietnam. Serum zinc levels were measured, and treatment characteristics were monitored, including the need for respiratory support, antibiotic escalation, and treatment duration. Data were analyzed using descriptive statistics, independent t-tests, simple linear regression and multivariable linear regression to determine associations between serum zinc levels and treatment outcomes. Results: Children who were not exclusively breastfed for the first six months had significantly lower serum zinc levels compared to those who were exclusively breastfed (p&lt;0.001). Lower serum zinc levels were significantly associated with the need for respiratory support (p=0.001), antibiotic escalation (p=0.002), prolonged antibiotic use (p=0.01), and longer treatment duration (p=0.011). Multivariate linear regression revealed that each unit decrease in serum zinc levels increased treatment duration by 0.218 days (p=0.015). Conclusion: Low serum zinc levels are associated with increased treatment burden in children under five years old with pneumonia.

Cross-sectional Assessment of Physical Manifestations in Vietnamese Children with Thalassemia: A Single-Center Study

Cross-sectional Assessment of Physical Manifestations in Vietnamese Children with Thalassemia: A Single-Center Study

Developing a conceptual framework for exploring cultural representations in Vietnamese children’s picturebooks

In a time of globalisation, the teaching of intercultural understanding has become one of the essential components of teaching curriculum in classrooms around the world. Among various materials for teaching intercultural understanding, multicultural children’s picturebooks have been applied widely in classrooms to raise students’ awareness of cultural representations of diverse countries, especially the teaching of Asian cultures in the context of Western classrooms. However, studies in teaching intercultural understanding have also reported teachers’ difficulties in interpreting and analysing cultural elements in multicultural materials including Asian children’s picturebooks. Therefore, this paper firstly explores painters’ and illustrators’ methods in depicting cultural aspects in Vietnam. Then, the paper proposes a conceptual framework for interpreting cultural meanings children’s picturebooks about Vietnam. To do so, we conducted in-depth interviews with Vietnamese painters and illustrators who are experienced in illustrating Vietnamese culture in artworks including picturebooks. Based on interview findings with Vietnamese painters and illustrators, we propose a conceptual framework for exploring cultural aspects in Vietnamese children’s picturebooks. Grounded Theory (Strauss &amp; Corbin, 1998) and qualitative research design (Burgess &amp; Bryman, 1999; Mayring, 2014) along with influential theoretical frameworks in the field of cultural studies and children’s literature (Hall, 1976; Kress &amp; van Leeuwen, 2006; Painter et al., 2013; Weaver, 1993) are applied in the present paper. Findings in this paper are significant to researchers and teachers who are interested in working with multicultural picturebooks as well as multimodal texts to explore Asian cultures.

Risk factors for Helicobacter pylori infection in children with gastrointestinal symptoms in Vietnam

ObjectivesTo investigate the prevalence and risk factors associated with Helicobacter pylori infection in Vietnamese children. MethodsChildren under 16 years old with gastrointestinal symptoms underwent esophagogastroduodenoscopy and H. pylori infection was diagnosed using rapid urease test. ResultsA total of 246 children with gastrointestinal symptoms were included. The mean age was 8.4 ± 2.6 years. A total 81.3% tested positive for H. pylori. Children infected with H. pylori had a lower rate of nausea but a higher rate of lesions in the duodenal bulb and nodular lesions than children without H. pylori infection (26.5% vs 45.6%, P <0.01; 40.0% vs 23.9%; P = 0.04; and 68.5% vs 30.3%, P <0.0001, respectively). Compared with children aged under 5 years, children aged 11 years and older were four times more likely to be infected with H. pylori, with odds ratio (OR) 3.50, 95% confidence interval (CI) 1.07-11.39, P = 0.04. Washing hands with soap was associated with a reduced risk of H. pylori infection by three times (OR 0.35, 95% CI 0.17-0.69, P = 0.002). Children living in a family where members had a history of H. pylori infection were nine times more likely to be infected with H. pylori (OR 8.87, 95% CI 1.15-68.45, P = 0.04). ConclusionsThe prevalence of H. pylori infection in Vietnamese children with gastroenteritis is high. Our results identified several risk factors and emphasize the role of handwashing with soap before eating and after using the toilet in reducing the risk of H. pylori infection in children.

Clinical Picture and Risk Factors for Severity of SARS-CoV-2 and Dengue Coinfection in Children: Experience From a Tertiary Hospital in Vietnam.

Introduction Dengue is an infectious disease that is a burden in Asia-Pacific and Latin America. The COVID-19 pandemic in dengue-endemic areas has caused a "double burden" because of the possibility of coinfection, especially in children who are vulnerable to both COVID-19 and dengue. This study aimed to describe the characteristics and identify risk factors for the severity of the coinfection in Vietnamese children. Methods This was a retrospective cohort study, undertaken at Children's Hospital 1 (Ho Chi Minh City, Vietnam) during the fourth wave of the COVID-19 pandemic. All children under 16 years old who were admitted to the hospital from April 27, 2021 to June 30, 2022, and diagnosed with SARS-CoV-2 and dengue coinfection were included. Results From April 2021 to June 2022, a total of 31 patients with the coinfection were included, with 19 of them being male (61.3%). The median age was 10.8 years old (IQR, 5.1-14.1). Fourteen children (45.2%) had preexisting comorbidities, with the most common comorbidity being overweight/obesity (ten children). Nearly two-thirds of the children were diagnosed with dengue without/with warning signs (61.3%) and were classified as having mild COVID-19 (83.9%). The most frequently observed clinical characteristics were fever (n=29, 93.6%), followed by abdominal pain, vomiting, and petechiae. All patients had high serum ferritin, and 83.9% presented with thrombocytopenia. None of thecases died. Overweight/obesity, abdominal pain, and petechiae were factors independently associated with severe disease. Conclusion Most of the children had mild COVID-19 and disease progression similar to patients with dengue alone. However, some children may have severe COVID-19 and dengue coinfection. Obesity, abdominal pain, and petechiae were identified as independent risk factors for disease severity in pediatric cases. Further studies with multicenters and a larger sample size are needed to assess the coinfection more thoroughly.

A simple nomogram to predict dengue shock syndrome: A study of 4522 south east Asian children.

Dengue shock syndrome (DSS) substantially worsens the prognosis of children with dengue infection. This study aimed to develop a simple clinical tool to predict the risk of DSS. A cohort of 2221 Thai children with a confirmed dengue infection who were admitted to King Chulalongkorn Memorial Hospital between 1987 and 2007 was conducted. Another data set from a previous publication comprising 2,301 Vietnamese children with dengue infection was employed to create a pooled data set, which was randomly split into training (n = 3182), testing (n = 697) and validating (n = 643) datasets. Logistic regression was compared to alternative machine learning algorithms to derive the most predictive model for DSS. 4522 children, including 899 DSS cases (758 Thai and 143 Vietnamese children) with a mean age of 9.8 ± 3.4 years, were analyzed. Among the 12 candidate clinical parameters, the Bayesian Model Averaging algorithm retained the most predictive subset of five covariates, including body weight, history of vomiting, liver size, hematocrit levels, and platelet counts. At an Area Under the Curve (AUC) value of 0.85 (95% CI: 0.81-0.90) in testing data set, logistic regression outperformed random forest, XGBoost and support vector machine algorithms, with AUC values being 0.82 (0.77-0.88), 0.82 (0.76-0.88), and 0.848 (0.81-0.89), respectively. At its optimal threshold, this model had a sensitivity of 0.71 (0.62-0.80), a specificity of 0.84 (0.81-0.88), and an accuracy of 0.82 (0.78-0.85) on validating data set with consistent performance across subgroup analyses by age and gender. A logistic regression-based nomogram was developed to facilitate the application of this model. This work introduces a simple and robust clinical model for DSS prediction that is well-tailored for children in resource-limited settings.

Zinc Deficiency and the Severity of Pneumonia in Vietnamese Children: A Hospital-Based Study.

Background Pneumonia is a critical global health concern that often results in severe complications and fatalities, especially among young children. Zinc plays a crucial role in immune function and maintaining respiratory epithelial integrity. Despite its importance, data on the prevalence of zinc deficiency and its impact on pneumonia severity in Vietnamese children are limited. Objectives This study aimed to investigate the prevalence of zinc deficiency and its association with pneumonia severity in Vietnamese children under five years old. The findings could significantly contribute to our understanding of the role of zinc in pneumonia severity, guiding future public health interventions, nutritional policies, and clinical practices to prevent zinc deficiency and reduce pneumonia morbidity and mortality in children. Methods An analytical cross-sectional study was conducted at a major pediatric center in Southwestern Vietnam from December 2022 to February 2024, involving 222 children aged 2 to 59 months diagnosed with pneumonia. Clinical assessments and laboratory measurements, including serum zinc levels, were performed. Statistical analyses were conducted to compare clinical characteristics and outcomes between zinc-deficient and non-deficient groups. Multivariable logistic regression was used to assess the association between zinc deficiency and pneumonia severity, with statistical significance set at p<0.05. Results The prevalence of zinc deficiency among children with pneumonia was 74.3%. Zinc-deficient children showed a significantly higher proportion of severe pneumonia (57.6% vs. 8.8%, p<0.001), as well as a higher proportion of high fever, poor feeding, vomiting, and respiratory distress compared to non-deficient children (p<0.001). Multivariable logistic regression identified zinc deficiency as an independent predictor of severe pneumonia (aOR=13.1, 95% CI: 4.7-36.8, p<0.001). Conclusion Zinc deficiency was prevalent among Vietnamese children with pneumonia and was associated with an increased risk of severe pneumonia.

Effect of MDR1 C3435T and CYP2C19 genetic polymorphisms on the outcome of Helicobacter pylori eradication treatment in children with gastritis and peptic ulcer, Vietnam

BackgroundHelicobacter pylori eradication therapy based on antimicrobial susceptibility in Vietnamese children currently get low efficiency. There are causes of treatment failure, among host genetic factors namely MDR1 C3435T and CYP2C19 affect the absorption and metabolism of proton pump inhibitors - a crucial component of eradication therapy. The study aimed to investigate the effect of MDR1 C3435T and CYP2C19 genetic polymorphisms on the cure rate.Methods207 pediatric patients with gastritis and peptic ulcer infecting Helicobacter pylori completed the eradication therapy based on antimicrobial susceptibility with proton pump inhibitor esomeprazole. Eradication efficacy was assessed after at least 4 weeks by the urease breath test. MDR1 C3435T genetic polymorphism and CYP2C19 genotype were determined using a sequencing method based on Sanger’s principle.ResultsAmong 207 children recruited in this study, the ratio of CYP2C19 EM, IM, and PM phenotypes was 40.1%, 46.4%, and 16.9%, respectively. The patient with MDR1 3435 C/C polymorphism accounted for 43.0%, MDR1 3435 C/T was 40.1%, and MDR1 3435T/T was 16.9%. The cure rate of Helicobacter pylori infection in patients with CYP2C19 EM genotype was 78.3%; 83.3% of those with the IM genotype, and PM genotype was 96,4% (p = 0.07). Successful eradication rates for Helicobacter pylori were 85.4%, 86.7%, and 68.6% in patients with the MDR1 3435 C/C, C/T, and T/T, respectively (p = 0.02). Multiple logistic regression analysis found that MDR1 C3435T genetic polymorphisms of patients were significant independent risk factors for treatment failure, and CYP2C19 genotype did not affect Helicobacter pylori eradication.ConclusionsThe Helicobacter pylori eradication rates by regimens based on antibiotic susceptibility and esomeprazole were not significantly different between the CYP2C19 phenotypes. The MDR1 C3435T polymorphism is one of the factors impacting Helicobacter pylori eradication results in children.

Teacher-child Discourse in Vietnamese Preschool Classrooms: An Exploratory Case Study of Teachers’ Questions and Statements in the Planned Science Activity

AbstractThe quality of teacher-child discourse affects children’s development and learning. Our study aims to explore teacher-child discourse during planned science activities (PSAs) in Vietnamese preschools. This research is essential to understanding the reasons behind Vietnamese children’s low level of scientific skills and to exploring the dynamics of discourse in an Asian context. We conducted a case study to describe and understand the teacher-child discourse during PSAs. The study involved eight PSA sessions in four classes of three to four-year-old in Da Nang, Vietnam. We found that teachers tended to make statements more often than ask questions. When they did ask, they preferred using closed questions that did not require much of a response from children. Open questions were used sparingly, even though they are crucial for promoting children’s cognitive thinking and literacy. Teachers also made use of rhetorical questions that did not require any answer. This has led to mostly non-interactive classes where students remain passive learners. To improve the quality of teacher-child discourse, we suggest providing teacher training on encouraging children to participate and asking more engaging questions.

School, family, and children's development in Time Storeand Be Friend with The Sky

In recent years, many South Korean children's literary works have been translated into Vietnamese. Meanwhile, some beautiful Vietnamese pieces are translated into Korean. The translation has led to cultural interactions through literature, expanding the horizon of young readers in the two countries. From that reality, the article applies the juxtapositional model of comparison to examine two pieces of workTime Storeby L.N. Young(2015) [1](South Korea) andBe Friend with the Skyby N.N.Anh(2019) [2](Vietnam) to explore new meanings of each work. Iftime storeemphasizes the role of time pressure on children in modern society,Be Friend with the Skyaffirms the healing role of love for children. By juxtaposing these two pieces of work and specifically analyzing child characters in their interactions with school, family, and their self-advocacy, the article shows dialogues in opposite directions, which eliminates the viewpoint of the role of adults towards children in the two pieces of work mentioned above. Besides, through the juxtapositional model of comparison, the article also discusses the interactions between Vietnamese and South Korean children's literature in the early 21stcentury.

Evolution of DS-1-like G8P[8] rotavirus A strains from Vietnamese children with acute gastroenteritis (2014-21): Adaptation and loss of animal rotavirus-derived genes during human-to-human spread.

Animal rotaviruses A (RVAs) are considered the source of emerging, novel RVA strains that have the potential to cause global spread in humans. A case in point was the emergence of G8 bovine RVA consisting of the P[8] VP4 gene and the DS-1-like backbone genes that appeared to have jumped into humans recently. However, it was not well documented what evolutionary changes occurred on the animal RVA-derived genes during circulation in humans. Rotavirus surveillance in Vietnam found that DS-1-like G8P[8] strains emerged in 2014, circulated in two prevalent waves, and disappeared in 2021. This surveillance provided us with a unique opportunity to investigate the whole process of evolutionary changes, which occurred in an animal RVA that had jumped the host species barrier. Of the 843 G8P[8] samples collected from children with acute diarrhoea in Vietnam between 2014 and 2021, fifty-eight strains were selected based on their distinctive electropherotypes of the genomic RNA identified using polyacrylamide gel electrophoresis. Whole-genome sequence analysis of those fifty-eight strains showed that the strains dominant during the first wave of prevalence (2014-17) carried animal RVA-derived VP1, NSP2, and NSP4 genes. However, the strains from the second wave of prevalence (2018-21) lost these genes, which were replaced with cognate human RVA-derived genes, thus creating strain with G8P[8] on a fully DS-1-like human RVA gene backbone. The G8 VP7 and P[8] VP4 genes underwent some point mutations but the phylogenetic lineages to which they belonged remained unchanged. We, therefore, propose a hypothesis regarding the tendency for the animal RVA-derived genes to be expelled from the backbone genes of the progeny strains after crossing the host species barrier. This study underlines the importance of long-term surveillance of circulating wild-type strains in order to better understand the adaptation process and the fate of newly emerging, animal-derived RVA among the human population. Further studies are warranted to disclose the molecular mechanisms by which spillover animal RVAs become readily transmissible among humans, and the roles played by the expulsion of animal-derived genes and herd immunity formed in the local population.

The relationship between bisphenol A and phthalates with precocious puberty in Vietnamese children.

This study is aimed to explore the correlation between bisphenol A (BPA) and phthalates, including diethylhexylphthalate (DEHP) and dibutylphthalate (DBP), and precocious puberty (PP). A case-control study was conducted in Ho Chi Minh City, Vietnam, from November 2021 to April 2022, involving 250 children, with 124 of them diagnosed with PP and 126 serving as controls. We assessed the levels of urinary BPA, DEHP, and DBP in all participants and examined their association with the risk of PP. BPA was detected in 11.3 % of PP cases but was not found in any individuals in the control group (p<0.001). Diethylhexylphthalate metabolite (MEHP) was not detected in any of the samples. Positive urinary results for dibutylphthalate metabolite (MBP) were observed in 8.1 % of PP cases and 2.4 % in the control group, with an odds ratio of 3.6 (95 % confidence interval: 0.97-13.4, p=0.03). The PP group exhibited a higher prevalence of positive urinary BPA and DBP levels compared to the control group.

Triple burden of malnutrition among Vietnamese 0·5-11-year-old children in 2020-2021: results of SEANUTS II Vietnam.

SEANUTS II Vietnam aims to obtain an in-depth understanding of the nutritional status and nutrient intake of children between 0.5-11.9 years old. Cross-sectional survey. A multistage cluster systematic random sampling method was implemented in different regions in Vietnam: North Mountainous, Central Highlands, Red River Delta, North Central and Coastal Area, Southeast and Mekong River Delta. 4001 children between 6 months and 11.9 years of age. Prevalence of stunting and underweight was higher in rural than in urban children, whereas overweight and obese rates were higher in urban areas. 12.0% of the children had anemia and especially children 0.5-1-year-old were affected (38.6%). Low serum retinol was found in 6.2% of children ≥ 4 years old. Prevalence of vitamin D insufficiency was 31.1% while 60.8% had low serum zinc. For nutrient intake, overall, 80.1% of the children did not meet the estimated energy requirements. For calcium intake, ∼60% of the younger children did not meet the RNI while it was 92.6% in children >7 years old. For vitamin D intake, 95.0% of the children did not meet RNI. SEANUTS II Vietnam indicated that overnutrition was more prevalent than undernutrition in urban areas, while undernutrition was found more in rural areas. The high prevalence of low serum zinc, vitamin D insufficiency and the inadequate intakes of calcium and vitamin D are of concern. Nutrition strategies for Vietnamese children should consider three sides of malnutrition and focus on approaches for the prevention malnutrition.