Complement in breast milk modifies offspring gut microbiota to promote infant health.

Breastfeeding offers demonstrable benefits to newborns and infants by providing nourishment and immune protection and by shaping the gut commensal microbiota. Although it has been appreciated for decades that breast milk contains complement components, the physiological relevance of complement in breast milk remains undefined. Here, we demonstrate that weanling mice fostered by complement-deficient dams rapidly succumb when exposed to murine pathogen Citrobacter rodentium (CR), whereas pups fostered on complement-containing milk from wild-type dams can tolerate CR challenge. The complement components in breast milk were shown to directly lyse specific members of gram-positive gut commensal microbiota via a C1-dependent, antibody-independent mechanism, resulting in the deposition of the membrane attack complex and subsequent bacterial lysis. By selectively eliminating members of the commensal gut community, complement components from breast milk shape neonate and infant gut microbial composition to be protective against environmental pathogens such as CR.

Vaccination, immunity, and the changing impact of COVID-19 on infant health.

In utero exposure to COVID-19 infection may lead to large intergenerational health effects. The impact of infection exposure has likely evolved since the onset of the pandemic as new variants emerge, immunity from prior infection increases, vaccines become available, and vaccine hesitancy persists, such that when infection is experienced is as important as whether it is experienced. We examine the changing impact of COVID-19 infection on preterm birth and the moderating role of vaccination. We offer the first plausibly causal estimate of the impact of maternal COVID-19 infection by using population data with no selectivity, universal information on maternal COVID-19 infection, and linked sibling data. We then assess change in this impact from 2020 to 2023 and evaluate the protective role of COVID-19 vaccination on infant health. We find a substantial adverse effect of prenatal COVID-19 infection on the probability of preterm birth. The impact was large during the first 2 y of the pandemic but had fully disappeared by 2022. The harmful impact of COVID-19 infection disappeared almost a year earlier in zip codes with high vaccination rates, suggesting that vaccines might have prevented thousands of preterm births. The findings highlight the need to monitor the changing consequences of emerging infectious diseases over time and the importance of mitigation strategies to reduce the burden of infection on vulnerable populations.

Impact of mHealth interventions on maternal, newborn, and child health from conception to 24 months postpartum in low- and middle-income countries: a systematic review.

BACKGROUND: Mobile health (mHealth) technologies have been harnessed in low- and middle-income countries (LMICs) to address the intricate challenges confronting maternal, newborn, and child health (MNCH). This review aspires to scrutinize the effectiveness of mHealth interventions on MNCH outcomes during the pivotal first 1000 days of life, encompassing the period from conception through pregnancy, childbirth, and post-delivery, up to the age of 2 years. METHODS: A comprehensive search was systematically conducted in May 2022 across databases, including PubMed, Cochrane Library, Embase, Cumulative Index to Nursing & Allied Health (CINAHL), Web of Science, Scopus, PsycINFO, and Trip Pro, to unearth peer-reviewed articles published between 2000 and 2022. The inclusion criteria consisted of (i) mHealth interventions directed at MNCH; (ii) study designs, including randomized controlled trials (RCTs), RCT variations, quasi-experimental designs, controlled before-and-after studies, or interrupted time series studies); (iii) reports of outcomes pertinent to the first 1000 days concept; and (iv) inclusion of participants from LMICs. Each study was screened for quality in alignment with the Cochrane Handbook for Systematic Reviews of Interventions and the Joanne Briggs Institute Critical Appraisal tools. The included articles were then analyzed and categorized into 12 mHealth functions and outcome domain categories (antenatal, delivery, and postnatal care), followed by forest plot comparisons of effect measures. RESULTS: From the initial pool of 7119 articles, we included 131 in this review, comprising 56 RCTs, 38 cluster-RCTs, and 37 quasi-experimental studies. Notably, 62% of these articles exhibited a moderate or high risk of bias. Promisingly, mHealth strategies, such as dispatching text message reminders to women and equipping healthcare providers with digital planning and scheduling tools, exhibited the capacity to augment antenatal clinic attendance and enhance the punctuality of child immunization. However, findings regarding facility-based delivery, child immunization attendance, and infant feeding practices were inconclusive. CONCLUSIONS: This review suggests that mHealth interventions can improve antenatal care attendance and child immunization timeliness in LMICs. However, their impact on facility-based delivery and infant feeding practices varies. Nevertheless, the potential of mHealth to enhance MNCH services in resource-limited settings is promising. More context-specific implementation studies with rigorous evaluations are essential.

Health equity in Somalia? An evaluation of the progress made from 2006 to 2019 in reducing inequities in maternal and newborn health.

BACKGROUND: Every human being has the right to affordable, high-quality health services. However, mothers and children in wealthier households worldwide have better access to healthcare and lower mortality rates than those in lower-income ones. Despite Somalia's fragile health system and the under-5 mortality rate being among the highest worldwide, it has made progress in increasing reproductive, maternal, and child health care coverage. However, evidence suggests that not all groups have benefited equally. We analysed secondary 2006 and 2018-19 data to monitor disparities in reproductive, maternal, and child health care in Somalia. METHODS: The study's variables of interest are the percentage of contraceptive prevalence through modern methods, adolescent fertility rate, prenatal care, the rate of births attended by midwives, the rate of births in a health care facility, the rate of early initiation of breastfeeding, stunting and wasting prevalence and care-seeking for children under-five. As the outcome variable, we analysed the under-five mortality rate. Using reliable data from secondary sources, we calculated the difference and ratio of the best and worst-performing groups for 2006 and 2018-19 in Somalia and measured the changes between the two. RESULTS: Between 2006 and 2018-19, An increase in the difference between women with high and low incomes was noticed in terms of attended labours. Little change was noted regarding socioeconomic inequities in breastfeeding. The difference in the stunting prevalence between the highest and lowest income children decreased by 20.5 points, and the difference in the wasting prevalence of the highest and the lowest income children decreased by 9% points. Care-seeking increased by 31.1% points. Finally, although under-five mortality rates have decreased in the study period, a marked income slope remains. CONCLUSIONS: The study's findings indicate that Somalia achieved significant progress in reducing malnutrition inequalities in children, a positive development that may have also contributed to the decrease in under-five mortality rate inequities also reported in this study. However, an increase in inequalities related to access to contraception and healthcare for mothers is shown, as well as for care-seeking for sick children under the age of five. To ensure that all mothers and children have equal access to healthcare, it is crucial to enhance efforts in providing essential quality healthcare services and distributing them fairly and equitably across Somalia.

The infant health effects of doulas: Leveraging big data and machine learning to inform cost-effective targeting.

Doula services represent an underutilized maternal and child health intervention with the potential to improve outcomes through the provision of physical, emotional, and informational support. However, there is limited evidence of the infant health effects of doulas despite well-established connections between maternal and infant health. Moreover, because the availability of doulas is limited and often not covered by insurers, existing evidence leaves unclear if or how doula services should be allocated to achieve the greatest improvements in outcomes. We use unique data and machine learning to develop accurate predictive models of infant health and doula service participation. We then combine these predictive models within the double machine learning method to estimate the effects of doula services. We show that while doula services reduce risk on average, the benefits of doula services increase as the risk of negative infant health outcomes increases. We compare these benefits to the costs of doula services under alternative allocation schemes and show that leveraging the risk predictions dramatically increases the cost effectiveness of doula services. Our results show the potential of big data and novel analytic methods to provide cost-effective support to those at greatest risk of poor outcomes.

Mothers' school starting age and infant health.

We study the effects of women's school starting age on the infant health of their offspring. In Spain, children born in December start school a year earlier than those born the following January, despite being essentially the same age. We follow a regression discontinuity design to compare the health at birth of the children of women born in January versus the previous December, using administrative, population-level data. We find small and insignificant effects on average weight at birth, but, compared to the children of December-born mothers, the children of January-born mothers are more likely to have very low birthweight. We then show that January-born women have the same educational attainment and the same partnership dynamics as December-born women. However, they finish school later and are (several months) older when they have their first child. Our results suggest that maternal age is a plausible mechanism behind our estimated impacts of school starting age on infant health.

Roadway construction as a natural experiment to examine air pollution impacts on infant health.

Traffic-related air pollution (TRAP) poses a significant public health risk that is associated with adverse birth outcomes. Large roadway infrastructure projects present a natural experiment to examine how resulting congestion change is associated with adverse birth outcomes for nearby populations. This study is designed to examine the influence of living close to a roadway before, during, and after a construction project using a difference-in-differences design. We integrated data on all large roadway construction projects (defined as widening of existing roads, building new roads, improving bridges, installing intelligent transportation systems, improving intersections, and installing or upgrading traffic signals) in Texas from 2007 to 2016 with Vital Statistic data for all births with residential addresses within 1 km of construction projects. Our outcomes included term low birth weight, term birth weight, preterm birth, and very preterm birth. Using a difference-in-differences design, we included births within 3 years of construction start and 2 years of construction end. In our main model, the exposed group is limited to pregnant individuals residing within 300 m of a construction project, and the control group includes those living within 300-1000 m from a project. We used regression models to estimate the influence of construction on infant health. We included 1,360 large roadway construction projects linked to 408,979 births. During construction, we found that the odds of term low birth weight increased by 19% (95% CI: 1.05, 1.36). However, we saw little evidence of an association for other birth outcomes. Contrary to our hypothesis of decreased TRAP after construction ends, we did not observe consistent improvements post-construction for pregnant individuals living within 300 m. Continued consideration of the influence of traffic congestion programs on birth outcomes is necessary to inform future policy decisions.

Exploring the implementation of an SMS-based digital health tool on maternal and infant health in informal settlements.

BACKGROUND: The rapid urbanization of Kenya has led to an increase in the growth of informal settlements. There are challenges with access to maternal, newborn, and child health (MNCH) services and higher maternal mortality rates in settlements. The Kuboresha Afya Mitaani (KAM) study aimed to improve access to MNCH services. We evaluate one component of the KAM study, PROMPTS (Promoting Mothers through Pregnancy and Postpartum), an innovative digital health intervention aimed at improving MNCH outcomes. PROMPTS is a two-way AI-enabled SMS-based platform that sends messages to pregnant and postnatal mothers based on pregnancy stage, and connects mothers with a clinical help desk to respond and refer urgent cases in minutes. METHODS: PROMPTS was rolled out in informal settlements in Mathare and Kawangware in Nairobi County. The study adopted a pre-post intervention design, comparing baseline and endline population outcomes (1,416 participants, Baseline = 678, Endline = 738). To further explore PROMPTS's effect, outcomes were compared between endline participants enrolled and not enrolled in PROMPTS (738 participants). Outcomes related to antenatal (ANC) and postnatal (PNC) service uptake and knowledge were assessed using univariate and multivariate linear and logistic regression. RESULTS: Between baseline and enldine, mothers were 1.85 times more likely to report their babies and 1.88 times more likely to report themselves being checked by a provider post-delivery. There were improvements in moms and babies receiving care on time. 45% of the 738 endline participants were enrolled in the PROMPTS program, with 87% of these participants sending at least one message to the system. Enrolled mothers were 2.28 times more likely to report completing four or more ANC visits relative to unenrolled mothers. Similarly, enrolled mothers were 4.20 times more likely to report their babies and 1.52 times more likely to report themselves being checked by a provider post-delivery compared to unenrolled mothers. CONCLUSIONS: This research demonstrates that a digital health tool can be used to improve care-seeking and knowledge levels among pregnant and postnatal women in informal settlements. Additional research is needed to refine and target solutions amongst those that were less likely to enroll in PROMPTS and to further drive improved MNCH outcomes amongst this population.

Effects of household composition on infant feeding and mother-infant health in northern Kenya.

BACKGROUND: Households with alloparents, individuals other than the mother who care for an infant, can shift members' roles and affect mother-infant health. AIMS: To investigate how household composition relates to infant feeding and infectious disease risk in mother-infant dyads, the team utilized data from breastfeeding dyads (n 208) surveyed during a prolonged drought and food scarcity in northern Kenya. METHODS: Households were classified by the presence/absence of potential alloparents, distinguishing non-siblings and siblings of the infant. Regression models for breastfeeding frequency, complementary feeding status, and recent infections (n 83) evaluated these outcomes' associations with household type while accounting for food insecurity, adjusted for infant age, infant sex, and maternal age. RESULTS: Household type was unassociated with breastfeeding frequency, but the presence of non-sibling alloparents interacted with food insecurity, predicting increasing breastfeeding frequency as food insecurity intensified among dyads living with non-sibling alloparents. Households with non-sibling alloparents were also inversely associated with complementary feeding but had no association with infection. Households with siblings were inversely associated with (protective against) infant and maternal infection. CONCLUSION: Further research is needed to understand the interactive influence of household social and food ecologies on mother-infant diet and health under diverse cultural rules and norms for alloparenting.

A Call to Action: Supporting Black Maternal and Infant Health Using the Collective Impact Model.

This commentary advocates for a comprehensive approach to addressing the Black maternal and infant health crisis, utilizing the collective impact model with health equity at its center. Black women in the United States face alarmingly high rates of maternal morbidity and mortality compared to white women. Black women are twice as likely to have premature and low birthweight babies than white women, exposing both the expectant woman and child to various health risks. This crisis stems from systemic racism, implicit bias in healthcare, and a lack of targeted health communications for pregnant Black women. The urgency of this situation requires a bold and unified response through collaboration and coordination among healthcare providers, local and grassroots community-based organizations (CBOs), and digital health communicators. A comprehensive Black maternal and infant health campaign embedded within the collective impact model and led by a dedicated backbone organization would facilitate the coordination and involvement of diverse stakeholders. Central to these efforts should be the acknowledgment that systemic racism perpetuates health inequities. Consequently, any initiatives to improve health outcomes should prioritize health equity by valuing and incorporating Black women's perspectives. This involves crafting a responsive strategy and placing Black women at the forefront of content creation, program strategy, and evaluation. Through a collaborative effort involving healthcare partners, CBOs, and health communicators, we can have an impact far more significant than any single initiative. Immediate action is needed to dismantle systemic barriers and ensure every Black woman and infant receives the care and support they deserve. Black maternal health disparities in the United States have been widely acknowledged and studied. It is well-established that Black women face significantly higher rates of maternal morbidity and mortality compared to their white counterparts, indicative of a severe healthcare crisis. This opinion piece contributes to the discourse by proposing a comprehensive solution grounded in the collective impact model, which emphasizes collaboration and coordination across various stakeholders. This approach represents a shift from past siloed efforts, aiming to tackle the urgent issue of Black maternal and infant health with a multidisciplinary approach centered on health equity.

Use of qualitative research in World Health Organisation guidelines: a document analysis.

BACKGROUND: Guidelines depend on effect estimates, usually derived from randomised controlled trials, to inform their decisions. Qualitative research evidence may improve decisions made but where in the process and the methods to do this have not been so clearly established. We sought to describe and appraise how qualitative research has been used to inform World Heath Organization guidance since 2020. METHODS: We conducted a document analysis of WHO guidelines from 2020 to 2022. We purposely sampled guidelines on the topics of maternal and newborn health (MANH) and infectious diseases, as most of the qualitative synthesis to date has been conducted on these topics, likely representing the 'best case' scenario. We searched the in-built repository feature of the WHO website and used standardised search terms to identify qualitative reporting. Using deductive frameworks, we described how qualitative evidence was used to inform guidelines and appraised the standards of this use. RESULTS: Of the 29 guidelines, over half used qualitative research to help guide decisions (18/29). A total of 8 of these used qualitative research to inform the guideline scope, all 18 to inform recommendations, and 1 to inform implementation considerations. All guidelines drew on qualitative evidence syntheses (QES), and five further supplemented this with primary qualitative research. Qualitative findings reported in guidelines were typically descriptive, identifying people's perception of the benefits and harms of interventions or logistical barriers and facilitators to programme success. No guideline provided transparent reporting of how qualitative research was interpreted and weighed used alongside other evidence when informing decisions, and only one guideline reported the inclusion of qualitative methods experts on the panel. Only a few guidelines contextualised their recommendations by indicating which populations and settings qualitative findings could be applied. CONCLUSIONS: Qualitative research frequently informed WHO guideline decisions particularly in the field of MANH. However, the process often lacked transparency. We identified unmet potential in informing implementation considerations and contextualisation of the recommendations. Use in these areas needs further methods development.

Prioritization of maternal and newborn health policies and their implementation in the eastern conflict affected areas of the Democratic Republic of Congo: a political economy analysis.

BACKGROUND: Maternal and neonatal mortality remains a major concern in the Democratic Republic of Congo (DRC), and the country's protracted crisis context exacerbates the problem. This political economy analysis examines the maternal and newborn health (MNH) prioritization in the DRC, focussing specifically on the conflict-affected regions of North and South Kivu. The aim is to understand the factors that facilitate or hinder the prioritization of MNH policy development and implementation by the Congolese government and other key actors at national level and in the provinces of North and South Kivu. METHODS: Using a health policy triangle framework, data collection consisted of in-depth interviews with key actors at different levels of the health system, combined with a desk review. Qualitative data were analysed using inductive and then deductive approaches, exploring the content, process, actor dynamics, contextual factors and gender-related factors influencing MNH policy development and implementation. RESULTS: The study highlighted the challenges of prioritizing policies in the face of competing health and security emergencies, limited resources and governance issues. The universal health coverage policy seems to offer hope for improving access to MNH services. Results also revealed the importance of international partnerships and global financial mechanisms in the development of MNH strategies. They reveal huge gender disparities in the MNH sector at all levels, and the need to consider cultural factors that can positively or negatively impact the success of MNH policies in crisis zones. CONCLUSIONS: MNH is a high priority in DRC, yet implementation faces hurdles due to financial constraints, political influences, conflicts and gender disparities. Addressing these challenges requires tailored community-based strategies, political engagement, support for health personnel and empowerment of women in crisis areas for better MNH outcomes.

How Did the COVID-19 Pandemic Affect Maternal and Neonatal Health?

OBJECTIVE: The aim of this study was to investigate the effects of the coronavirus disease 2019 (COVID-19) pandemic on the proportional growth of the fetus, maternal health, and neonatal outcomes. STUDY DESIGN: The study group (Group 1) included pregnant women with a history of COVID-19. Pregnant women who were hospitalized during the same period without COVID-19 were the control group (Group 2). Maternal and neonatal outcomes were compared between the groups. RESULTS: A total of 230 pregnant women and their infants were assessed. Group 1 (n = 74) had significantly higher rates of diabetes mellitus and hypertension than Group 2 (n = 156; p = 0.015 and 0.014, respectively). Premature birth and cesarean section rates were also significantly higher in Group 1 than in Group 2 (p = 0.001 and 0.040, respectively). While the rate of iatrogenic preterm birth was significantly higher in Group 1, the rate of spontaneous preterm birth was significantly higher in Group 2 (p = 0.049). Infants born to COVID-19-positive mothers had lower median gestational age, birth weight, and Apgar scores (p < 0.01). There was no significant difference between the groups in terms of the results of cord blood gas analysis (p > 0.05). The rate of admission to the neonatal intensive care unit (NICU) and need for mechanical ventilation was significantly higher in infants of COVID-19-positive mothers (p < 0.05 for both). The length of stay in the NICU was also significantly longer for the infants of COVID-19-positive mothers (p < 0.05). Birth weights decreased due to increased cases of iatrogenic preterm births (p < 0.05). However, ponderal indices (PIs) of newborns of pregnant COVID-19 mothers did not differ at birth (p > 0.05). CONCLUSION: COVID-19 is associated with low Apgar scores, increased risk of premature birth complications, and maternal comorbidities, with no effect on the PI and proportionate growth of the infant at birth. KEY POINTS: · No difference in ponderal indices.. · No difference in postnatal cardiovascular adaptation.. · COVID-19 is frequent in pregnant women with comorbidities like diabetes mellitus and hypertension..

Child Neurodevelopment After Multidomain Interventions From Preconception Through Early Childhood: The WINGS Randomized Clinical Trial.

Importance: Multidomain interventions in pregnancy and early childhood have improved child neurodevelopment, but little is known about the effects of additional preconception interventions. Objective: To evaluate the effect of a multifaceted approach including health; nutrition; water, sanitation, and hygiene (WASH); and psychosocial support interventions delivered during the preconception period and/or during pregnancy and early childhood on child neurodevelopment. Design, Setting, and Participants: In this randomized trial involving low- and middle-income neighborhoods in Delhi, India, 13 500 participants were assigned to preconception interventions or routine care for the primary outcome of preterm births and childhood growth. Participants who became pregnant were randomized to pregnancy and early childhood interventions or routine care. Neurodevelopmental assessments, the trial's secondary outcome reported herein, were conducted in a subsample of children at age 24 months, including 509 with preconception, pregnancy, and early childhood interventions; 473 with preconception interventions alone; 380 with pregnancy and early childhood interventions alone; and 350 with routine care. This study was conducted from November 1, 2000, through February 25, 2022. Interventions: Health, nutrition, psychosocial care and support, and WASH interventions delivered during preconception, pregnancy, and early childhood periods. Main Outcomes and Measures: Cognitive, motor, language, and socioemotional performance at age 24 months, assessed using the Bayley Scales of Infant and Toddler Development 3 tool. Results: The mean age of participants at enrollment was 23.8 years (SD, 3.0 years). Compared with the controls at age 24 months, children in the preconception intervention groups had higher cognitive scores (mean difference [MD], 1.16; 98.3% CI, 0.18-2.13) but had similar language, motor, and socioemotional scores as controls. Those receiving pregnancy and early childhood interventions had higher cognitive (MD, 1.48; 98.3% CI, 0.49-2.46), language (MD, 2.29; 98.3% CI, 1.07-3.50), motor (MD, 1.53; 98.3% CI, 0.65-2.42), and socioemotional scores (MD, 4.15; 98.3% CI, 2.18-6.13) than did controls. The pregnancy and early childhood group also had lower incidence rate ratios (RRs) of moderate to severe delay in cognitive (incidence RR, 0.62; 98.3% CI, 0.40-0.96), language (incidence RR, 0.73; 98.3% CI, 0.57-0.93), and socioemotional (incidence RR, 0.49; 98.3% CI, 0.24-0.97) development than did those in the control group. Children in the preconception, pregnancy, and early childhood intervention group had higher cognitive (MD, 2.60; 98.3% CI, 1.08-4.12), language (MD, 3.46; 98.3% CI, 1.65-5.27), motor (MD, 2.31; 98.3% CI, 0.93-3.69), and socioemotional (MD, 5.55; 98.3% CI, 2.66-8.43) scores than did those in the control group. Conclusions and Relevance: Multidomain interventions during preconception, pregnancy and early childhood led to modest improvements in child neurodevelopment at 24 months. Such interventions for enhancing children's development warrant further evaluation. Trial Registration: Clinical Trials Registry-India CTRI/2017/06/008908.

The effects of fermented food consumption in pregnancy on neonatal and infant health: An integrative review.

OBJECTIVE: This study was carried out to determine the effects of fermented food in maternal diet during pregnancy on neonatal and infant health. INTRODUCTION: Fermented food consumption positively affects microbiota development. It is widely acknowledged that maternal microbiota is a crucial component in the microbiota formation of the newborn. However, the short-term and long-term effects of fermented food consumption during pregnancy on newborns/infants have not been fully investigated so far. INCLUSION CRITERIA: The study included studies that were randomized controlled, quasi-experimental, pre-test and post-test controlled, cohort, descriptive and qualitative studies published in English with full-text access and with "moderate" or "strong" scores in quality assessment. METHODS: The researchers conducted research on Pubmed, Google Scholar, Web of Science, Scopus, Clinical Keys, Cochrane and Ebsco-Host databases without any time limitation. RESULTS: As a result, 1419 articles were reviewed and five studies were selected among which two studies demonstrated that fermented food consumption during pregnancy may reduce the risk of atopic dermatitis in the infant, and another study indicated that it may reduce the risk of food protein-induced allergic proctocolitis. One cohort study also reported that fermented food consumption during pregnancy improved sleep duration while another cohort study pointed out that it increased the birth weight of infants. CONCLUSION: Evidence supports the positive effects of including fermented foods in pregnancy nutrition on neonatal and infant health. Fermented products can be added to the daily diet as an alternative to probiotic supplements. By adding these foods to the nutritional guidelines, awareness of pregnant women can be raised.

Predictors of parenting difficulties at the 18-month health checkups: A retrospective study using administrative data from infant health checkups.

OBJECTIVE: This study aimed to identify predictors of parenting difficulties at 18 months from the results of the 4-, 6-7-, and 9-10-month infant health checkups among caregivers who had not experienced difficulties at 4 months. DESIGN AND SAMPLES: This retrospective study used data from infant health checkups conducted in a city in Tokyo from November 2019 to October 2021. The participants were caregiver-child dyads of children who had undergone four checkups. Low birthweight, preterm, and multiple birth infants, and caregivers who experienced difficulties at 4 months were excluded. MEASUREMENTS: Data included caregiver, child-rearing environment, and child factors at the 4-, 6-7-, and 9-10-month checkups and caregivers' self-reported parenting difficulties at the 18-month checkup. RESULTS: Of the 555 caregivers, 48 (8.6%) experienced parenting difficulties at 18 months. Logistic regression analyses showed that mothers' physical condition (4 months), children being male, abnormal child growth (4 months), less than 10th percentile for children's height (6-7 and 9-10 months), and abnormal examination results (6-7 months) were significantly associated with parenting difficulties at 18 months. CONCLUSIONS: To prevent child abuse, public health nurses should consider the identified factors to detect and support caregivers with emerging parenting difficulties.

[Associations between mothers' economic insecurity and mood and thoughts on life with children at infants' 3-month check-ups: A cross-sectional study using data from infant health check-ups].

Objectives　We aimed to clarify the relationship between economic insecurity and the psychological profiles of mothers raising infants by analyzing data from three-month health check-ups in relation to the birth population in order to generate basic data that can be used to consider support for families facing economic insecurity.Methods　The study area was a neighborhood in a major Japanese city. The survey focused on 1013 mothers who had received health check-ups for children aged 18 months between November 2017 and October 2019. The data included in the analysis were data from the children's three-month health check-ups and survey data from 908 mothers who responded to the questionnaire and consented to the use of their health check-up data. After excluding data from potential participants who were not mothers or had multiple births, data from 847 participants were analyzed (valid response rate: 93.3%).　The objective variables were mothers' mood and thoughts about life with their children at the time of the three-month check-up as the mothers' psychological profiles. The explanatory variable was the presence or absence of maternal economic insecurity, and logistic regression analysis was conducted, adjusted for the children's sex and birth order, presence or absence of maternal counselors, and the mothers' educational attainment.Results　A total of 60 (7.1%) mothers were economically insecure. Of the mothers' moods, 122 (14.4%) reported feeling anxious, followed by 36 (4.3%) who reported feeling lonely. Of their thoughts on life with their children, 776 (91.6%) mothers reported that they enjoyed it, and 567 (66.9%) reported that they were happy to be parents. On the other hand, 157 (18.5%) reported feeling frustrated, and 75 (8.9%) reported that the lack of time for themselves was painful. Economically insecure mothers had an odds ratio of 5.59 (95% confidence interval, 2.49-12.55) for feeling lonely, 4.77 (2.67-8.54) for feeling anxious, and 2.70 (1.50-4.86) for feeling frustrated, all significantly higher than in mothers not facing economic insecurity.Conclusion　Economic insecurity among mothers at the time of the three-month check-up was associated with the psychological states of loneliness, anxiety, and frustration about living with their children. It was suggested that to solve economically insecure mothers' problems, they need support, including connecting them with social welfare services, so that they will be able to raise their children in a more stable environment.

Maternal microbiota and gestational diabetes: impact on infant health.

Gestational diabetes mellitus (GDM) is a common complication of pregnancy that has been associated with an increased risk of obesity and diabetes in the offspring. Pregnancy is accompanied by tightly regulated changes in the endocrine, metabolic, immune, and microbial systems, and deviations from these changes can alter the mother's metabolism resulting in adverse pregnancy outcomes and a negative impact on the health of her infant. Maternal microbiomes are significant drivers of mother and child health outcomes, and many microbial metabolites are likely to influence the host health. This review discusses the current understanding of how the microbiota and microbial metabolites may contribute to the development of GDM and how GDM-associated changes in the maternal microbiome can affect infant's health. We also describe microbiota-based interventions that aim to improve metabolic health and outline future directions for precision medicine research in this emerging field.

Effects of HIV infection and/or malaria on maternal and neonatal health in a high-prevalence setting.

OBJECTIVE: HIV infection and malaria have been associated with different complications during pregnancy and delivery. HIV-positive pregnant women are at increased risk for all adverse outcomes of malaria during pregnancy. The main objective was to analyse the obstetric and perinatal consequences of malaria, HIV infection and HIV/malaria co-infection in pregnant women and newborns, which has been less well evaluated. METHODS: A cross-sectional study was carried out in the Maternity Service of the Provincial Hospital of Tete Mozambique, involving completion of a structured questionnaire that included demographic data, and information on the current pregnancy, delivery and the newborn. In total, 819 women (13-45 years old) in the immediate postpartum period were enrolled between 1 March and 31 October 2016. RESULTS: The overall prevalence of HIV and malaria, considered separately, in pregnant women was ~12% (103 women with HIV and 101 with malaria). Only one-fifth of HIV-infected women knew their HIV status before pregnancy. A significantly higher proportion of women with HIV attended four or more antenatal care visits than women without HIV. Caesarean section was less frequent in HIV patients, and peripartum urinary infection was more frequent than in seronegative women (13/103 [12.6%] vs. 34/716 [4.7%]). HIV/malaria co-infection were 17/819 (2%) and was significantly associated with the development of pre-eclampsia when HIV-infected patients received anti-retroviral treatment, and with an increase in urinary tract infections around delivery. With respect to the newborn, co-infection increased the frequency of early neonatal death, as well as neonatal asphyxia and jaundice. CONCLUSIONS: In Mozambique, the prevalence of malaria and HIV infection in women of childbearing age continues to be high and contributes additively to complications during pregnancy and childbirth, and in the newborn. Therefore, integrating HIV, malaria and reproductive health services is essential if maternal and foetal outcomes are to improve.

Associations between ambient temperature and pregnancy outcomes from three south Asian sites of the Global Network Maternal Newborn Health Registry: A retrospective cohort study.

OBJECTIVE: Growing evidence suggests that environmental heat stress negatively influences fetal growth and pregnancy outcomes. However, few studies have examined the impact of heat stress on pregnancy outcomes in low-resource settings. We combined data from a large multi-country maternal-child health registry and meteorological data to assess the impacts of heat stress. DESIGN: Retrospective cohort study. SETTING: Three sites based in south Asia as part of the Global Network for Women's and Children's Health research in India (Belagavi and Nagpur) and Pakistan (Thatta). POPULATION OR SAMPLE: Data from women enrolled between 2014 and 2020 in the Global Network's Maternal Newborn Health Registry (MNHR), a prospective, population-based registry of pregnancies, were used. METHODS: A total of 126 273 pregnant women were included in this analysis. Daily maximal air temperatures (Tmax ) were acquired from local meteorological records. Associations between averages of daily maximal temperatures for each trimester and main outcomes were analysed using a modified Poisson regression approach. MAIN OUTCOMES MEASURES: Incidence of stillbirth, preterm birth, low birthweight (<2500 g) or evidence of pregnancy hypertension or pre-eclampsia. RESULTS: In the overall cohort, risk of preterm birth was positively associated with greater temperature in the second trimester (relative risk [RR] 1.05, 95% CI 1.02-1.07, p = 0.0002). Among individual sites, the risk of preterm birth was greatest in Nagpur (RR 1.07, 95% CI 1.03-1.11, p = 0.0005) and associated with second-trimester temperature. The overall risk of low birthweight was associated with ambient temperature in second trimester (RR 1.02, 95% CI 1.01-1.04, p = 0.01). The risk for LBW was associated with first-trimester heat in Thatta and with second-trimester heat in Nagpur. Finally, the overall risk of gestational hypertensive disease was associated with greater temperature in the third trimester among all sites (RR 1.07, 95% CI 1.02-1.12, p = 0.005) and was particularly significant for Nagpur (RR 1.13, 95% CI 1.05-1.23, p = 0.002). These findings highlight the increased risk of detrimental obstetric and neonatal outcomes with greater temperature. CONCLUSION: In a multi-country, community-based study, greater risk of adverse outcomes was observed with increasing temperature. The study highlights the need for deeper understanding of covarying factors and intervention strategies, especially in regions where high temperatures are common.