Experiences Navigating the Pregnancy Care Continuum During the COVID-19 Pandemic

Introduction: The COVID-19 pandemic led to unprecedented changes in care delivery across the pregnancy care continuum. Our primary objective with this research was to characterize the range of ways that the early months of the COVID-19 pandemic affected pregnancy, childbirth, and postpartum care experiences. Methods: Pregnant and recently pregnant patients (n = 20) from obstetrics and gynecology clinical sites associated with Massachusetts General Hospital were interviewed about their experiences with prenatal care, childbirth, and postpartum care during the first wave of the COVID-19 pandemic. Interview transcripts were analyzed for emergent themes. Results: This sample included 20 pregnant and postpartum people, including 11 individuals who tested positive for COVID-19 during pregnancy or postpartum and nine with suspected infection. The ways in which COVID-19 or suspected COVID-19 affected experiences of prenatal care, childbirth, and postpartum care were complex and varied. Three themes were identified across narratives of pregnancy, birth, and postpartum care: patient perceptions of diminished access to care, stigma due to COVID-19 infection, and limited capacity of providers to honor patient preferences. Conclusions: A better understanding of pregnant and recently pregnant people's experiences during the early months of the COVID-19 pandemic can inform infection control policies and clinical care delivery practices that are more congruent with the needs and values of pregnant, birthing, and postpartum people as institutions craft responses to future pandemics. Approaches that maximize meaningful access across the pregnancy care continuum, center patients' priorities within adapted care models, and honor patient preferences as much as possible are important aspects of an appropriate response to future waves of COVID-19 and other pandemics

Molecular cloud structure in the Magellanic Clouds: e_ect of metallicity

Wetensch. publicatieFaculteit der Wiskunde en Natuurwetenschappe

Molecular Cloud Structure in the Magellanic Clouds: Effect of Metallicity

The chemical structure of neutral clouds in low metallicity environments is examined with particular emphasis on the H to H_2 and C+ to CO transitions. We observed near-IR H_2 lines and the CO J=1-0 line from 30 Doradus and N159/N160 in the Large Magellanic Cloud and from DEM S 16, DEM S 37, and LI-SMC 36 in the Small Magellanic Cloud. We find that the H_2 emission is UV-excited and that (weak) CO emission always exists (in our surveyed regions) toward positions where H_2 and [CII] emission have been detected. Using a PDR code and a radiative transfer code, we simulate the emission of line radiation from spherical clouds and from large planar clouds. Because the [CII] emission and H_2 emission arise on the surface of the cloud and the lines are optically thin, these lines are not affected by changes in the relative sizes of the neutral cloud and the CO bearing core, while the optically thick CO emission can be strongly affected. The sizes of clouds are estimated by measuring the deviation of CO emission strength from that predicted by a planar cloud model of a given size. The average cloud column density and therefore size increases as the metallicity decreases. Our result agrees with the photoionization regulated star formation theory by Mc Kee (1989).Comment: 45 Pages including 15 figures. To be published in the ApJ May 10, 1998 issue, Vol. 49

The integrated Sachs-Wolfe Effect -- Large Scale Structure Correlation

We discuss the correlation between late-time integrated Sachs-Wolfe (ISW) effect in the cosmic microwave background (CMB) temperature anisotropies and the large scale structure of the local universe. This correlation has been proposed and studied in the literature as a probe of the dark energy and its physical properties. We consider a variety of large scale structure tracers suitable for a detection of the ISW effect via a cross-correlation. In addition to luminous sources, we suggest the use of tracers such as dark matter halos or galaxy clusters. A suitable catalog of mass selected halos for this purpose can be constructed with upcoming wide-field lensing and Sunyaev-Zel'dovich (SZ) effect surveys. With multifrequency data, the presence of the ISW-large scale structure correlation can also be investigated through a cross-correlation of the frequency cleaned SZ and CMB maps. While convergence maps constructed from lensing surveys of the large scale structure via galaxy ellipticities are less correlated with the ISW effect, lensing potentials that deflect CMB photons are strongly correlated and allow, probably, the best mechanism to study the ISW-large scale structure correlation with CMB data alone.Comment: 10 Pages, PRD submitte

Photon - dominated regions in low UV fields: a study of the peripheral regions of L1204 /S140

Wetensch. publicatieFaculteit der Wiskunde en Natuurwetenschappe

Weak H_2 Emission From Diffuse And Translucent Clouds

We present the first results of a survey for the lowest pure-rotational lines of H 2 with the ISO-SWS in a number of well-studied low-density diffuse and translucent clouds. The data are compared with those of the high-density PDR IC 63, for which H 2 lines up to S(5) are detected, and of the "cool" PDR Cederblad 201. Searches for the S(0) line at 28.218 ¯m and the S(1) line at 17.035 ¯m have been performed for the diffuse cloud along the line of sight toward i Oph, the translucent clouds toward HD 94413 and HD 154368, the high-latitude cloud MBM 55D, as well as the translucent outskirts of the S 140 molecular cloud. The lines are not detected in diffuse clouds down to ¸0.3--0.5 Jy (2oe). They are weakly observed in the peripheral regions of S 140, where their intensities are more than an order of magnitude less than at the peak of the PDR. The observations are compared with available physical models based on optical absorption and/or millimeter emission line data, and, in the case ..