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Background: The COVID-19 pandemic has highlighted the important role of professionals in designing and communicating effective policies. The purpose of this study was to evaluate the level of trust in the COVID-19 national public health policy among public health professionals in Israel and its correlates during the first wave of the pandemic. Methods: A purposive sampling of public health professionals in Israel, through professional and academic public health networks (N = 112). The survey was distributed online during May 2020. Level of trust was measured by the mean of 18 related statements using a 5-point Likert scale, where 1 means not at all and 5 means to a very high extent, and grouped as low and high trust by median (2.75). Results: A moderate level of trust in policy was found among professionals (Mean: 2.84, 95% Cl: [2.70, 2.98]). The level of trust among public health physicians was somewhat lower than among researchers and other health professionals (Mean: 2.66 vs. 2.81 and 2.96, respectively, p = 0.286), with a higher proportion expressing low trust (70% vs. 51% and 38%, respectively, p < 0.05). Participants with a low compared to high level of trust in policy were less supportive of the use of Israel Security Agency tools for contact tracing (Mean = 2.21 vs. 3.17, p < 0.01), and reported lower levels of trust in the Ministry of Health (Mean = 2.52 vs. 3.91, p < 0.01). A strong positive correlation was found between the level of trust in policy and the level of trust in the Ministry of Health (rs = 0.782, p < 0.01). Most professionals (77%) rated their involvement in decision making as low or not at all, and they reported a lower level of trust in policy than those with high involvement (Mean = 2.76 vs. 3.12, p < 0.05). Regarding trust in the ability of agencies to deal with the COVID-19 crisis, respondents reported high levels of trust in the Association of Public Health Physicians (80%) and in hospitals (79%), but very low levels of trust in the Minister of Health (5%). Conclusions: This study shows that Israeli public health professionals exhibited moderate levels of trust in COVID-19 national public health policy and varied levels of trust in government agencies during the first wave of COVID-19. The level of trust in policy was lower among most of the participants who were not involved in decision making. The level of trust found is worrisome and should be monitored, because it may harm cooperation, professional response, and public trust. Professionals' trust in policy-making during early stages of emergencies is important, and preemptive measures should be considered, such as involving professionals in the decision-making process, maintaining transparency of the process, and basing policy on scientific and epidemiological evidence. [ABSTRACT FROM AUTHOR]

Background: The developing fetus is susceptible to environmental insults. Studying the effects of environmental exposures on fetal growth is essential for understanding the causal pathway between prenatal exposures and pregnancy outcomes. Here we describe the Haifa Pregnancy Cohort Study (HPCS) and discuss challenges and opportunities in applying "big data" paradigm.Methods: Maccabi Healthcare Services (MHS), is the second largest Israeli health maintenance organization (HMO) providing care services to two million beneficiaries. The HPCS cohort potentially includes ~750,000 newborns born between 1998 and 2017. We will estimate daily exposures to air pollutants, temperature and greenness, using satellite-based data and models. We hypothesize that residents of Haifa have higher exposures to environmental pollutants and that in pregnant women this higher exposure is associated with poorer fetal growth. We will evaluate outcomes such as birth-weight, head-circumference and gestational age at birth. We will adjust for pregnancy complications such as pre-eclampsia and gestational diabetes and parental variables, such as maternal weight, age and smoking habits as potential confounders. In addition, we will conduct a multi-tiered field study, nested within this population, among 150 pregnant women residing in two geographical regions-one in the polluted Haifa area, and one in a relatively unpolluted area in central Israel. Blood and urinary samples will be collected, as well as personal and indoor exposure to air pollution.Discussion: Evaluating environmental exposures of pregnant women and assessing in utero growth over the course of the pregnancy during different exposure windows, is of great scientific and public health interest. Recent advances in data collection and analysis pose great promise to provide insights into contribution of environment to the health of the developing fetus, but also pose major challenges and pitfalls, such as data management, proper statistical framework and integration of data in the population-based study and selectiveness in the nested field study. Yet the continuing follow-up of the study cohort, integrating data from different services, health-promotion, and eventually, application later in real life of our main promises. Our study aims to meet these challenges and to provide evidence of the environmental exposures associated with fetal growth. [ABSTRACT FROM AUTHOR]