A Facile Strategy to Construct Anti-Swelling, Antibacterial, and Antifogging Coatings for Protection of Medical Goggles.

During the COVID-19 (Corona Virus Disease 2019) pandemic, traditional medical goggles are not only easy to attach bacteria and viruses in long-term exposure, but easy to fogged up, which increases the risk of infection and affects productivity. Bacterial adhesion and fog can be significantly inhibited through the hydrogel coatings, owing to super hydrophilic properties. On the one hand, hydrogel coatings are easy to absorb water and swell in wet environment, resulting in reduced mechanical properties, even peeling off. On the other hand, the hydrogel coatings don't have intrinsic antibacterial properties, which still poses a potential risk of bacterial transmission. Herein, an anti-swelling and antibacterial hydrogel coating is synthesized by 2-hydroxyethyl methacrylate (HEMA), acrylamide (AM), dimethylaminoethyl acrylate bromoethane (IL-Br), and poly(sodium-p-styrenesulfonate) (PSS). Due to the self-driven entropy reduction effect of polycation and polyanion, an ion cross-linking network is formed, which endows the hydrogel coating with excellent antiswelling performance. Moreover, because of the synergistic effect of highly hydrated surfaces and the active bactericidal effect from quaternary ammonium cations, the hydrogel coating exhibits outstanding antifouling performances. This work develops a facile strategy to fabricate anti-swelling, antifouling, and antifogging hydrogel coatings for the protection of medical goggles, and also for biomedical and marine antifouling fields.

Interconception Care for Adolescent Women During the COVID-19 Pandemic.

BACKGROUND AND OBJECTIVE: Interconception care (ICC) is a means of improving health outcomes for women and children by mitigating maternal risks between pregnancies. Within a pediatric medical home ICC is reliant on adherence to well-child visits (WCVs). We hypothesized that a pediatric-based ICC model would remain successful in providing access to services for adolescent women for those seen during the COVID19 pandemic. The objective of this study was to determine if the COVID19 pandemic influenced LARC use and repeat pregnancy for those seen for ICC in a dyadic pediatric medical home. METHODS: The pre-COVID cohort was comprised of adolescent women seen for ICC from September 2018-October 2019. The COVID cohort was comprised of adolescent women seen for ICC from March 2020-March 2021. The two cohorts were compared across multiple characteristics including sociodemographic factors, age, education, number of visits, contraceptive choice and repeat pregnancy during the study interval. RESULTS: The COVID cohort were significantly more likely to be primiparous, seen with a younger infant, and attend fewer visits than the pre-COVID cohort. The COVID cohort were equally likely to initiate long-acting reversible contraception but less likely to experience a repeat pregnancy. CONCLUSIONS: The COVID19 pandemic limited access to routine healthcare and likely impacted access to ICC for many women. ICC provided during WCVs allowed access to care even amid the restrictions of the COVID19 pandemic. Both effective contraception and decreased repeat pregnancy were maintained, highlighting the effectiveness of this approach for ICC within a dyadic pediatric medical home.

A prediction error based reversible data hiding scheme in encrypted image using block marking and cover image pre-processing.

A drastic change in communication is happening with digitization. Technological advancements will escalate its pace further. The human health care systems have improved with technology, remodeling the traditional way of treatments. There has been a peak increase in the rate of telehealth and e-health care services during the coronavirus disease 2019 (COVID-19) pandemic. These implications make reversible data hiding (RDH) a hot topic in research, especially for medical image transmission. Recovering the transmitted medical image (MI) at the receiver side is challenging, as an incorrect MI can lead to the wrong diagnosis. Hence, in this paper, we propose a MSB prediction error-based RDH scheme in an encrypted image with high embedding capacity, which recovers the original image with a peak signal-to-noise ratio (PSNR) of ∞ dB and structural similarity index (SSIM) value of 1. We scan the MI from the first pixel on the top left corner using the snake scan approach in dual modes: i) performing a rightward direction scan and ii) performing a downward direction scan to identify the best optimal embedding rate for an image. Banking upon the prediction error strategy, multiple MSBs are utilized for embedding the encrypted PHR data. The experimental studies on test images project a high embedding rate with more than 3 bpp for 16-bit high-quality DICOM images and more than 1 bpp for most natural images. The outcomes are much more promising compared to other similar state-of-the-art RDH methods.

Advances in Management of the Stroke Etiology One-Percenters.

PURPOSE OF REVIEW: Uncommon causes of stroke merit specific attention; when clinicians have less common etiologies of stoke in mind, the diagnosis may come more easily. This is key, as optimal management will in many cases differs significantly from "standard" care. RECENT FINDINGS: Randomized controlled trials (RCT) on the best medical therapy in the treatment of cervical artery dissection (CeAD) have demonstrated low rates of ischemia with both antiplatelet and vitamin K antagonism. RCT evidence supports the use of anticoagulation with vitamin K antagonism in "high-risk" patients with antiphospholipid antibody syndrome (APLAS), and there is new evidence supporting the utilization of direct oral anticoagulation in malignancy-associated thrombosis. Migraine with aura has been more conclusively linked not only with increased risk of ischemic and hemorrhagic stroke, but also with cardiovascular mortality. Recent literature has surprisingly not provided support the utilization of L-arginine in the treatment of patients with mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes (MELAS); however, there is evidence at this time that support use of enzyme replacement in patients with Fabry disease. Additional triggers for reversible cerebral vasoconstriction syndrome (RCVS) have been identified, such as capsaicin. Imaging of cerebral blood vessel walls utilizing contrast-enhanced MRA is an emerging modality that may ultimately prove to be very useful in the evaluation of patients with uncommon causes of stroke. A plethora of associations between cerebrovascular disease and COVID-19 have been described. Where pertinent, authors provide additional tips and guidance. Less commonly encountered conditions with updates in diagnosis, and management along with clinical tips are reviewed.

Mixed-methods Exploration of Telehealth-supported Long-acting Reversible Contraceptive Services in School-based Health Centers: How Much Added Value?

INTRODUCTION: This study explored adolescent and young adult preferences and experiences with telehealth-supported long-acting reversible contraceptive (LARC) services in New York City school-based health centers (SBHCs) during COVID-19. METHOD: Sequential mixed methods included post-LARC insertion surveys and in-depth interviews. RESULTS: Survey respondents (n = 45) were aged 14-21 years and predominantly Hispanic (53.3%). Only four respondents completed a postinsertion visit via telehealth. Most (82.2%) preferred in-person for future LARC visits; none preferred telehealth. Four themes emerged in interviews (n = 15): LARC self-efficacy and autonomy; SBHC convenience and accessibility; comfort with SBHC providers; and preference for in-person visits despite telehealth benefits. DISCUSSION: Although telehealth theoretically adds value to LARC service delivery, uptake and preference for telehealth in the SBHC context were low. Despite the perceived acceptability of telehealth, adolescents and young adults prefer in-person SBHC visits, suggesting SBHC access may eliminate barriers to care that telehealth seeks to overcome.

Reversible Intracranial Cytotoxic Edema Associated with COVID-19: A Case Report.

BACKGROUND: It is well-known that COVID-19 causes pneumonia and acute respiratory distress syndrome, as well as pathological neuroradiological imaging findings and various neurological symptoms associated with them. These include a range of neurological diseases, such as acute cerebrovascular diseases, encephalopathy, meningitis, encephalitis, epilepsy, cerebral vein thrombosis, and polyneuropathies. Herein, we report a case of reversible intracranial cytotoxic edema due to COVID-19, who fully recovered clinically and radiologically. CASE REPORT: A 24-year-old male patient presented with a speech disorder and numbness in his hands and tongue, which developed after flu-like symptoms. An appearance compatible with COVID-19 pneumonia was detected in thorax computed tomography. Delta variant (L452R) was positive in the COVID reverse-transcriptase polymerase chain reaction test (RT-PCR). Cranial radiological imaging revealed intracranial cytotoxic edema, which was thought to be related to COVID-19. Apparent diffusion coefficient (ADC) measurement values in the magnetic resonance imaging (MRI) taken on admission were 228 mm2/sec in the splenium and 151 mm2/sec in the genu. During the follow-up visits of the patient, epileptic seizures developed due to intracranial cytotoxic edema. ADC measurement values in the MRI taken on the 5th day of the patient's symptoms were 232 mm2/sec in the splenium and 153 mm2/sec in the genu. ADC measurement values in the MRI taken on the 15th day were 832 mm2/sec in the splenium and 887 mm2/sec in the genu. He was discharged from the hospital on the 15th day of his complaint with a clinical and radiological complete recovery. CONCLUSION: Abnormal neuroimaging findings caused by COVID-19 are quite common. Although not specific to COVID-19, cerebral cytotoxic edema is one of these neuroimaging findings. ADC measurement values are significant for planning follow-up and treatment options. Changes in ADC values in repeated measurements can guide clinicians about the development of suspected cytotoxic lesions. Therefore, clinicians should approach cases of COVID-19 with CNS involvement without extensive systemic involvement with caution.

Provision of Postpartum Contraception Before and After the Start of the COVID-19 Pandemic in Maine.

OBJECTIVE: Preliminary findings from selected health systems revealed interruptions in reproductive health care services due to the COVID-19 pandemic. We estimated changes in postpartum contraceptive provision associated with the start of the COVID-19 pandemic in Maine. METHODS: We used the Maine Health Data Organization's All Payer Claims Database for deliveries from October 2015 through March 2021 (n = 45 916). Using an interrupted time-series analysis design, we estimated changes in provision rates of long-acting reversible contraception (LARC), permanent contraception, and moderately effective contraception within 3 and 60 days of delivery after the start of the COVID-19 pandemic. We performed 6- and 12-month analyses (April 2020-September 2020, April 2020-March 2021) as compared with the reference period (October 2015-March 2020). We used Poisson regression models to calculate level-change rate ratios (RRs) and 95% CIs. RESULTS: The 6-month analysis found that provision of LARC (RR = 1.89; 95% CI, 1.76-2.02) and moderately effective contraception (RR = 1.51; 95% CI, 1.33-1.72) within 3 days of delivery increased at the start of the COVID-19 pandemic, while provision of LARC (RR = 0.95; 95% CI, 0.93-0.97) and moderately effective contraception (RR = 1.08; 95% CI, 1.05-1.11) within 60 days of delivery was stable. Rates of provision of permanent contraception within 3 days (RR = 0.70; 95% CI, 0.63-0.78) and 60 days (RR = 0.71; 95% CI, 0.63-0.80) decreased. RRs from the 12-month analysis were generally attenuated. CONCLUSION: Disruptions in postpartum provision of permanent contraception occurred at the beginning of the COVID-19 pandemic in Maine. Public health policies should include guidance for contraceptive provision during public health emergencies and consider designating permanent contraception as a nonelective procedure.

Implementing the individualized postpartum care with telemedicine during the COVID-19 pandemic at tertiary hospital in Thailand.

Objective: This study sought to identify the impact of implementing the new postpartum care (individualized rescheduling postpartum visit) with telemedicine on postpartum services during the COVID-19 pandemic. Study design: This is a retrospective cohort study conducted at Srinagarind Hospital, a tertiary hospital in northeast Thailand, to compare patient data before and after implementation. Delivery and postpartum data from May 2019 to December 2020 were retrieved from the hospital database. Intervention was implemented in March 2020. Data were analyzed to evaluate postpartum contact, contraceptive use, and breastfeeding using Wilcoxon rank sum and Chi-squared tests. Results: There was a significant increase in postpartum contact from 48.0% (95% CI. 45.8 to 50.3) before the implementation of telemedicine to 64.6% (95% CI. 61.9 25 to 67.2) after (adjusted OR 1.5, 95% CI. 1.2 to 1.8). In the post-intervention group, contraception use also increased significantly (84.7% vs 49.7%; p < 0.001), and a higher proportion of women relied on long-acting reversible contraception (16.6% vs 5.7%; p < 0.001). However, patients in the post-intervention group were less likely to practice exclusive breastfeeding (46.6% vs 75.1%; p < 0.001). Conclusion: Rescheduling the timing of a comprehensive visit accompanied by telemedicine support improved postpartum contact and contraceptive utilization, especially during the coronavirus pandemic. However, the observed decrease in exclusive breastfeeding highlights the need for better telehealth support.ImplicationOur findings support that individualized postpartum care with telemedicine is a feasible and useful approach to sustain services during a pandemic.

Reversible mixed cardiomyopathy in a patient recovered from severe COVID-19: a case report

We present reversible cardiomyopathy in a patient recovered from severe COVID-19. In addition to heart failure, the patient had thrombosis of abdominal aorta, lower extremity arteries and kidney infarction. At admission, the left ventricular ejection fraction (LVEF) was 18%. Primary diagnosis was SARSCoV2-induced myocarditis. However, cardiac MRI with delayed gadolinium enhancement revealed no fibrosis or active myocarditis. Troponin was normal. Atrial fibrillation persisted. Arrhythmia was first verified a week before COVID-19. Previously effective treatment failed to support adequate heart rate after COVID-19. Angiography revealed subtotal stenosis of the left anterior descending artery. After strict rate control and percutaneous coronary intervention, the patient was discharged on optimal medical therapy. Six months later, LVEF was 45%. Pulmonary vein isolation and cardioversion were performed. One week later, LVEF was 60%. In our opinion, this was a mixed cardiomyopathy with predominant role of AF and myocardial ischemia. Probably, COVID-19 modulated natural course of cardiovascular pathology. We also discuss potential contribution of COVID-19 to the course of cardiovascular pathology in long-term period of disease. © 2023, Media Sphera Publishing Group. All rights reserved.

Superior Cerebellar Artery Dissection in a Patient Diagnosed with Reversible Cerebral Vasoconstriction Syndrome: A Case Report

Arterial dissection is an uncommon complication of reversible cerebral vasocon-striction syndrome (RCVS). We describe the case of a 35-year-old woman with a migraine history who presented with recurrent thunderclap headache and focal neurological signs, including right hemiataxia. She had been diagnosed with COVID-19 disease two weeks earlier. Neuroimaging revealed multifocal stenosis of the posterior circulation arteries and dissection of the right superior cerebellar artery. She improved significantly throughout her one-week hospitalization and maintained only mild ataxia. The interplay between COVID-19 disease, RCVS, and arterial dissection requires further investigation.Copyright © Author(s) (or their employer(s)) and Sinapse 2022.

Male and female sterilisation

Male and female sterilisation are important forms of contraception worldwide despite declining popularity in developed countries and limited access during the Covid-19 global pandemic. Vasectomy is the only highly reliable form of male contraception. Appropriate counselling about permanent methods of contraception in both sexes is vital and should include information about irreversibility, failure rates and complications. The alternatives to sterilisation, particularly long-acting reversible contraception (LARC), should be discussed in detail as they are at least as effective and have the advantage of reversibility. Hysteroscopic techniques for female sterilisation are no longer available. In males the no-scalpel technique vasectomy requires minimal operating time and results in less post-operative discomfort than the incisional method. Regret after sterilisation and requests for reversal are more common in patients under 30 years and in men with no children.Copyright © 2023

Afebrile benign convulsions with or without a reversible splenial lesion in two pediatric patients with COVID-19.

BACKGROUND: Seizures in children with coronavirus disease 2019 (COVID-19) were markedly increased during the Omicron variant surge. Most seizures occurred with fever. New-onset afebrile seizures were rarely reported; therefore, their courses are not well-known. CASE PRESENTATION: Two patients (7 and 26 months of age, respectively) with COVID-19 showed recurrent afebrile seizures immediately after resolution of a fever lasting for 2-3 days. Bilateral convulsive seizures lasted for approximately 1 min/episode (6 of 7 total episodes) and occurred 3-4 times within 2-3 h. However, the patients were alert between seizures, which is in contrast to seizures occurring with encephalopathy or encephalitis. Only one episode required acute antiseizure medication. Brain magnetic resonance imaging showed a reversible splenial lesion in one patient. The serum uric acid level was slightly increased (7.8 mg/dL) in this patient. Electroencephalography findings were all normal. During the follow-up period, no seizures or developmental problems have been observed. CONCLUSIONS: COVID-19-associated, afebrile benign convulsions with or without a reversible splenial lesion are similar to 'benign convulsions with mild gastroenteritis'; therefore, continuation of antiseizure medication does not seem necessary.

Broad-spectrum coronavirus 3C-like protease peptidomimetic inhibitors effectively block SARS-CoV-2 replication in cells: Design, synthesis, biological evaluation, and X-ray structure determination.

Despite the approval of vaccines, monoclonal antibodies and restrictions during the pandemic, the demand for new efficacious and safe antivirals is compelling to boost the therapeutic arsenal against the COVID-19. The viral 3-chymotrypsin-like protease (3CLpro) is an essential enzyme for replication with high homology in the active site across CoVs and variants showing an almost unique specificity for Leu-Gln as P2-P1 residues, allowing the development of broad-spectrum inhibitors. The design, synthesis, biological activity, and cocrystal structural information of newly conceived peptidomimetic covalent reversible inhibitors are herein described. The inhibitors display an aldehyde warhead, a Gln mimetic at P1 and modified P2-P3 residues. Particularly, functionalized proline residues were inserted at P2 to stabilize the ß-turn like bioactive conformation, modulating the affinity. The most potent compounds displayed low/sub-nM potency against the 3CLpro of SARS-CoV-2 and MERS-CoV and inhibited viral replication of three human CoVs, i.e. SARS-CoV-2, MERS-CoV, and HCoV 229 in different cell lines. Particularly, derivative 12 exhibited nM-low µM antiviral activity depending on the virus, and the highest selectivity index. Some compounds were co-crystallized with SARS-CoV-2 3CLpro validating our design. Altogether, these results foster future work toward broad-spectrum 3CLpro inhibitors to challenge CoVs related pandemics.

Mild Encephalopathy With Partial Reversible Splenium Lesion Associated With SARS-CoV-2 Infection.

Viral-associated encephalitis/encephalopathy includes a wide spectrum of syndromes reported often in children. A rare form presents with mild encephalitis/encephalopathy and reversible splenial lesion(s). This report describes a case of this rare presentation associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in a 68-year-old woman. The patient presented to the hospital with altered mental status. Examination revealed mild encephalopathy with disorientation to date and time. Initial laboratory workup was significant for mild hypernatremia and acute kidney injury, and a polymerase chain reaction (PCR) test for SARS-CoV-2 was positive. MRI of the brain revealed an area of hyperintensity and water restriction in the corpus callosum. The patient was treated with tocilizumab, dexamethasone, and remdesivir. MRI of the brain five weeks later revealed partial resolution of the hyperintensity, and complete resolution of the restricted diffusion previously seen in the corpus callosum, which confirmed the diagnosis of mild encephalitis/encephalopathy with a reversible splenial lesion. We highlight the importance of recognizing this phenomenon in association with SARS-CoV-2 infection.

Telemedicine for Adolescent and Young Adult Long-acting Reversible Contraception Initial Follow-up Visit: Outcomes Over 1 Year

Background: Telemedicine for adolescent and young adult (AYA) long-acting reversible contraception (LARC) care is understudied, as telemedicine was quickly implemented in response to the COVID-19 pandemic. We compare outcomes of AYA LARC follow-up care via telemedicine vs. in-person visits over 1 year. Method(s): This cohort (IRBP00030775) includes patients who 1) had an intrauterine device (IUD) or implant inserted between 4/1/20-3/31/21 and 2) attended an initial LARC follow-up visit (defined as the first visit within 12 weeks of insertion) at 1 of 4 US Adolescent Medicine clinics. Eligible patients were 13-26 years old with a LARC method inserted without sedation and in situ for at least 12 weeks. We compared outcomes over 1 year between AYAs attending the initial follow-up visit via telemedicine (telemedicine attendees) to those who completed the visit in-person (in-person attendees). Outcomes included patient-reported symptoms, menstrual management, acne management, sexually transmitted infection (STI) testing and results, and LARC removal. Descriptive statistics described the sample and compared groups. Adjusted Poisson regression examined factors associated with number of visits and adjusted logistic regression models examined the association between initial visit modality and initiation of menstrual management. Result(s): Our study included 194 AYAs, ages 13.9-25.7 years, who attended an initial follow-up visit. Most AYAs (86.6%) attended only 1 visit in the first 12 weeks post-insertion. Telemedicine attendees comprised 40.2% of the sample. Telemedicine and in-person attendees were similar with regards to site, age, race/ethnicity, prior pregnancy, concurrent medical/mental health diagnoses, and reason for LARC (Table 1). In-person attendees were more likely to have the IUD than telemedicine attendees (Table 1). Patient-reported symptoms over 1 year were similar between groups (Table 2). Menstrual management (OR = 1.02, CI: 0.40-2.60), number of visits attended (RR = 1.08, CI: 0.99-1.19), acne management (p =.28), and LARC removal (p =.95) were similar between groups. In-person attendees were more likely to have STI testing than telemedicine attendees (p =.001). However, no positive STI tests were captured in either group. Conclusion(s): Approximately 40% of AYAs attended their LARC follow-up visit via telemedicine. LARC type may have influenced modality of visit. While in-person attendees were more likely to have STI testing, there were no positive STI tests detected in either group during the study period. More research is needed to determine if the decrease in STI testing is clinically significant. Other outcomes were similar between visit modalities, suggesting telemedicine may be useful for AYA LARC care. Supporting Figures or Tables: https://www.scorecard.com/uploads/Tasks/upload/19245/RGXGDRUQ-1370854-1-ANY.docx https://www.scorecard.com/uploads/Tasks/upload/19245/RGXGDRUQ-1370854-2-ANY.docxCopyright © 2023

Safety of oral Nirmatrelvir plus Ritonavir in Lung transplant recipients

Introduction: Lung transplant recipients (LTR) are at significant risk for severe covid-19 disease. The oral combination therapy Nirmatrelvir plus Ritonavir (Paxlovid) has been shown to reduce the risk for disease progression. Due to drug interactions with calcineurin inhibitors (CNI), significant concern exists in treating LTR with Paxlovid. We describe safety related outcomes of Paxlovid use among our LTR. Method(s): We retrospectively collected data of all LTR with a positive COVID-19 test since Paxlovid was available in Israel from January 2022 - May 2022. During this time, Paxlovid was the drug of choice, unless contraindicated. Data collection included: demographics, hospitalization for covid-19, death of any cause and drug related adverse events. Result(s): A total of 96 LTR tested positive for covid-19 during this period. View inline There was no evidence of posterior reversible encephalopathy (PRES), seizures, kidney failure or ED visits in any of the paxlovid treated patients. Conclusion(s): Despite significant drug related interactions between CNI and Paxlovid, the drug can be administrated safely in LTR. Given the high risk for severe covid-19 disease among LTR and the demonstrated safety of this study, use of paxlovid among this population should be considered.

The association between the COVID-19 pandemic and postpartum care provision.

BACKGROUND: The COVID-19 pandemic led to a rapid transformation in the healthcare system to mitigate viral exposure. In the perinatal context, one change included altering the prenatal visit cadence and increasing the utilization of telehealth methods. Whether this approach had inadvertent negative implications for postpartum care, including postpartum depression screening and contraceptive utilization, is unknown. OBJECTIVE: This study aimed to examine whether preventative health service utilization, including postpartum depression screening and contraceptive utilization, differed during the COVID-19 pandemic when compared with the prepandemic period. STUDY DESIGN: This retrospective cohort study included all pregnant patients who received prenatal care at 1 of 5 academic obstetrical practices and who delivered at Northwestern Memorial Hospital either before (delivery from September 1, 2018, to January 1, 2019) or during (delivery from February 1, 2020, to May 15, 2020) the COVID-19 pandemic. Completion of postpartum depression screening was assessed by reviewing standardized fields in the documentation associated with the screening in the electronic health record system. The method of contraception used was ascertained from the postpartum clinical documentation. Patients were classified as initiating long-acting reversible contraception use if they received NEXPLANON (etonogestrel implant) or an intrauterine device during the hospitalization for delivery or within 3 months following delivery. Bivariable and multivariable analyses were performed. RESULTS: Of the 2375 pregnant patients included in this study, 1120 (47%) delivered during the COVID-19 pandemic. Pregnant patients who delivered during the COVID-19 pandemic were significantly less likely to have undergone postpartum depression screening (45.5% vs 86.2%; P<.01); this association persisted after adjusting for potential confounders (adjusted odds ratio, 0.13; 95% confidence interval, 0.11-0.16). Pregnant patients who delivered during the COVID-19 pandemic also were significantly less likely to initiate long-acting reversible contraception use within 3 months of delivery (13.5% vs 19.6%; adjusted odds ratio, 0.67; 95% confidence interval, 0.53-0.84). CONCLUSION: The onset of the COVID-19 pandemic was associated with a decrease in the completion of postpartum depression screenings and fewer patients initiating long-acting reversible contraception use overall. These results can inform adaptations in healthcare delivery in the midst of the ongoing COVID-19 pandemic.