Housing and respiratory health: Exposures, health effects and interventions

Housing quality and affordability are well established as social determinants of health through direct and indirect mechanisms. Respiratory illnesses related to housing are nearly all the result of housing disrepair that allows intrusion into the home of environmental agents that are directly or indirectly associated with disease. Structural deficiencies such as leaks, cracks in the foundation or holes in the home's exterior can facilitate the presence of mould, which is causally linked to the development of asthma and is associated with exacerbation of asthma symptoms in children and adults. Indoor cleanliness can also contribute to the presence of mice and cockroaches. Proper ventilation can improve air quality, reducing exposure to PM, VOCs and infectious respiratory agents. Disparities in exposure to the housing conditions associated with respiratory disease are readily apparent across socioeconomic lines. Low-income families are less likely to be able to afford the costs of maintaining a home, which prevents them from making repairs that could improve respiratory health.Copyright © ERS 2023.

Acute hemorrhagic edema of infancy in a 6 week old

Objectives: Uncommon presentations of common diseases present a challenge in recognizing the correct diagnosis. Beside uncommon symptoms, uncommon age of onset challenges the pattern recognition abilities of clinicians. Method(s): Here we present a 6 week old boy with acute haemorrhagic edema of infancy in association with COVID-19. The otherwise healthy term born infant presented in our clinic with fever, mild respiratory symptoms and a rash. After establishing a sufficient saturation of oxygen, also during sleep, the infant was discharged. Result(s): Complete resolution of the rash was within days after. On admittance 60 mg prednisolone rectal was applied by the emergency night shift staff also to stabilize a slight wheeze due to COVID-19 but other than that no therapy was needed. Discussion(s): Reviewing the literature the benign nature of this leucocytoclastic vasculitis was commonly reported as well as the common onset during late infancy (about 8 to 23 months). Very few reports target the age group outside this age brackets. Nonetheless it is important to think outside the box when examining a patient in emergency paediatric derm.atology.

Association of Virus-Induced Wheezing With COVID-19

Background: Viral respiratory tract infections are the most common triggers of wheezing illnesses in children. Though rare, COVID-19 infection in children may trigger a viral-induced wheeze that requires distinguishing from other viral and asthma triggers. Objectives: The current study aimed to assess the role of COVID-19 in causation of viral induced wheeze in pediatrics age group in our locality. Methods: The study included 30 pediatrics cases = 2 months attending the Emergency Room and Department of Pediatrics, Faculty of Medicine, Zagazig University Hospital. According to the inclusion criteria for the study, patients were aged from 2 - 144 months with mean age (21.1±35.3 month). They were 13 females (43.3%) and 17 males (56.7%). Twelve patients had positive family history of asthma (40.0%). The standard technique for confirming COVID-19 is the real-time polymerase chain reaction (RT-PCR). Results: 30 children hospitalized with wheezing, 24 patients (80%) presented with difficult breathing, 18 patients (60%) were feverish, and 17 patients (56.7%) had cough. Running nose was noted in 9 patients (30%), grunting was observed in only one patient (3.3%). The mean O2 saturation of all patients was 91.8±2.6 and ranged from (92-95%). GIT manifestation was reported in 13.3%. The two confirmed cases has positive PCR test for Covid-19, a 7 year old male and a 5 year old female. Positive family history of COVID-19 was reported in both cases, neither of them has blood eosinophilia, they were on regular controller medication. Patients presented with wheeze, cough, difficult breathing, with no grunting or GIT manifestation. They were treated for 2 to 3 days by O2, inhaled B agonists plus short course of systemic steroids. Conclusion: Covid-19 is uncommon cause of viral induced wheeze among our patients. Only two cases of covid-19 related asthma exacerbation were reported in our study. [ FROM AUTHOR] Copyright of Zagazig University Medical Journal is the property of Association of Arab Universities and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full . (Copyright applies to all s.)

COVID-19 in Ultramarathon Runners: Findings of The Ultrarunner Longitudinal TRAcking Study

Purpose: Ultramarathon runners are a unique patient population who have been shown to be free of nearly all severe chronic medical conditions. The effect that COVID-19 infection has on this population and their running behavior is unknown. Method(s): The Ultrarunner Longitudinal TRACking Study (ULTRA Study) is the largest known longitudinal study of ultramarathon runners. Questions on general health status, running behavior, performance, and COVID-19 infection were included. Result(s): Six hundred sixty-two ultramarathon runners participated in the study. This group exercised an average of 10.0 hours per week, including running an average of 26.8 miles per week;52.1% of ultramarathon runners reported ever being symptomatic from a COVID-19 infection with 6.3% testing positive multiple times. Severe infection occurred in 0.3% (2 patients) requiring a total of 3 days of hospitalization. Of those who were infected, 84% were fully vaccinated at the time of their infection;67% of infections effected running for a mean of 33.1 days. The most common other symptoms included fever (73.3%), fatigue (68.7%), sore throat (67.5%), runny nose (67.0%), and cough (66.7%). Cardiovascular symptoms, which are of particular interest in the running population, included shortness of breath (46.4%), increased heart rate (45.2%), chest pain (34.2%), and wheezing (32.5%). Of 662, 48 (7.3%) of ultrarunners reported Long COVID (symptoms lasting more than 12 weeks). Conclusion(s): Severe COVID-19 infection is rare in ultramarathon runners, although symptomatic infection that affects running is common. These rates, along with Long COVID, are lower than is reported in the literature for the population on average. Significance: Ultrarunners are at very low risk of COVID- 19 symptoms requiring hospital care but significant risk of infection that effects running. Cardiovascular symptoms are common, and the long-term significance of these symptoms in runners is unknown.

Cool Your Jets Bro

History: Twenty-two year old male basic trainee was brought to the ED after collapsing during a routine ruck march. At mile 8/12, soldier was noted to develop an unsteady gate and had witnessed loss of consciousness. A rectal core temperature was obtained and noted to be >107degreeF. Cooling initiated with ice sheets and EMS was activated. On arrival to the ED, patient demonstrated confusion and persistently elevated core temperatures despite ice sheeting, chilled saline and cold water bladder lavage. Cooling measures were discontinued after patient achieved euthermia in the ED;however, his temperatures subsequently spiked>103degreeF. Given rebound hyperthermia, an endovascular cooling (EVC) device was placed in the right femoral vein and patient was transferred to the ICU. Multiple attempts to place EVC device on standby were unsuccessful with subsequent rebound hyperthermia. Prolonged cooling was required. Physical Exam: VS: HR 121, BP 85/68, RR 22 SpO2 100% RA, Temp 102.4degreeF Gen: young adult male, NAD, shivering, A&Ox2 (person and place only) HEENT: Scleral anicteric, conjunctiva non-injected, moist mucus membranes Neck: Supple, no LAD Chest: CTAB, no wheezes/rales/rhonchi CV: tachycardia, regular rhythm, normal S1, S2 without murmurs, rubs, gallops ABD: NABS, soft/non-distended, no guarding or rebound EXT: No LE edema, tenderness SKIN: blisters with broad erythematous bases on bilateral heels Neuro: CN II-XII grossly intact, 5/5 strength in all extremities. Differential Diagnosis: 216. Septic Shock 217. Hypothalamic Stroke 218. Exertional Heat Stroke (EHS) 219. Neuroleptic Malignant Syndrome 220. Thyroid Storm Test Results: CBC: 18.2>14.5/40.6<167 CMP: 128/3.5 88/1831/2.7<104, AST 264, ALT 80, Ca 8.8 Lactate: 7.1 CK: 11 460 Myoglobin: 18 017 TSH: 3.16 CXR: No acute cardiopulmonary process Blood Cx: negative x2 CSF Cx: Negative COVID/Influenza/EBV: Negative Brain MRI: wnl. Final Diagnosis: Exertional Heat Stroke. Discussion(s): No EVC protocols exist for the management of EHS or rebound/refractory hyperthermia. As a result, the protocol used for this patient was adapted from post-cardiac arrest cooling protocols. It is unclear if this adapted protocol contributed to his delayed cooling and rebound hyperthermia as it was not intended for this patient demographic/ pathophysiology. Furthermore, despite initiating empiric antibiotics upon admission, delayed recognition and tailored therapy for his bilateral ankle cellulitis may have contributed to the difficulty in achieving euthermia. In summary, more research needs to be done to evaluate and develop an EVC protocol for EHS. Outcome(s): Euthermia was achieved and maintained after 36 hours of continuous EVC, at which point it was discontinued. His CK, AST/ALT, creatinine and sodium down-trended after discontinuation of EVC. Patient's antibiotics were transitioned to an oral formulation for treatment of ankle cellulitis and he was prepared for discharge. He was discharged with regular follow-up with the Fort Benning Heat Clinic. Follow-Up: After discharge, patient had regularly scheduled visits with the Fort Benning Heat Clinic. His typical lab markers for exertional heat stroke were regularly monitored. He had continued resolution of his Rhabdomyolysis, acute kidney injury and hyponatremia with typical treatment. Soldier returned to duty after 10 weeks of close monitoring and rehabilitation.

Severe bronchiolitis profiling as the first step towards prevention of asthma.

Bronchiolitis is the most common respiratory infection leading to hospitalization and constitutes a significant healthcare burden. The two main viral agents causing bronchiolitis, respiratory syncytial virus (RSV) and rhinovirus (RV), have distinct cytopathic, immune response, and clinical characteristics. Different approaches have been suggested for subtyping bronchiolitis based on viral etiology, atopic status, transcriptome profiles in blood, airway metabolome, lipidomic data, and airway microbiota. The highest risk of asthma at school age has been in a subgroup of bronchiolitis characterized by older age, high prevalence of RV infection, previous breathing problems, and/or eczema. Regarding solely viral etiology, RV-bronchiolitis in infancy has been linked to a nearly three times higher risk of developing asthma than RSV-bronchiolitis. Although treatment with betamimetics and systemic corticosteroids has been found ineffective in bronchiolitis overall, it can be beneficial for infants with severe RV bronchiolitis. Thus, there is a need to develop a more individualized therapeutic approach for bronchiolitis and follow-up strategies for infants at higher risk of asthma in the future perspective.

Real Time Implementation of Robust Sound based Respiratory Disease Classification using Spectrogram and Deep Convolutional Neural Networks

Respiratory diseases become burden to affect health of the people and five lung related diseases namely COPD, Asthma, Tuberculosis, Lower respiratory tract infection and Lung cancer are leading causes of death worldwide. X-ray or CT scan images of lungs of patients are analysed for prediction of any lung related respiratory diseases clinically. Respiratory sounds also can be analysed to diagnose the respiratory illness prevailing among humans. Sound based respiratory disease classification against healthy subjects is done by extracting spectrogram from the respiratory sound signal and Convolutional neural network (CNN) templates are created by applying the extracted features on the layered CNN architecture. Test sound is classified to be associated with respiratory disease or healthy subjects by applying the testing procedure on the test feature frames of spectrogram. Evaluation of the respiratory disease binary classification is performed by considering 80% and 20% of the extracted spectrogram features for training and testing. An automated system is developed to classify the respiratory diseases namely upper respiratory tract infection (URTI), pneumonia, bronchitis, bronchiectasis, and coronary obstructive pulmonary disease (COPD) against healthy subjects from breathing & wheezing sounds. Decision level fusion of spectrogram, Melspectrogram and Gammatone gram features with CNN for modelling & classification is done and the system has deliberated the accuracy of 98%. Combination of Gammatone gram and CNN has provided very good results for binary classification of pulmonary diseases against healthy subjects. This system is realized in real time by using Raspberry Pi hardware and this system provides the validation error of 14%. This automated system would be useful for COVID testing using breathing sounds if respiratory sound database with breathing sound recordings from COVID patients would be available.Copyright © 2023 North Atlantic University Union NAUN. All rights reserved.

Respiratory Syncytial Virus (RSV) infections in children: recent concepts in immunopathogenesis and diagnostic dilemma

Respiratory viral infections are important cause of morbidity and mortality in early life. The relative influence of host and viral factors possibly contribute to the disease pathogenesis. Predisposing conditions like prematurity, Low birth weight and congenital heart diseases etc. have been incriminated in the disease progression. The development of cough, wheezing, and tachypnea, usually peaking on days 4 to 5, go parallel with host cytokine responses and viral load. Various host cytokines, chemokines and molecules involved in the immune response against RSV infection might be responsible for the outcome of the disease process. Nasopharyngeal aspirates (NPAs) from children (n = 349) between 2013-2017 were subjected for IL-17A, IFN-gamma, TNF-alpha, IL-10, IL-6 levels by CBA and MMP-9 and TIMP-1 levels by ELISA. The viral load in RSV positive samples and cytokine levels were correlated with the WHO criteria for acute lower respiratory tract illness (ALRTI). RSV viral load, Pro-inflammatory cytokine (TNF-alpha) levels in severe ALRTI patients were significantly higher than the ALRTI patients [p<0.001]. Whereas Th17 cytokine (IL-17) was found to be significantly higher (p<0.05) in ALRTI patients than severe patients. MMP-9 is secreted in higher levels in severe ALRTI patients (n = 77) in comparison to Acute LRTI patients (n = 35) with an increase of thirty seven fold (p<0.001). Thus, the study highlights the role of TNF -alpha, IL-17 and Th2 cytokine biasness in the pathogenesis of RSV disease with the possible contribution of higher MMP-9/TIMP-1 ratio as a bad prognostic marker towards disease severity. To study the gene expression of autophagy and mTOR signalling pathways in RSV infected children with ALRTI. Nasopharyngeal aspirate (NPA) samples (n = 145) from children suffering from ALRTI were subjected for detection of RSV (Oct 2019 to March 2020). Semi-quantitative gene expression analysis for 5 representative genes each of mTOR signalling and autophagy pathway were performed in respiratory tract epithelial cells using 25 RSV positive cases and 10 healthy controls subjects. Autophagy gene expression analysis revealed significant upregulation in NPC1 and ATG3 autophagy genes. mTOR, AKT1 and TSC1 genes of mTOR pathway were significantly down-regulated in RSV positive patients except RICTOR gene which was significantly upregulated. Thus, survival of RSV within autophagosome might have been facilitated by upregulation of autophagy and downregulation of mTOR signalling genes. To assess the impact of SARS-CoV2 pandemic on RSV, samples were collected from children with ALRTIs admitted to emergency, PICU and indoor admissions during pre-pandemic period (October 2019 to February 2020;n = 166) and during COVID-19 Pandemic (July 2021 to July 2022;n = 189, SARS-CoV2 negative). These NP swabs were analyzed for pdm InfA H1N1, InfA H3N2, Inf B, RSV, hMPV, hBoV, hRV, PIV-2 and PIV-3 by PCR. Higher proportion of children with ALRTIs have had virus/es isolated during pre-pandemic period than during pandemic period (p<0.001). During pre-pandemic period, significantly higher proportion of children had RSV positivity (p<0.001);and significantly lower positivity for hRV (p<0.05), hMPV (p<0.05), and hBoV (p <= 0.005). The occurrence of COVID-19 pandemic has significantly impacted the frequency and pattern of detection of RSV among hospitalized children with LRTIs. RSV Fusion protein plays a critical role in the entry of the virus into the host cell by initiating the fusion of host and viral membranes. It happens to be a target of neutralizing antibodies paving the way as a vaccine candidate. Hence effort was made to introduce point mutation in hRSV fusion protein which can confer stability in its prefusion form. In-silico a stable structure of RSV fusion protein was generated making it a potential vaccine candidate. The timely diagnosis of RSV infection in this population is important for initiating therapy and instituting appropriate infection prevention measures. Serological testing is not widely used for the diagnosis of RSV. C ll Cultures including shell vial culture were used for RSV diagnosis. However, culture approaches lack sensitivity, often quite significantly, compared to nucleic acid amplification assays for the diagnosis of RSV infections. Molecular multiplex assays now offer increased sensitivity for a more accurate diagnosis. However issues with the use of these types of commercial panel assays include the requirement for substantial training, quality systems, and infrastructure to maintain and run these assays and many a times identification of viruses where the true pathogenic potential of those multiple viruses are debatable. Studies are available with laboratory- developed nucleic acid amplification test systems for the detection of RSVA and RSVB in clinical specimens either by PCRbased technologies or RT-LAMP. Gene targets of laboratory-developed molecular assays point towards M gene and the N gene in RSVA and -B with the benefits of flexibility to modify assays when targets are under evolutionary pressure to change, as well as a perceived initial low cost to carry out testing.

Pulmonary sarcoidosis

The lung is the most common organ affected by sarcoidosis. Multiple tools are available to assist clinicians in assessing lung disease activity and in excluding alternative causes of respiratory symptoms. Improving outcomes in pulmonary sarcoidosis should focus on preventing disease progression and disability, and preserving quality of life, in addition to timely identification and management of complications like fibrotic pulmonary sarcoidosis. While steroids continue to be first-line therapy, other therapies with fewer long-term side-effects are available and should be considered in certain circumstances. Knowledge of common clinical features of pulmonary sarcoidosis and specific pulmonary sarcoidosis phenotypes is important for identifying patients who are more likely to benefit from treatment.Copyright © ERS 2022.

A retrospective review of the functional status of patients post-severe COVID-19 disease

Introduction: The purpose of this study was to evaluate the functional status and ongoing respiratory symptoms of patients who have been discharged home, who were admitted to the intensive care unit (ICU) with severe COVID-19 disease. Long term complications post critical illness, such as post intensive care syndrome (PICS), are well-recognised [1], however, little data exists specific to COVID-19 ICU survivors. Method(s): Local ethics committee approval was secured. Participants were recruited using the electronic intensive care chart database. All patients, from March 2020 to November 2021, who survived Covid-19 were included. Researchers conducted phone interviews with participants and completed three questionnaires;Katz Index of Independent Living Questionnaire, Karnofsky Performance Status Scale and the American Thoracic Society (ATS) Respiratory Disease Questionnaire. Data was input and analysed using excel and stored on a password encrypted computer. Result(s): Database search revealed 61 patients available, 33 of 61 patients were included. 20 (61%) were male, 13 (39%) were female. Mean age was 58, with a range of 25-81. Mean length of ICU stay was 15 days, with a range of 1-74 days. 15 (45%) patients were intubated. Most common Katz score (range 1-6) was the highest score of 6 in 23 (70%) patients. Most common Karnofsky score (range 10-100) was 60 in 11 (33%) patients, with 31 (94%) scoring < 100. The most frequent ATS shortness of breath (SOB) grade (range 0-4) was 3 in 10 (9%) patients, with 23 (70%) patients scoring > 0. 14 (42%) patients had an ongoing cough, 11 (33%) patients had a wheeze and 0 (0%) patients were on home oxygen therapy. Conclusion(s): This study highlights in the majority of patients who survived severe Covid-19 disease to discharge home, there were serious ongoing limitations to their functional status and exercise tolerance, however, they remained independent of basic activities of daily living.

The hidden dangers of SARS-CoV-2 testing

A foreign body can be intentionally or accidentally ingested. Timing of endoscopy relies on foreign body shape and size, location in gastrointestinal tract, patient's clinical conditions, occurrence of symptoms or onset of complications. In this short case, we present a middle age woman, who accidentally swallowed a portion of a nasopharyngeal swab half-broken during a diagnostic test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Upper gastrointestinal endoscopy was promptly performed to prevent the swab from crossing the pylorus leading to serious complications and, therefore, risk of surgical intervention. The broken nasopharyngeal swab was detected in the gastric body, and immediately removed with a foreign body forceps. Our hospital performs many nasopharyngeal swabs and to our knowledge, this is only the second reported swab ingestion during SARS-CoV-2 test.Copyright © 2021 The Gastroenterological Society of Taiwan, The Digestive Endoscopy Society of Taiwan and Taiwan Association for the Study of the Liver.

A nontraumatic, right-sided diaphragmatic hernia in an adult diagnosed during an asthma attack

Case report We present a rare case of a right-sided diaphragmatic herniation of the ascending colon, in a 76-year-old asthmatic patient with a non-congenital diaphragmatic hernia, no history of trauma, surgery, or radiation. The patient presented at the emergency room with dyspnea, non-productive cough, wheezing, tachypnea, tight chest, respiratory failure. This patient has a 40-year history of severe persistent extrinsic asthma, treated with high doses of inhaled corticosteroids and LABA. Before the pandemic, this patient was hospitalized 3-4 times a year for her asthma attacks, but in the last 2 years, due to Covid-19, the patient was not hospitalized, resulting in uncontrolled asthma with daily symptoms. During the hospitalization, chest radiography was performed where the hernia was suspected and confirmed by a CT Scan. Despite the diagnosis of diaphragmatic herniation, she was clinically better with the proper asthma treatment and after consulting with her family she refused the intervention to correct the hernia. She has had two vaginal deliveries, no malignancies, no trauma, no intervention in her life. In this case, the only possible cause for the herniation of the colon is persistent cough combined with advanced age, chronic steroid use, and obstructive lung disease. Non-traumatic, right-sided diaphragmatic hernia of the colon in adults is very rare. Persistent cough with other predisposing conditions of this patient is the cause of this herniation. The chest X-ray and CT were essential for making the diagnosis. Rare hernias like this should be kept in mind when coming to a diagnosis.

Household secondhand smoking and asthma exacerbation during the covid-19 pandemic in Japanese junior high school students

Background: There is evidence that secondhand smoke exposure, particularly indoor smoking exposure, increases the risk of asthma exacerbations. This relationship might be modified in the era of a pandemic of covid-19 when the overall spread of viral infection may decrease due to precaution. Method(s): In this public school-based longitudinal paper questionnaire study in 2019 and 2021, the students and parents of junior high schools were asked whether the student had ever been diagnosed as wheezy bronchitis or asthma by a doctor and whether they had wheezing or whistling in the chest in the last 12 months. The presence of smokers in the household and their location of smoking (outside only or indoor) were also asked. Student sex, parental age, household income, and the region of the school were employed as covariates. Result(s): Of 1926 students who registered in 2019, 1482 (76.9%) responded in 2021. A total of 351 (23.4%) ever had a doctor diagnosis of asthma. The rate of students who reported asthma symptoms decreased from 27.4% in 2019 to 8.6% in 2021. The rate of asthma symptoms significantly increased depending on the presence of smokers in the household and the location of smoking in 2019;22.1% (44/199) in the students with no smokers in the household, 29.2% (19/65) smokers with smokers who smoke only outside the home, and 39.1% (34/87) with indoor smokers. This association remained significant in 2021, although there were some improvements in the overall smoking status in the household;5.5% (12/217), 12.3% (7/50), and 14.3% (11/77), respectively. The adjusted odds ratio of asthma symptoms in the students with indoor smokers, as compared with no smokers in the household, was 1.92 (95% confidential intervals (CI), 1.06-3.48) in 2019 and 2.92 (95% CI, 1.03-8.21) in 2021. Conclusion(s): These results suggest that household indoor smoking exposure may have an adverse effect on asthma symptoms even in the era of the covid-19 pandemic.

Cerebellar syndrome as a complication of COVID-19 disease

COVID-19 disease is caused by the new coronavirus SARS-CoV-2. The disease first appeared in China in 2019 and quickly spread throughout the world. It primarily affects the respiratory tract, manifested by fever, cough and the devel-opment of dyspnoea, but the symptoms and complications can affect any organ system. Neurological symptoms include headaches, muscle and joint pain, taste and smell disorders. Complications include inflammatory diseases of the central nervous system, ataxia, peripheral nerve and muscle diseases, worsening of extra-pyramidal diseases, and neuropsychiatric disorders. This paper presents a case report of a 62-year-old man with cere bellar syndrome, ataxia, intentional tremor and hypermetria when dealing with COVID-19 disease.Copyright © 2021 Neuroendocrinology Letters.

CASE REPORT: Immigrants and evolving food allergies

Case report Background: We present a case of coconut allergy as a rare evolving food allergy among immigrants. Case presentation: A 3-year-old girl, on treatment for asthma, was referred to the allergy clinic due to possible reactions to salmon and coconut. Due to COVID restrictions, the initial consultation was conducted by telephone. Reportedly, she developed hives and wheeze after eating salmon and coconut products. During the face-to-face review, it was noted that the child's paternal side of the family was of ethnic minorities. The patient had cradle cap as a baby, and coconut oil was applied for treatment as advised by family back home. During a hospital-based coconut challenge, she developed puffy eyes, and on subsequent consumption of coconut macaroon, she developed hives. The child was diagnosed with coconut allergy. Face-to-face assessment and food cultural awareness are essential for clinical diagnosis. Discussion(s): Allergy is a multifactorial illness affected by epigenetic, environmental factors, eczema during infancy and food culture. Studies suggest that the risk of allergy can be highest in immigrants to culturally stable food, particularly with delayed early taste during weaning. The dual allergen hypothesis proposes that early cutaneous exposure to food protein through damaged skin barrier can lead to sensitisation and allergy and that early oral exposure to food induces tolerance. Conclusion(s): Further research on understanding the interaction between epigenetics of the allergic disease and the environment is needed as is an understanding of how the movement of populations and different culture habits can affect the incidence of food allergy. In the meantime, is promoting healthy skin barrier and early food introduction enough to prevent food allergies.

Pediatric Asthma: Where Has Montelukast Gone?

At its introduction in the management of pediatric asthma, montelukast was regarded as a potentially revolutionary drug due to its mechanism of action and easy clinical applicability. Nevertheless, its use in daily practice and evidence from clinical trials have shown that, rather than a radical change in the approach to asthmatic children, montelukast more likely represents a second-line medication that is useful when inhaled steroids alone fail in providing adequate symptom control. Furthermore, increasingly reported side effects have raised concerns regarding its safety. In the last decade, several studies have tried to better define the strengths and drawbacks of montelukast both in preschool wheezing and school-age asthma. The present review summarizes the literature published on this topic since 2010, highlighting the often-controversial results and the unanswered questions regarding the role of montelukast in pediatric asthma. Moreover, advances in the understanding of the mechanisms of action of montelukast are reported. The main finding emerging from the present analysis is that montelukast application is likely to be useful in a subset of asthmatic children rather than in large groups of patients. Future studies should focus on the identification of biomarkers able to predict which patients will benefit from montelukast to achieve a more tailored prescription.

Clinical and quality of life assessment in patients with latex allergy during COVID-19 pandemic: Possible protective role of continuous latex immunotherapy

Background: During Covid-19 pandemic, the massive use of Personal Protective Equipment could provoke severe adverse reactions in latex allergy patients and could negatively affect their quality of life. Method(s): The observational single-centre present study was carried out on 67 adult subjects with a latex allergy diagnosis followed by Allergy Unit of Fondazione Policlinico Universitario A. Gemelli IRCCS of Rome. All data were collected from January 2020 to December 2020. All patients underwent to a survey focused on their clinical and psychological conditions during Covid-19 pandemic. For the evaluation of the degree of well-being, we used SF-36 questionnaire (Short-Form 36-Item Health Survey). The aim of our study is: (a) to evaluate the incidence of allergic reactions in patients with latex allergy during the SARS-CoV- 2 pandemic;(b) to evaluate the protective role of continuous latex ITS during this period;(c) to evaluate quality of life of natural rubber latex allergy (NRLA) patients during the pandemic. Result(s): 67 patients (9 males and 58 females, mean age of 45.9 +/- 11.4 years) suffered from latex allergy were included in the present study. We recorded among our patients 13 cases (34.2%) of urticarial/ angioedema (U/A), 9 cases (23.6%) of respiratory symptoms (RS;dyspnoea, shortness of breath, wheezing) and 7 cases (18.4%) of anaphylaxis. In patients undergone continuous ITS, we observed less cases of U/A (p < 0.001), RS (p < 0.001), anaphylaxis (p = 0.003), hospitalizations (p = 0.014) and a lower therapy administration. We compared the results of SF-36 questionnaire in patients undergone continuous and not continuous latex ITS with a significance differences score between these two groups. Conclusion(s): The pandemic challenged the capacity of healthcare systems to provide adequate management of NRLA patients and in this context, we performed a survey to monitor their health status. During the pandemic, the risk of latex exposure was significant increased considering the possibility of direct skin contact, airborne exposure, contamination of food and medical evaluations. Our study is the first that investigated the clinical and quality of life effects of Covid-19 pandemia in NRLA patients demonstrating the importance of SLIT adherence also in this complex period. (Table Presented).

Clinical case of gastroesophageal reflux disease exacerbation in a middle-aged patient with covid-19.

Objective. To describe COVID-19 influence on gastroesophageal reflux disease (GERD) exacerbation using clinical case. Main points. COVID-19 infection remains an urgent problem for modern medicine due to its high contagiousness and rapid dis-tribution among the working population. We presented a clinical case of a 49-year-old female patient with respiratory complaints and extraesophageal manifestations of GERD. Conclusion. This clinical case showed that clinicians should consider various mechanisms of respiratory symptoms, which becomes exceptionally relevant during the COVID-19 pandemic. The development of atypical symptoms in a patient of working age without concomitant pathology causes difficulties in early diagnosis and timely treatment, in contrast to comorbid elderly and senile patients. Several mechanisms led to an exacerbation of GERD with the development of wheezing. Therefore, a clinician should meticulously take a medical history, form a trusting relationship with a patient, detect and correct early signs of anxiety and depression with a multidisciplinary team.Copyright © 2021, Media Sphera Publishing Group. All rights reserved.

Anaphylaxis to trometamol excipient in Moderna COVID-19 vaccine: A case report

Case report The first approved COVID-19 vaccines include BNT162B2 Pfizer-BioNTech and mRNA-1273 Moderna mRNA vaccines. Some severe allergic reactions to these vaccines have been report, and even though there is a lack of robust evidence, IgE-mediated hypersensitivity to excipients may be the cause of several. The excipient polyethylene glycol (PEG) is present in both, whilst Moderna further contains trometamol (or tromethamine), a buffer additive present in drug formulations and contrast media. We report the case of a 40 year-old woman, with controlled allergic rhinitis and asthma, who was referred to our Immunoallergology Department due to an anaphylactic reaction to Moderna COVID-19 vaccine. She described an episode of cervical and facial pruritus 5 minutes after receiving the first dose of vaccine, which rapidly evolved to generalized urticaria. She was promptly given intravenous (IV) clemastine with improvement of symptoms. However, 1h later she developed respiratory symptoms (dry cough, shortness of breath and wheezing). IV hydrocortisone was also given, and the patient was kept under medical supervision for 6h, after which she was discharged home. The following day, she had urticaria that resolved with oral deflazacort (60 mg). She denies exercise practice, alcohol consumption or outset of new drugs prior to vaccination. During investigation, the patient described two similar reactions in the past, 5 minutes after the administration of trometamol-containing contrast media (10 years before with an iodinated contrast and 2 years ago with a gadolinium contrast, both with trometamol). A week after the reaction all laboratory evaluation were within normal limits, including tryptase level. Skin tests were performed, 2 months after, with contrast media that contain trometamol (iopromide, iomeprol, iodixanol, ioversol, gadobutrol) and that do not (ioxitalamate, amidotrizoate, gadoterate meglumine), in accordance with the EAACI/ENDA guidelines. Iopromide and iodixanol were positive on intradermal testing (1:10 dilution), suggesting trometamol as the culprit excipient. She was advised not to receive the 2nd dose of Moderna vaccine. She received Pfizer-BioNTech vaccine at the hospital, without any reactions. This case demonstrates that an IgE-mediated reaction to trometamol may be an underlying mechanism for immediate hypersensitivity to mRNA Moderna vaccine. The risk of an allergic reaction to it increases when a previous history of hypersensitivity to contrast media exists.