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Population-level data on COVID-19 vaccine uptake in pregnancy and SARS-CoV-2 infection outcomes are lacking. We describe COVID-19 vaccine uptake and SARS-CoV-2 infection in pregnant women in Scotland, using whole-population data from a national, prospective cohort. Between the start of a COVID-19 vaccine program in Scotland, on 8 December 2020 and 31 October 2021, 25,917 COVID-19 vaccinations were given to 18,457 pregnant women. Vaccine coverage was substantially lower in pregnant women than in the general female population of 18−44 years; 32.3% of women giving birth in October 2021 had two doses of vaccine compared to 77.4% in all women. The extended perinatal mortality rate for women who gave birth within 28 d of a COVID-19 diagnosis was 22.6 per 1,000 births (95% CI 12.9−38.5; pandemic background rate 5.6 per 1,000 births; 452 out of 80,456; 95% CI 5.1−6.2). Overall, 77.4% (3,833 out of 4,950; 95% CI 76.2−78.6) of SARS-CoV-2 infections, 90.9% (748 out of 823; 95% CI 88.7−92.7) of SARS-CoV-2 associated with hospital admission and 98% (102 out of 104; 95% CI 92.5−99.7) of SARS-CoV-2 associated with critical care admission, as well as all baby deaths, occurred in pregnant women who were unvaccinated at the time of COVID-19 diagnosis. Addressing low vaccine uptake rates in pregnant women is imperative to protect the health of women and babies in the ongoing pandemic. Findings from the COVID-19 in Pregnancy in Scotland (COPS) study reveals low levels of vaccination uptake by pregnant women compared to women in the general population and that not being vaccinated is associated with increased risk of severe complications of COVID-19 in pregnancy, including perinatal mortality.

Understanding the impact of SARS-CoV-2 infection and COVID-19 vaccination in pregnancy on neonatal and maternal outcomes informs clinical decision-making. Here we report a national, population-based, matched cohort study to investigate associations between SARS-CoV-2 infection and, separately, COVID-19 vaccination just before or during pregnancy and the risk of adverse neonatal and maternal outcomes among women in Scotland with a singleton pregnancy ending at ≥20 weeks gestation. Neonatal outcomes are stillbirth, neonatal death, extended perinatal mortality, preterm birth (overall, spontaneous, and provider-initiated), small-for-gestational age, and low Apgar score. Maternal outcomes are admission to critical care or death, venous thromboembolism, hypertensive disorders of pregnancy, and pregnancy-related bleeding. We use conditional logistic regression to derive odds ratios adjusted for socio-demographic and clinical characteristics (aORs). We find that infection is associated with an increased risk of preterm (aOR=1.36, 95% Confidence Interval [CI] = 1.16–1.59) and very preterm birth (aOR = 1.90, 95% CI 1.20–3.02), maternal admission to critical care or death (aOR=1.72, 95% CI = 1.39–2.12), and venous thromboembolism (aOR = 2.53, 95% CI = 1.47–4.35). We find no evidence of increased risk for any of our outcomes following vaccination. These data suggest SARS-CoV-2 infection during pregnancy is associated with adverse neonatal and maternal outcomes, and COVID-19 vaccination remains a safe way for pregnant women to protect themselves and their babies against infection. The impacts of SARS-CoV-2 infection and COVID-19 vaccination in pregnancy are not fully understood. Here, the authors perform a cohort study using data from Scotland and find that infection was associated with increased risk of preterm birth and some adverse maternal outcomes, but there was no evidence of adverse outcomes associated with vaccination.

Data on the safety of COVID-19 vaccines in early pregnancy are limited. We conducted a national, population-based, matched cohort study assessing associations between COVID-19 vaccination and miscarriage prior to 20 weeks gestation and, separately, ectopic pregnancy. We identified women in Scotland vaccinated between 6 weeks preconception and 19 weeks 6 days gestation (for miscarriage; n = 18,780) or 2 weeks 6 days gestation (for ectopic; n = 10,570). Matched, unvaccinated women from the pre-pandemic and, separately, pandemic periods were used as controls. Here we show no association between vaccination and miscarriage (adjusted Odds Ratio [aOR], pre-pandemic controls = 1.02, 95% Confidence Interval [CI] = 0.96–1.09) or ectopic pregnancy (aOR = 1.13, 95% CI = 0.92–1.38). We undertook additional analyses examining confirmed SARS-CoV-2 infection as the exposure and similarly found no association with miscarriage or ectopic pregnancy. Our findings support current recommendations that vaccination remains the safest way for pregnant women to protect themselves and their babies from COVID-19. Data on the safety of COVD-19 vaccines in early pregnancy are limited. Here, the authors assess the rates of miscarriage and ectopic pregnancy following vaccination using electronic health record data from Scotland, and find no evidence of increased risks.

Evidence on associations between COVID-19 vaccination or SARS-CoV-2 infection and the risk of congenital anomalies is limited. Here we report a national, population-based, matched cohort study using linked electronic health records from Scotland (May 2020-April 2022) to estimate the association between COVID-19 vaccination and, separately, SARS-CoV-2 infection between six weeks pre-conception and 19 weeks and six days gestation and the risk of [1] any major congenital anomaly and [2] any non-genetic major congenital anomaly. Mothers vaccinated in this pregnancy exposure period mostly received an mRNA vaccine (73.7% Pfizer-BioNTech BNT162b2 and 7.9% Moderna mRNA-1273). Of the 6731 babies whose mothers were vaccinated in the pregnancy exposure period, 153 had any anomaly and 120 had a non-genetic anomaly. Primary analyses find no association between any vaccination and any anomaly (adjusted Odds Ratio [aOR] = 1.01, 95% Confidence Interval [CI] = 0.83-1.24) or non-genetic anomalies (aOR = 1.00, 95% CI = 0.81-1.22). Primary analyses also find no association between SARS-CoV-2 infection and any anomaly (aOR = 1.02, 95% CI = 0.66-1.60) or non-genetic anomalies (aOR = 0.94, 95% CI = 0.57-1.54). Findings are robust to sensitivity analyses. These data provide reassurance on the safety of vaccination, in particular mRNA vaccines, just before or in early pregnancy. The risks of major congenital anomalies associated with SARS-CoV-2 vaccination in early pregnancy are not well understood. Here, the authors conduct a population-based cohort study using electronic health records from Scotland and find no evidence of an association, supporting vaccine safety in pregnancy.

Hugely concerning changes to health outcomes have been observed in the UK since the early 2010s, including reductions in life expectancy and widening of inequalities. These have been attributed to UK Government ‘austerity’ policies which have profoundly affected poorer populations. Studies in mainland Europe have shown associations between austerity and increases in adverse birth outcomes such as low birthweight (LBW). The aim here was to establish whether the period of UK austerity was also associated with higher risks of such outcomes. We analysed all live births in Scotland between 1981 and 2019 (n = 2.3 million), examining outcomes of LBW, preterm birth (PB) and small-for-gestational-age (SGA). Descriptive trend analyses, segmented regression (to identify changes in trends) and logistic regression modelling (to compare risk of outcomes between time periods) were undertaken, stratified by infant sex and quintiles of socioeconomic deprivation. There were marked increases in LBW and PB rates in the austerity period, particularly in the most deprived areas. However, rates of SGA decreased, suggesting prematurity as the main driver of LBW rather than intrauterine growth restriction. The regression analyses confirmed these results: trends in LBW and PB changed within 1–3 years of the period in which austerity was first implemented, and that period was associated with higher risk of such outcomes in adjusted models. The results add to the European evidence base of worsening birth outcomes associated with austerity-related economic adversity. The newly elected UK government needs to understand the causes of these changes, and the future implications for child and adult health.

•A high proportion (>75%) of Scottish adults received all recommended doses during the study period.•Almost half a million adults with one COVID-19 vaccine did not receive all recommended doses.•Age was the biggest predictor of incomplete vaccination.•Household, demographic, and health factors are predictive of incomplete vaccination.•Several risk factors are associated with severe COVID-19 outcomes and incomplete vaccination. Vaccination continues to be the key public health measure for preventing severe COVID-19 outcomes. Certain groups may be at higher risk of incomplete vaccine schedule, which may leave them vulnerable to COVID-19 hospitalisation and death. To identify the sociodemographic and clinical predictors for not receiving a scheduled COVID-19 vaccine after previously receiving one. We conducted two retrospective cohort studies with ≥3.7 million adults aged ≥18 years in Scotland. Multivariable logistic regression was used to estimate adjusted odds ratios (aOR) of not receiving a second, and separately a third dose between December 2020 and May 2022. Independent variables included sociodemographic and clinical factors. Of 3,826,797 people in the study population who received one dose, 3,732,596 (97.5%) received two doses, and 3,263,153 (86.5%) received all doses available during the study period. The most strongly associated predictors for not receiving the second dose were: being aged 18–29 (reference: 50–59 years; aOR:4.26; 95% confidence interval (CI):4.14–4.37); hospitalisation due to a potential vaccine related adverse event of special interest (AESI) (reference: not having a potential AESI, aOR:3.78; 95%CI: 3.29–4.35); and living in the most deprived quintile (reference: least deprived quintile, aOR:3.24; 95%CI: 3.16–3.32). The most strongly associated predictors for not receiving the third dose were: being 18–29 (reference: 50–59 years aOR:4.44; 95%CI: 4.38–4.49), living in the most deprived quintile (reference: least deprived quintile aOR:2.56; 95%CI: 2.53–2.59), and Black, Caribbean, or African ethnicity (reference: White ethnicity aOR:2.38; 95%CI: 2.30–2.46). Pregnancy, previous vaccination with mRNA-1273, smoking history, individual and household severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) positivity, and having an unvaccinated adult in the household were also associated with incomplete vaccine schedule. We observed several risk factors that predict incomplete COVID-19 vaccination schedule. Vaccination programmes must take immediate action to ensure maximum uptake, particularly for populations vulnerable to severe COVID-19 outcomes.

ObjectivesTo examine neonates in Scotland aged 0–27 days with SARS-CoV-2 infection confirmed by viral testing; the risk of confirmed neonatal infection by maternal and infant characteristics; and hospital admissions associated with confirmed neonatal infections.DesignPopulation-based cohort study.Setting and populationAll live births in Scotland, 1 March 2020–31 January 2022.ResultsThere were 141 neonates with confirmed SARS-CoV-2 infection over the study period, giving an overall infection rate of 153 per 100 000 live births (141/92 009, 0.15%). Among infants born to women with confirmed infection around the time of birth, the confirmed neonatal infection rate was 1812 per 100 000 live births (15/828, 1.8%). Two-thirds (92/141, 65.2%) of neonates with confirmed infection had an associated admission to neonatal or (more commonly) paediatric care. Six of these babies (6/92, 6.5%) were admitted to neonatal and/or paediatric intensive care; however, none of these six had COVID-19 recorded as their main diagnosis. There were no neonatal deaths among babies with confirmed infection.Implications and relevanceConfirmed neonatal SARS-CoV-2 infection was uncommon over the first 23 months of the pandemic in Scotland. Secular trends in the neonatal confirmed infection rate broadly followed those seen in the general population, although at a lower level. Maternal confirmed infection at birth was associated with an increased risk of neonatal confirmed infection. Two-thirds of neonates with confirmed infection had an associated admission to hospital, with resulting implications for the baby, family and services, although their outcomes were generally good. Ascertainment of confirmed infection depends on the extent of testing, and this is likely to have varied over time and between groups: the extent of unconfirmed infection is inevitably unknown.

ObjectiveTo investigate the incidence of confirmed SARS-CoV-2 infection in neonates (babies aged 0–27 days inclusive) born in Scotland and assess maternal/infant characteristics of cases and hospital admission rates.MethodsThis was a population-based cohort study from 1st March 2020 to 31st January 2022. Data on all pregnancies and resulting live births in Scotland were obtained from the ‘COVID-19 in Pregnancy in Scotland’ (COPS) study dataset. The COPS dataset contained linked information on results of community and in-hospital SARS-CoV-2 viral testing; hospital admissions (including to neonatal units, paediatric wards and paediatric/neonatal intensive care units) and deaths among neonates; and maternal information including SARS-CoV-2 status at delivery, age, ethnicity and Scottish Index of Multiple Deprivation (SIMD) quintile. An admission was considered temporally associated with a baby’s SARS-CoV-2 infection if their first positive viral test occurred during, or in the 7 days prior to, the admission.ResultsLinked data were available for 92009 (of total 92032) livebirths and 141 (of 142) neonates with confirmed infection, with an infection rate of 153/100,000 live births (0.15%). The overall trend in infection rate followed that of the general paediatric population, albeit at a much lower level (figure 1). The infection rate was higher for babies born to mothers who tested positive for SARS-CoV-2 at the time of delivery; 1.8% (15/828) of these babies tested positive at some point in the first 27 days of life. Ninety-two babies (92/141, 65.2%) had a hospital admission which was temporally associated with their positive test (table 1). Six of these babies (6/92, 6.5%) had an episode in paediatric/neonatal intensive care but COVID-19 was not recorded as the main diagnosis in any of these cases. No neonate with a positive SARS-CoV-2 test died.ConclusionThis is the first population-wide study of SARS-CoV-2 in neonates which considers both those in the community and those admitted to hospital. We found that, during the first 23 months of the COVID-19 pandemic, confirmed neonatal SARS-CoV-2 infection was uncommon. Though almost 2/3 of neonates with a positive test were admitted, outcomes were good and admission to intensive care were lower than previously reported.1 2 Continued surveillance is important to monitor the ongoing impact of SARS-CoV-2 on neonates as the pandemic evolves.ReferencesSwann, et al. BMJ 2020.Swann, et al. Paed Res 2022.Abstract 113 Figure 1[Image Omitted. See PDF.]

The home language and literacy environment (HLLE) in infancy has been associated with subsequent pre-literacy skill development and HLLE at preschool-age has been shown to correlate with white matter organization in tracts that subserve pre-reading and reading skills. Furthermore, childhood socioeconomic status (SES) has been linked with both HLLE and white matter organization. It is important to understand whether the relationships between environmental factors such as HLLE and SES and white matter organization can be detected as early as infancy, as this period is characterized by rapid brain development that may make white matter pathways particularly susceptible to these early experiences. Here, we hypothesized that HLLE (1) relates to white matter organization in pre-reading and reading-related tracts in infants, and (2) mediates a link between SES and white matter organization. To test these hypotheses, infants (mean age: 8.6 ± 2.3 months, N = 38) underwent diffusion-weighted imaging MRI during natural sleep. Image processing was performed with an infant-specific pipeline and fractional anisotropy (FA) was estimated from the arcuate fasciculus (AF) and superior longitudinal fasciculus (SLF) bilaterally using the baby automated fiber quantification method. HLLE was measured with the Reading subscale of the StimQ (StimQ-Reading) and SES was measured with years of maternal education. Self-reported maternal reading ability was also quantified and applied to our statistical models as a proxy for confounding genetic effects. StimQ-Reading positively correlated with FA in left AF and to maternal education, but did not mediate the relationship between them. Taken together, these findings underscore the importance of considering HLLE from the start of life and may inform novel prevention and intervention strategies to support developing infants during a period of heightened brain plasticity.