Invited Commentary on Growth and Development in Children with Gastrointestinal Parasitic Infections

Biological and contextual determinants of early development in marginalized Roma communities: A research protocol of the RomaREACH study

BACKGROUND

The period of early childhood bears significant importance from the lifespan perspective. Children from marginalized Roma communities face several risk factors that endanger their early development. Based on the gaps in available evidence, the aim of the RomaREACH research project (Research on Early Childhood in marginalized Roma communities) is, therefore, to explore the complex mechanisms influencing psychomotor development in the first 3 years of a child's life in marginalized Roma communities, and to translate and adapt instruments for measuring development and parenting in marginalized Roma communities and assess their psychometric qualities and suitability METHODS: The project comprises two parts. The first part is a validation study of the translated Caregiver-Reported Early Development Instrument (CREDI) and the Comprehensive Early Childhood Parenting Questionnaire (CECPAQ), tools for the assessment of early development and of parenting strategies and practices. The second part is a longitudinal cohort study, in which the relationships of risk and protective factors with development are explored.

DISCUSSION

The RomaREACH project is a multicomponent study of social determinants of health and development in early childhood that can provide new evidence on the relationship of risk and protective factors with early development. Such young children from difficult-to-reach marginalized Roma communities are rarely included in research, and information about the scope and the extent of inequities in health and development in the period of early childhood is scarce. The expected results of the RomaREACH project have the potential to influence policy and practice by providing validated tools and evidence-based insights that can help mitigate the developmental risks faced by children in marginalized Roma communities and contribute to improving developmental outcomes and equity.

Molecular detection of Giardia duodenalis and Cryptosporidium spp. from stray dogs residing in monasteries in Bangkok, Thailand

Both Cryptosporidium spp. and Giardia duodenalis are enteric protozoan parasites that infect a wide variety of domestic animals as well as humans worldwide, causing diarrheal diseases. Giardia duodenalis assemblages C and D are specific to canine hosts and zoonotic assemblages A and B are also found in dogs as a reservoir host. In dogs, Cryptosporidium canis is the host-specific species while humans are infected by C. hominis and C. parvum and at least another 16 zoonotic Cryptosporidium species have been reported causing human infections, with C. meleagridis, C. viatorum, and C. ubiquitum being the most frequent. The objective of this study was to determine the prevalence of Cryptosporidium spp. and G. duodenalis from stray dogs in areas of Bangkok and to identify the species and assemblages. Fecal samples (540) were collected from dogs residing in 95 monasteries in 48 districts in the Bangkok metropolitan area. Nested Polymerase Chain Reaction (PCR) was performed using the ssu-rRNA gene for both parasites. In total, 3.0% (16/540) samples were positive for G. duodenalis, with most being G. duodenalis assemblage D (7/16) followed by assemblage C (7/16) and zoonotic assemblage A (2/16). The prevalence of Cryptosporidium spp. was 0.7% (4/540) based on the PCR results and all were the dog genotype C. canis. These results indicated that dogs residing in Bangkok monasteries poses a limited role as source of human giardiosis and cryptosporidiosis.

[Hospitalization for infectious diseases, parasitism and nutritional evolution of children attended in public child day care centers]

The scope of this article is to analyze the influence of hospitalizations by infectious diseases (diarrhea and pneumonia) and parasitism in nutritional evolution, over the period of a year, among children enrolled in municipal public day care centers. Mothers of children in a cohort were asked about previous hospitalization due to diarrhea and pneumonia, as well as in relation to the elimination of worms, during the period of one year of attendance at day care centers. Anthropometrics were measured at each visit. An adjusted model to examine the relationship between infections experienced and growth outcomes (weight and height) was applied. In a subset analysis of 269 children followed up at every visit over the course of 12 months, hospitalization due to pneumonia and parasite infection were associated with decelerated growth in weight and height. Parasitic infection and pneumonia were associated with growth impairment in terms of weight and height.