Author Interviews, Colon Cancer, Heart Disease, JAMA, Nutrition / 18.02.2021

MedicalResearch.com Interview with: Nathorn (Nui) Chaiyakunapruk PharmD, PhD Professor, Department of Pharmacotherapy University of Utah College of Pharmacy  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Colorectal cancer is one of the cancers for which we found that the risk can be significantly reduced by modifying diet. Individual components of your diet can contribute to an overall healthy diet pattern to lower the risk of colorectal cancer or increase it. Strong scientific evidence shows that limiting red meat and alcohol consumption, eating foods containing fiber and calcium, consumption of dairy products especially yogurt can help prevent colorectal cancer.  (more…)
Author Interviews, Heart Disease, JAMA, OBGYNE, Pediatrics / 18.02.2021

MedicalResearch.com Interview with: Amanda Marma Perak, MD, MS Assistant Professor of Pediatrics (Cardiology) and Preventive Medicine (Epidemiology) Ann & Robert H. Lurie Children's Hospital of Chicago Chicago Illinois 60611  MedicalResearch.com: What is the background for this study? What are the main findings? Response: The American Heart Association has formally defined cardiovascular health (CVH) based on the combination of 7 key health metrics: body mass index (weight versus height), blood pressure, cholesterol, glucose, diet, exercise, and smoking status. As we previously showed, the vast majority of pregnant women in the US have suboptimal CVH levels during pregnancy. We also showed that maternal CVH during pregnancy was associated with the risk for adverse newborn outcomes (such as high levels of body fat), but it was unknown what this might mean for longer-term offspring health. In the current study, the key finding was that mothers' CVH levels during pregnancy were associated with their offspring's CVH levels 10-14 years later, in early adolescence. For example, children born to mothers in the poorest category of CVH (representing 6% of mothers) had almost 8-times higher risk for the poorest CVH category in early adolescence, compared with children born to mothers who had ideal CVH in pregnancy. Even children born to mothers with any "intermediate" CVH metrics in pregnancy -- for example, being overweight but not obese -- had over 2-times higher risk for the poorest CVH category in early adolescence. (more…)
Author Interviews, Blood Pressure - Hypertension, COVID -19 Coronavirus / 17.02.2021

MedicalResearch.com Interview with: Pam R. Taub, MD, FACC, FASPC Director of  Step Family Foundation Cardiovascular Rehabilitation and Wellness Center Associate Professor of Medicine UC San Diego Health System Division of Cardiovascular Medicine MedicalResearch.com: What is the background for this study? Would you briefly explain what is meant by postural orthostatic tachycardia syndrome?  Is it more common in patients who have incompletely recovered from a COVID-19 infection?  Response: Postural Orthostatic Tachycardia Syndrome (POTS) is a, complex multisystem clinical syndrome Patients experience a wide spectrum of symptoms of varying severity, which are often debilitating.  Upon assuming an upright standing position from being supine, patients experience an increase in heart rate by 30 beats per minute (bpm) from supine position, This is often accompanied by lightheadedness, palpitations, dyspnea, mental clouding (“brain fog”), headaches. POTS can occur after infections as it thought to be triggered by the immune system .  The hypothesis is that when the body is fighting an infection some of the antibodies it produces can attack our regulatory systems that control heart rate and blood pressure. We are seeing an increase in POTS cases occurring after COVID-19 infection.  These patient are referred to as the “long haulers” These long haulers have elevated heart rate, fatigue, brain fog and shortness of breath with activity consistent with POTS. We are seeing that  COVID-19 is another infection that can lead to POTS. Some articles on this https://www.thedenverchannel.com/news/national/coronavirus/some-covid-19-survivors-being-diagnosed-with-syndrome-called-pots (more…)
Fertility, OBGYNE / 17.02.2021

Not being able to have biological children is a fear most people hope they never to have to face. fertility-pregnancy-IVFAlthough we might not all have grown up knowing for sure if children were in our future, or already have our baby names picked out - James if it’s a boy Violet if it’s a girl - having the decision whether or not to have children taken away from us, due to biological issues inside our bodies, can be devastating. When trying to have children, it can of course, become very frustrating when you aren’t getting pregnant. If you find this is the case, it is recommended that you go to the doctor after one year of failing to conceive. It’s always a good idea to get tested to really understand what is happening in your body. The main signs a woman may be infertile is if her menstrual cycles are too long (35 days or more) or are too short (21 days or less). When going for fertility tests, it is good to have an idea of what to expect. For women, samples of blood will most likely be tested to check for the presence of the hormone Progesterone. For men, a semen sample is obtained for analysis, checking its quality and quantity. Sitting in a waiting room waiting for the results of yet more testing takes its toll, and it’s easy to feel helpless as the image of the life you had planned drifts further out of reach. Luckily nowadays, these results don’t have to be so final as we finally have other options. (more…)
Author Interviews, COVID -19 Coronavirus / 16.02.2021

MedicalResearch.com Interview with: Rahul Subramanian PhD candidate Department of Ecology and Evolution Biological Sciences Division University of Chicago Chicago, IL 60637 MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Understanding the proportion of COVID-19 cases that become symptomatic, as well as the extent to which people without symptoms contribute to COVID-19 transmission, has important public health implications. However, changes in PCR testing capacity over time have made these quantities hard to estimate precisely. We used a model that incorporates daily changes in PCR testing capacity, cases, and serology to precisely estimate the proportion of cases that were symptomatic in New York City during the initial wave of the outbreak. Only 1 in 7 to 1 in 5 cases were symptomatic. Furthermore, non-symptomatic cases of the virus (this includes people who are either pre-symptomatic or asymptomatic) substantially contribute to community transmission, making up at least 50% of the driving force of SARS-CoV-2 infection.  (more…)
Author Interviews, Education, Nursing / 15.02.2021

nursing-education-dnpIf you’re currently working as a nurse, you are probably well aware of just how rewarding and fulfilling a job role it can be. You get to help patients from all walks of life every single day and make a real difference to not only people’s health but their lives more generally. It’s also a career in which there is a lot of scope for progression. There are so many different spheres within the field of nursing that you can choose to specialize in, whether it’s a particular age group (like pediatrics or gerontology) or a particular health condition (like oncology or emergency care). Some of these paths involve training on the job, whereas others require you to return to college to study and obtain a postgraduate qualification. Among these, one of the highest possible qualifications you can aim for is the DNP, or Doctor of Nursing Practice. DNP online programs and campus courses prepare you for a wide range of advanced nursing roles, including both direct patient care and indirect patient care positions. As such, they are a fantastic choice for nurses who want to reach the top levels in their field. This article will cover everything you need to know about the DNP qualification to help you decide whether it is a degree program that you would like to pursue. This includes more detail about the course itself, the advantages it can bring you, as well as information about eligibility and how to apply. MedicalResearch.com: What are DNP online programs? DNP stands for Doctor of Nursing Practice, and it is a doctoral-level qualification in the field of nursing. It’s also a terminal degree, meaning that it is the highest level certification you can achieve in clinical nursing education. The idea of the program is to prepare registered nurses (RNs) for top career positions in areas such as advanced practice nursing, nursing education, healthcare administration, and healthcare policy. DNP online programs and on-campus courses are becoming more popular, partly because the American Association of Colleges of Nursing has called for the qualification to become a requirement in order to work in advanced practice nursing. Although, in many cases, a Master’s qualification in nursing is sufficient, for those who wish to boost their clinical skills and knowledge to the highest level, a DNP is preferable. (more…)
Author Interviews, CDC, JAMA, Stroke, USPSTF / 11.02.2021

MedicalResearch.com Interview with: Aaron B. Caughey, M.D., M.P.P., M.P.H., Ph.D. Professor and Chair Department of Obstetrics and Gynecolog Associate dean for Women’s Health Research and Policy Oregon Health & Science University    Portland, OR. Founder and Chair Centers for Disease Control and Prevention–funded Oregon Perinatal Collaborative MedicalResearch.com: What is the background for this study? What are the main findings? Response: Stroke is a leading cause of death and disability in the United States and can be devastating to those affected. One of many risk factors for stroke is carotid artery stenosis (CAS), which is the narrowing of the arteries that run along the sides of the neck and supply blood to the brain. The Task Force wants to help prevent people from having a stroke, but evidence shows that screening for CAS in people without symptoms does not help prevent strokes and can actually lead to harmful events such as stroke, heart attack, or death. Since the harms of screening greatly outweigh the benefits, the Task Force continues to recommend against screening for CAS among adults who do not have any signs or symptoms of a blocked artery in the neck. (more…)
Author Interviews / 11.02.2021

MedicalResearch.com Interview with: Raymond L. Benza, MD, FACC, FAHA, FACP Primary Study Investigator and Professor of Medicine at The Ohio State University MedicalResearch.com: What is the background for this study? Would you briefly explain the significance of Pulmonary Arterial Hypertension? Response: Pulmonary arterial hypertension (PAH) is a silently progressive disease with no known cure and is often fatal. It’s a specific form of pulmonary hypertension (PH) that causes the walls of the pulmonary arteries to become thick and stiff, narrowing the space for blood to flow, and causing an increased blood pressure to develop within the lungs. PAH has a variety of etiologies and long-term impact on patients' functioning as well as their physical, psychological and social wellbeing. Assessing a patient's risk of 1-year mortality is a crucial component to the management and treatment of PAH, as the main treatment goal is for patients to achieve a low-risk status. Given the severity of the disease, physicians need to be able to risk stratify patients in order to characterize their disease better, know how to intelligently implement their medications, and when to refer them for lung transplantation. There are different approaches to assessing risk in PAH, including the use of variables, equations, and calculator tools; however, real-world evidence indicates risk assessment in the clinical setting is suboptimal. This is why we conducted an analysis to determine the validity of the Registry to Evaluate Early and Long-Term PAH Disease Management (REVEAL) Lite 2 risk calculator, an abridged version of the REVEAL 2.0 risk calculator, in patients with PAH.  (more…)
Author Interviews, Leukemia, Stem Cells, Technology / 11.02.2021

MedicalResearch.com Interview with: Eirini Papapetrou, MD, PhD Associate Professor Department of Oncological Sciences Icahn School of Medicine at Mount Sinai New York, NY 10029 MedicalResearch.com: What is the background for this study? Would you tell us a little about acute myeloid leukemia? Response: Acute myeloid leukemia is a form of cancer of the blood. It is typically very aggressive and lethal without treatment. The main treatment is high-dose chemotherapy and it has not changed very much in decades. Some more recent "targeted" therapies that are less toxic help somewhat but still do not result in cures. We believe a reason for this might be that both chemotherapy and newer "targeted" therapies target the cells at the later stages of the disease and spare the earlier ones, which can then give rise to disease resistance and relapse.  (more…)
Author Interviews, COVID -19 Coronavirus, Critical Care - Intensive Care - ICUs / 11.02.2021

MedicalResearch.com Interview with: Tejasvi Hora, PhD Candidate Department of Geography and Environmental Management, University of Waterloo Data Analyst, GEMINI, Unity Health Toronto MedicalResearch.com: What is the background for this study? Response: Death rates and resource use for COVID-19 hospitalization vary significantly worldwide, however, the characteristics and outcomes of COVID-19 hospitalizations in Canada have not been described in detail. Further, there is considerable uncertainty about how COVID-19 compares with influenza. In some circles, COVID-19 has been dismissed as being not more severe than “the flu”. ­We used data extracted from electronic health records of 7 hospitals in Ontario, Canada to describe characteristics and outcomes of hospitalization for COVID-19 and influenza.  (more…)
Author Interviews, Environmental Risks, NYU / 11.02.2021

MedicalResearch.com Interview with: Terry Gordon PhD Professor, Department of Environmental Medicine NYU Grossman School of Medicine NYU Langone Health  MedicalResearch.com: What is the background for this study? Response: We are air pollution researcher and interested in unique exposure scenarios.  Based on the work by Dr. Steve Chillrud, Columbia University, we did a study 5 years ago to assess air quality in over 30 subway stations in NYC.  We found poor air quality in all of the underground stations but the air quality was better in some locations.  So we wondered what would be air quality in different transit systems in NE United States.  David Luglio, pre-doctoral candidate, led a team of students to monitor particles in the air of subway stations in metropolitan NYC's MTA, LIRR, and PATH systems, Boston, Philadelphia, and Washington, DC.   (more…)
Allergies, Author Interviews, Immunotherapy / 11.02.2021

MedicalResearch.com Interview with: Dr. Cathy Leonard PhD Department of Infection and Immunity Luxembourg Institute of Health Luxembourg MedicalResearch.com: What is the background for this study? Response: Cat allergy is a rapidly increasing phenomenon characterized by hypersensitivity and an excessive immune response to certain allergens associated with cats, among which the major allergen Fel d 1, a protein typically found in their saliva, on their skin and fur. Cat allergy manifestations can range from mild forms like itchy nose or sneezing to the development of severe symptoms such as rhinitis and asthma, with potentially fatal outcomes. Only Allergen‐specific immunotherapy (AIT )can ensure an effective and longer lasting treatment in the more advanced cases. AIT typically consists in the subcutaneous injection of gradually increasing doses of the allergen of interest, until a critical quantity is reached that induces long-term immune tolerance. Nevertheless, there is still the need to improve cat AIT in terms of efficacy and safety. We hypothesized that immune tolerance to the allergen could be boosted by improving the adjuvanticity of AIT solutions, thereby optimizing the production of antibodies against Fel d 1, while minimizing inflammation.  (more…)
Author Interviews, Dermatology, Pediatrics / 11.02.2021

MedicalResearch.com Interview with: Jill Sommerville M.Sc Director of Medical at WaterWipes MedicalResearch.com: What is the background for this study? How prevalent is diaper dermatitis? Is it more severe in some babies? Response: The Utah study is an independent clinical study conducted by the University of Utah Hospital NICU, Salt Lake City and recently published in Advances in Neonatal Care journal. It was a year-long study conducted between January 2018 – March 2019. The NICU staff were interested in exploring a new Perineal Skin Care Guideline in their unit, encompassing use of WaterWipes, to decrease the incidence of diaper dermatitis. Their stated aim was to reduce diaper dermatitis by 20% within a 1-year period.  The study involved 1,070 premature babies, 11% of which were born at less than 30 weeks of gestational age. The inclusion criteria for the study were all babies who stayed for more than 1 day in the NICU. Diaper dermatitis is known to cause discomfort and emotional distress in all babies and can be a possible source of infection among NICU babies.  Diaper dermatitis remains prevalent, especially in preterm babies. The reported incidence varies from 21% to 25% among newborn intensive care babies. 1 Diaper dermatitis in pre term babies can be multifactorial especially as babies born early have a less well developed stratum corneum, the outer most layer of skin. NICU babies are often exposed to antibiotics and fortified milk to help them catch up growth. Other medical complications in addition can lead to altered gut flora and altered stool composition resulting in more frequency of stool. The presence of urine and frequent stools necessitates regular cleaning which can result in excessive rubbing of the skin or the use of wipes containing harsh ingredients that can damage the skin. (more…)
Author Interviews, Cancer Research, Dermatology, NEJM / 11.02.2021

MedicalResearch.com Interview with: Jane Fang, MD Clinical Athenex, Inc.  MedicalResearch.com: What is the background for this study? Would you briefly explain what is meant by actinic keratoses? How common are they and who is primarily affected? Response: Actinic keratosis is a very common precancerous skin condition that affects about 58 millions people in the US. Most commonly affected people are older (over 40 years old) men with fair skin type. Actinic keratosis lesions are red scaly bumps on sun-damaged skin mostly on the face, scalp, back of hands, forearms and legs. As there is a risk of 0.025-16% per year for each actinic keratosis to progress to skin cancer and it is not possible to predict which actinic keratosis will become cancerous, early treatment of actinic keratosis is generally recommended. Currently approved topical treatments require weeks or months of application and may lead to intolerable side effects that undermine compliance and reduce efficacy of treatment. Tirbanibulin ointment is a novel anti-proliferative agent that inhibits tubulin polymerization and disrupts Src kinase signaling, and has the potential to inhibit growth of abnormal skin cells in actinic keratosis. The current report described two Phase 3 randomized vehicle or placebo-controlled clinical studies that demonstrated that a 5-day course of tirbanibulin ointment applied once daily by patients was safe, well-tolerated, and effective in clearing actinic keratosis on the face or scalp compared to vehicle control. (more…)
Author Interviews, Blood Pressure - Hypertension, Cannabis / 10.02.2021

MedicalResearch.com Interview with: Ran Abuhasira MD, PhD student Cannabis Clinical Research Institute and Clinical Research Center Soroka University Medical Center, and Faculty of Health Sciences Ben-Gurion University of the Negev Beer Sheva, Israel MedicalResearch.com: What is the background for this study? What are the main findings? cannabis marijuana weed pot Response: The background for the study is the steady rise of cannabis use as a therapeutic in Israel and in many countries around the world. This largest increasing population of patients treated with medical cannabis is the older adults. However, very little data was published about cannabis treatment in older adults, and specifically about the cardiovascular and metabolic implications. T he main finding of the study is that cannabis treatment for 3 months was associated with a reduction in both systolic and diastolic blood pressure values, as measured by consequent 24-hours ABPM tests. In addition, no significant changes were found in blood lipids profile, hemoglobin A1C, fasting insulin, C-reactive protein, kidney function tests, electrolytes, anthropometric measurements, and ECG parameters. (more…)
Author Interviews, NIH, Pulmonary Disease / 09.02.2021

MedicalResearch.com Interview with: Stavros Garantziotis MD Division of Intramural Research National Institute of Environmental Health Sciences Research Triangle Park, NC MedicalResearch.com: What is the background for this study? How does hyaluronan differ from other medications for COPD? Is it used for other medical conditions? Response: Hyaluronan is a natural sugar found in the human body, including in the lung. We have found that when the lungs are exposed to pollution, this sugar breaks down, and the breakdown fragments cause inflammation in the lung. We also found that if we give back the natural form of hyaluronan, it protects the lung from inflammation. Patients suffering from COPD also have a lot of hyaluronan breakdown in their lungs. We therefore reasoned, that giving them back the natural form of hyaluronan, as an inhalation treatment, would help them reduce inflammation. We tested this, as a first step, in the treatment acute inflammation of the lungs in COPD patients who are suffering an exacerbation of their disease. Hyaluronan is different from existing medications in that it is a natural product of the body. It is used in Europe for conditions like cystic fibrosis, and after sinus surgery to humidify the airways. Because it is given by inhalation, it acts locally in the lungs.  (more…)
Author Interviews, Diabetes, JAMA, Johns Hopkins / 08.02.2021

MedicalResearch.com Interview with: Mary R. Rooney, PhD, MPH Postdoctoral research fellow Johns Hopkins Bloomberg School of Public Health MedicalResearch.com:  What is the background for this study? Response: Prediabetes is defined by elevated blood glucose levels below the threshold for diabetes diagnosis. Physicians screen for prediabetes to identify patients at high risk for diabetes. Prediabetes is common in middle-aged adults but has not been well-studied in older age. We undertook this study to examine the natural history of prediabetes in older adults. (more…)
Asthma, Author Interviews, JAMA, Karolinski Institute, Pediatrics / 08.02.2021

MedicalResearch.com Interview with: Yun-Han Wang MSc PhD student, Karolinska Institute MedicalResearch.com: What is the background for this study? Response: The use of proton pump inhibitors (PPIs) in children has increased substantially in recent years, concurrently with emerging concerns that these drugs may increase the risk of asthma. Whether PPI use in the broad pediatric population is associated with increased risk of asthma is not known.  (more…)
Addiction, Author Interviews, Columbia, JAMA / 05.02.2021

MedicalResearch.com Interview with: Elodie C. Warren, MPH Columbia University Mailman School of Public Health Graduate MedicalResearch.com: What is the background for this study? What are the main findings? Response: We know that the US has been experiencing an opioid crisis for the past two decades. And we know that among communities of color, rates of overdose deaths are continuing to increase, even though overall national rates decreased between 2017 and 2018. To better understand how the opioid crisis has differently affected racial/ethnic groups, we looked at how heroin treatment admissions changed over time by race/ethnicity, age, and sex. We found that there were stark differences when comparing non-Hispanic Black men and women to non-Hispanic White men and women. Importantly, our study suggests the existence of an aging cohort of Black men and women (likely including survivors of a heroin epidemic that hit urban areas more than 40 years ago) that continues to struggle with heroin addiction. This points to the need for targeted interventions in chronically underserved communities.  (more…)
Author Interviews, CMAJ, COVID -19 Coronavirus, Kidney Disease / 05.02.2021

MedicalResearch.com Interview with: Peter G. Blake MD, FRCPC, FRCPI,MSc MB Professor of Medicine in the Division of Nephrology Ontario Renal Network University of Western Ontario and London Health Sciences Centre London, Ontario  MedicalResearch.com: What is the background for this study? What are the main findings? Response: The Covid-19 pandemic has been very difficult for people on dialysis with reports of high infection rates and high mortality. We prospectively collected data on SARS-CoV-2 infection every week from all renal programs in the province of Ontario, Canada from the start of the pandemic. Between March and August 2020, 187 people on dialysis, equivalent to 1.5% of all those in the province, were infected with the SARS-CoV-2 virus. Over 60% were hospitalized, 20% required ICU and the mortality rate was very high at over 28%. Risk factors for infection included center hemodialysis versus home dialysis, residing in long term care, black, south Asian and other non-white ethnicity, and low neighbourhood income. (more…)
Author Interviews, Heart Disease, JACC / 05.02.2021

MedicalResearch.com Interview with: Paaladinesh Thavendiranathan MD, SM Ted Rogers Centre for Heart Research and the Division of Cardiology Peter Munk Cardiac Center, University Health Network, Joint Department of Medical Imaging, , University Health Networ Toronto, Ontario, Canada MedicalResearch.com: What is the background for this study? Response: Anthracyclines are a common class of chemotherapy drugs used to treat patients with blood, breast, and many other cancers. Patients receiving anthracycline based cancer therapy who are deemed to be high cardiovascular risk either based on their age or presence of cardiovascular risk factors are at risk of developing heart failure. In high risk patients this risk of heart failure could be between 5-10% over a 5 year period depending on the treatment regimens used. Therefore it is possible that the cancer patient of today can become a heart failure patient of tomorrow. These cancer treatments are however very effective against the cancer.  So it is important to find strategies to prevent the development of heart failure.  Usually oncologists and cardiologists work together to monitor patients during and after cancer therapy using surveillance strategies. One such strategy is to repeat heart ultrasounds to identify heart dysfunction early followed by initiation of cardioprotective therapy.  Traditional approaches measure left ventricular ejection (LVEF) as a metric of heart function.  However, we have learned that with this approach it may be too late when a change in LVEF is identified. Global longitudinal strain (GLS) is a newer echocardiography method that appears to identify heart dysfunction earlier before a major change in LVEF occurs. However, whether initiation of cardioprotective therapy when a change in GLS is identified can prevent a reduction in heart function and development of cardiotoxicity (significant change to heart function) is unknown. The SUCCOUR trial is an international, multicenter randomized controlled trial that compared using an LVEF based approach to surveillance (arm 1) versus the addition of GLS based surveillance (arm 2) in high risk patients receiving anthracycline based therapy. The study enrolled 153 patients in the LVEF arm and 154 patients in the GLS arm. Majority of the patients (~90%) had breast cancer.   (more…)
Author Interviews, Heart Disease / 05.02.2021

MedicalResearch.com Interview with: Sumeet S. Chugh MD Price Professor and Associate Director, Smidt Heart Institute Medical Director, Heart Rhythm Center Director, Center for Cardiac Arrest Prevention Director, Division of Artificial Intelligence in Medicine, Dept of Medicine Cedars-Sinai, Los Angeles MedicalResearch.com: What is the background for this study? Response: For a variety of reasons, sudden cardiac arrest during nighttime hours is the most perplexing and challenging form of this problem and needs to be investigated in detail. Patients are in a resting state, with decreased metabolism, heart rate, blood pressure, and in the absence of daytime triggers, presumably at the lowest likelihood of dying suddenly. The event can often go unrecognized, even by others sleeping in close proximity. Finally, survival from cardiac arrest at night is significantly lower compared to the daytime. There are no community-based studies out there. Small studies of rare heart disease conditions report that men are more likely to suffer this affliction but the reality is that there were not enough women in those studies to do justice to sex-specific analyses. (more…)
Author Interviews, COVID -19 Coronavirus, Education, Race/Ethnic Diversity, Social Issues / 04.02.2021

MedicalResearch.com Interview with: Ankur Dalsania Rutgers New Jersey Medical School (NJMS) M.D. Candidate 2021 MedicalResearch.com: What is the background for this study? Response: Similar to past pandemics, prior studies and news articles have highlighted the disproportionate impact of COVID-19 mortality in marginalized populations, especially Black Americans. Rather than biological differences, other factors like neighborhood conditions, educational attainment, economic stability, healthcare access, and social contexts have been hypothesized to influence the racial disparities. Using county-level data, we sought to quantitatively determine how these factors, collectively referred to as social determinants of health, impact COVID-19 mortality in Black Americans.  (more…)
Author Interviews, Dengue, PLoS, Zika / 04.02.2021

MedicalResearch.com Interview with: Gregor J. Devine, Ph.D Mosquito Control LaboratoryQIMR Berghofer Medical Research Institute Brisbane, Queensland, Australia MedicalResearch.com: What is the background for this study? Scale of the problem: Dengue, Zika and chikungunya are all transmitted by the same mosquito species.  That mosquito, Aedes aegypti, is superbly adapted to the human, urban environment – it lays its eggs and develops in the standing water that collects in the myriad containers associated with modern living (plastic bottles, food packaging, buckets, planters, crumpled tarpaulins etc.). Unusually they rely almost entirely on human blood for their nutritional requirements and they subsequently bite multiple times during each egg laying cycle. That reliance on human blood means that they are usually found resting indoors, a behaviour that also offers them some protection from weather extremes and predators. Once infected, and having incubated the virus until it is transmissible, a mosquito that survives for just a couple of weeks can infect many humans within the same and neighbouring households. In poorer tropical urban environments with dense human populations, unscreened houses, no air-conditioning, and innumerable rain-filled containers to develop in, Aedes aegypti proliferates and so do those diseases, causing ca 400M annual infections of dengue alone by some estimates. The economic impact of the dengue, which normally causes a high fever, muscle and joint pains and nausea, is pronounced; especially in poor households with few savings and no welfare system. Every year, about 500,000 of those dengue cases develop into severe dengue, or dengue haemorrhagic fever (typified by plasma leakage, severe bleeding and organ impairment). There are about 25,000 deaths annually. mosquito-Aedes aegypti-feeding-human.jpgThe Zika pandemic of 2015-2016 resulted in 1000s of babies born with microcephaly and damage to their brains and eyes. For 1000s of other children, the impacts of Zika on their cognitive development did not manifest in their first, formative years.  Chikungunya is endemic in Asia and Africa but between 2010 and 2014, outbreaks and epidemics spread across the Indian Ocean, the Caribbean, the Americas and the Pacific Islands. It causes severe, often debilitating joint pain in infected patients. Those affected also suffer from headaches, fever, severe muscle pain and conjunctivitis. Joint pain can persist in subacute or chronic form for several months or even years, particularly in older patients. The ubiquity of the mosquito Aedes aegypti across the tropics and sub tropics ensures that further epidemics of Zika and chikungunya will occur, outside their usual ranges. It’s simply impossible to predict when that will occur. (more…)