Avoidance of Inhaled Pollutants and Irritants in Asthma from a Salutogenic Perspective.

Much is known about the role of aeroallergens in asthma, but little is described about the damage caused by inhaled pollutants and irritants to the respiratory epithelium. In this context, the most frequent pollutants and irritants inhaled in the home environment were identified, describing the possible repercussions that may occur in the respiratory tract of the pediatric population with asthma and highlighting the role of the caregiver in environmental control through a salutogenic perspective. Searches were carried out in the MEDLINE/PubMed, Web of Science, Lilacs and Scopus databases for articles considered relevant for the theoretical foundation of this integrative review, in which interactions between exposure to pollutants and inhaled irritants and lung involvement. Articles published in the last 10 years that used the following descriptors were considered: air pollution; tobacco; particulate matter; disinfectants; hydrocarbons, fluorinated; odorants; chloramines; pesticide; asthma; and beyond Antonovsky's sense of coherence. Exposure to smoke and some substances found in cleaning products, such as benzalkonium chloride, ethylenediaminetetraacetic acid and monoethanolamine, offer potential risks for sensitization and exacerbation of asthma. The vast majority of the seven main inhaled products investigated provoke irritative inflammatory reactions and oxidative imbalance in the respiratory epithelium. In turn, the caregiver's role is essential in health promotion and the clinical control of paediatric asthma. From a salutogenic point of view, pollutants and irritants inhaled at home should be carefully investigated in the clinical history so that strategies to remove or reduce exposures can be used by caregivers of children and adolescents with asthma.

Heart rate variability in school-age children born moderate-to-late preterm.

BACKGROUND: Prematurity is associated with reduced cardiac autonomic function. This study aimed to investigate the heart rate variability (HRV) in school-age children born moderately to late preterm (MLPT). METHODS: This cross-sectional study investigated school-age children, aged 5 to 10 years, born moderate-to-late preterm. Electrocardiograms recordings were performed during fifteen-minutes. Time and frequency domain parameters were calculated, corrected for heart rate and compared between the groups. RESULTS: A total of 123 children were evaluated and 119 were included in this study. HRV measures, studied in the time and frequency domains, were similar in both groups. Corrected values of root mean square of successive differences between normal cycles (RMSSD), percentage of successive cycles with a duration difference >50 ms (pNN50%), and high frequency (HF), indices that predominantly represent the parasympathetic activity of the autonomic nervous system, were 1.6E-7 and 1.8E-7 (p=0.226); 1.6E-13 and 1.6E-13 (p=0.506); 6.9E-12 and 7.4E-12 (p=0.968) in the preterm and control groups, respectively. CONCLUSION: This study did not find differences in heart rate variability between school-age children born MLPT and those born at term, suggesting that plasticity of cardiac autonomic modulation continues to occur in children up to school age or there is less impairment of the autonomic system in MLPT.

Respiratory allergy symptoms and cytokine profiles in the presence of anti-Ascaris antibody in Giardia lamblia-infected children.

Anti-Ascaris lumbricoides (Asc) IgE and IgG can immunomodulate the allergy; however, the influence of these isotypes has not been investigated in the giardiasis and allergy. Therefore, the frequency of respiratory allergy (RA) symptoms in Giardia lamblia-infected children, with or without anti-Asc IgE, IgG1, or IgG4 and Th1, Th2/Treg, and Th17 cytokine production, was evaluated. We performed a case-control study with children aged 2-10 years old selected by questionnaire and stool exams to form the groups: infected or uninfected with RA (G-RA, n = 55; nG-RA, n = 43); infected and uninfected without RA (G-nRA, n = 59; nG-nRA, n = 54). We performed blood leukocyte counts and in vitro culture. Cytokine levels in the supernatants (CBA), serum total IgE and anti-Asc IgE (ImmunoCAP), IgG1, IgG4, and total IgA (ELISA) were measured. Infection was not associated with allergy. Infected children showed increased levels of anti-Asc IgG1, IL-2, IFN-γ, IL-4, and IL-10. There was a lower frequency of allergy-related symptoms in anti-Asc IgG1-positive children than IgG1-negative (OR = 0.38; CI = 0.17-0.90, p = 0.027) and few eosinophils in G-RA than in G-nRA and more in G-nRA than in nG-nRA, whereas TNF-α levels were higher in the G-RA than in the nG-nRA group. For infected and positive anti-Asc IgG1, there was higher TNF-α and IL-10 production than G/-IgG1. IL-10 levels were lower in nG/ + IgG1 than in infected or non-infected, and both were negative for anti-Asc IgG1. Th1/Th2/IL-10 profiles were stimulated in the infected patients, and in those with circulating anti-Asc IgG1, the TNF-α production was strengthened with a lower risk for respiratory allergy symptoms.

Is there cardiac autonomic dysfunction in children and adolescents with exercise-induced bronchospasm?

BACKGROUND: The pulmonary impairment in patients with bronchoconstriction induced by eucapnic voluntary hyperpnea(EVH) goes beyond the respiratory system, also impairing autonomic nervous modulation. This study aimed to evaluate the behavior of cardiac autonomic modulation in young asthmatics with and without EIB after the EVH test. RESEARCH DESIGN AND METHODS: A cross-sectional study design using 54 asthmatics(51.9% female), aged between 10 and 19 years, investigated with the EVH test. Forced expiratory volume in one second(FEV1) was measured at 5, 10, 15, and 30 min after EVH. Heart rate variability(HRV) measures of time were assessed pre and 30 min-post EVH. The diagnosis of Exercise-Induced bronchoconstriction with underlying clinical asthma(EIBA) was confirmed by a fall in FEV1 ≥10% compared to baseline. RESULTS: Thirty(55.5%) asthmatics had EIBA. Subjects with EIBA have reduced mean of the R-R intervals in relation to baseline until 15 minutes after EVH. Individuals without EIBA had increased parasympathetic activity compared to baseline(rMSSD) from 5 min after EVH(p < 0.05). This parasympathetic activity increase in relation to baseline was seen in individuals with EIBA after 25 minutes (rMSSD = 49.9 ± 5.3 vs 63.5 ± 7.2, p < 0.05). CONCLUSION: Young asthmatics with EIBA present a delay in the increase of the parasympathetic component after EVH when compared to asthmatics without EIBA.

Teste de provocação oral com alimentos: o panorama brasileiro / Oral food challenge: a Brazilian panorama

Introdução: O teste de provocação oral (TPO) com alimentos é o padrão ouro para avaliação diagnóstica e de aquisição de tolerância em pacientes com alergia alimentar (AA). Exige, no entanto, equipe especializada e local apropriado para execução, uma vez que reações alérgicas, incluindo anafilaxia, podem acontecer. Foi recém-incorporado como procedimento reconhecido pelo Sistema Único de Saúde e pela Agência Nacional de Saúde, mas apenas no contexto da alergia ao leite de vaca para pacientes com até 24 meses de vida. Pouco se sabe sobre sua disponibilidade/execução no território brasileiro. Objetivos: Explorar o perfil de realização de TPO com alimentos em âmbito nacional, bem como as limitações para a sua não realização. Métodos: Inquérito virtual foi disponibilizado por e-mail aos 2.500 sócios cadastrados na Associação Brasileira de Alergia e Imunologia questionando sobre a prática de TPO, formação do profissional, limitações para sua não realização e possíveis soluções para sua execução. Resultados: Foram obtidas 290 respostas (11,6% dos associados), sendo a maioria deles proveniente da Região Sudeste (56,1%). Realizam TPO 54,5% (158/290) dos associados, 62% destes mais de 5 TPOs/mês, principalmente para leite e ovo. A execução de TPO na atualidade, majoritariamente na rede privada, esteve associada à prática do procedimento durante a especialização. Falta de recurso e ambiente apropriados são as maiores limitações para a não realização do TPO. Conclusões: Apesar do viés de seleção inerente à metodologia empregada do estudo, este inquérito pioneiro em território nacional tem importância por esclarecer e discutir a realização do TPO no âmbito do Brasil. Certamente este procedimento ainda é insuficientemente realizado no Brasil.

Background: Oral food challenge (OFC), the gold standard for diagnosing food allergy and determining tolerance levels, requires specialized staff and appropriate conditions since anaphylaxis may occur. In 2022, OFC was officially recognized in Brazilian public and private health systems, although only for milk allergy in children up to 24 months of age. Little is known about OFC practices in Brazil. Objectives: To explore OFC practices, barriers, and solutions among Brazilian allergists and immunologists. Methods: A survey was e-mailed to 2500 associates of the Brazilian Association of Allergy and Immunology regarding OFC practices, training experiences, barriers to this procedure, and workable solutions. Results: A total of 290 associates responded (11.6%), more than a half of whom (56.15) practiced in the southeast region: 158 (54.5%) reported performing OFC, of whom 62% performed > 5 procedures each month, mostly for cow milk and hen egg. OFCs were mostly performed in private practice and were associated with specialized training. Lack of an appropriate setting was seen as the main barrier to performing the procedure. Conclusions: Although this study's methodology involves intrinsic biases, this is the first exploration of OFC practice in Brazil. OFCs are still underperformed nationwide.

Reações de hipersensibilidade a vacinas / Hypersensitivity reactions to vaccines

O desenvolvimento e a ampliação do uso das vacinas durante décadas contribuíram para o controle e erradicação de doenças infecciosas, causando um grande impacto na saúde pública no mundo. A análise de segurança das vacinas percorre criteriosos processos e fases dos estudos clínicos, um dos pilares essenciais para aprovação regulatória e utilização do produto na população. O evento supostamente atribuído à vacinação e imunização (ESAVI), terminologia atual, é definido como qualquer ocorrência médica indesejada após a vacinação que possui, ou não, uma relação causal com o uso de uma vacina ou outro imunobiológico. Cabe ressaltar que eventos adversos mais raros ou inesperados, incluindo os eventos de hipersensibilidade, poderão ocorrer na fase pós-comercialização, quando as vacinas são aplicadas em milhões de pessoas. Neste artigo, serão discutidos os principais aspectos relacionados aos eventos adversos de hipersensibilidade pós-vacinais de interesse do especialista, e os desafios frente ao reconhecimento do agente causal e conduta a ser adotada. Além disso, serão revisados os potenciais alérgenos presentes nas vacinas de uso rotineiro para auxiliar o profissional de saúde na identificação de pacientes com potencial de risco de ESAVI por tais componentes. A atualização do conhecimento acerca da segurança e dos benefícios das vacinas pelos profissionais de saúde, sobretudo em populações especiais, contribui para condutas em imunização mais apropriadas, reduzindo o risco de exposição a um possível alérgeno em pessoas comprovadamente alérgicas às vacinas ou a alguns dos seus componentes, além de evitar contraindicações desnecessárias em eventos coincidentes ou não graves.

The expansion of vaccine use and development in recent decades has contributed to the control and eradication of infectious diseases, causing a major impact on public health worldwide. Vaccine safety analysis, which involves careful processes and clinical study, is one of the essential pillars of regulatory approval and use in the population. In current terminology, events supposedly attributable to vaccination and immunization (ESAVI) are defined as any unwanted medical occurrence after vaccination that may or may not have a causal relationship with vaccines or other immunobiologicals. It is noteworthy that rare or unexpected adverse events, including hypersensitivity, can occur during the post-marketing phase, when vaccines are administered to millions of people. In this article, we will discuss the main aspects of post-vaccine hypersensitivity events of interest to specialists and challenges to recognizing the causal agent and appropriate clinical practice. Potential allergens in routine vaccines will also be reviewed to help health professionals identify patients with a potential risk of ESAVI due to such components. Updating health professionals' knowledge about the safety and benefits of vaccines, particularly in special populations, can contribute to more appropriate clinical practice regarding immunization, reducing the risk of exposure to possible allergens in people with allergies to vaccines or their components, avoiding unnecessary contraindications in coincidental or non-serious events.

Allergic Rhinitis in Preschoolers: A Systematic Review of Diagnostics.

BACKGROUND: Most studies that seek to analyze the prevalence of allergic rhinitis do not include preschool children and the diagnosis in this age group is difficult. OBJECTIVE: Identify complementary tests to the diagnosis of allergic rhinitis in preschool children and verify if there is scientific robustness to propose a diagnostic algorithm for this condition in this age group. METHODS: Systematic review of the literature in four databases: SCIELO, PubMed/MEDLINE, LILACS and SCOPUS. Each article was initially chosen by title, abstract and by the keywords "allergic rhinitis," "diagnosis" and "preschool." Those articles selected entered the complete reading and data extraction phase. The study was registered in the International Prospective Register of Systematic Reviews under number CRD42020207053. RESULTS: Fourteen articles were suitable for analysis. In the assessment using Quality Assessment of Diagnostic Accuracy Studies - 2, all studies had at least one domain considered "high risk" or "undetermined risk." Seven reports of nasal cytology, seven of specific IgE, four of immediate hypersensitivity skin test, one of nasal nitric oxide, three of total IgE and one of urinary leukotriene E4 were found. Eight articles evaluated more than one diagnostic test. CONCLUSION: There are no defined criteria for the diagnosis of allergic rhinitis in preschool children. Nasal cytology, serum specific IgE and immediate hypersensitivity skin test were the most used tests. A reliable diagnostic criterion in this age group is necessary so that in the future it is possible to propose a diagnostic algorithm for allergic rhinitis in preschool children.

Caregiver's sense of coherence and adherence to paediatric asthma treatment.

Asthma is a chronic respiratory condition that needs to be well controlled to avoid compromising patients' quality of life. In the paediatric population, the role of caregivers is essential in this process. Moreover, adequate asthma control is integral to a child's emotional well-being and to improving the child's ability to participate fully in family and social life. One of the main reasons for uncontrolled asthma is low adherence to treatment, by patients and caregivers. Identifying factors mediating the involvement and participation of caregivers through evaluations of caregivers' sense of coherence can help in the adoption of strategies aimed at effectively directing adherence behaviour through educational and motivational interventions. The goal of this review article is to provide an overview of the sense of coherence as a construct of Antonovsky's salutogenic theory, and to identify its role as a key piece in the successful management of asthma in children.

Dermatite atópica grave: guia prático de tratamento da Associação Brasileira de Alergia e Imunologia e Sociedade Brasileira de Pediatria / Severe atopic dermatitis: a practical treatment guide from the Brazilian Association of Allergy and Immunology and the Brazilian Society of Pediatrics

A dermatite atópica (DA) é uma doença cutânea inflamatória, crônica, comum, complexa e de etiologia multifatorial, que se manifesta clinicamente com prurido muitas vezes incapacitante, lesões recorrentes do tipo eczema, xerose e que pode evoluir para liquenificação. Embora o conhecimento sobre a sua fisiopatologia venham crescendo nos últimos anos, ainda as formas graves são frequentes e representam um desafio para o clínico. Para o presente guia realizou-se revisão não sistemática da literatura relacionada à DA grave refratária aos tratamentos habituais com o objetivo de elaborar um documento prático e que auxilie na compreensão dos mecanismos envolvidos na DA, assim como dos possíveis fatores de risco associados à sua apresentação. A integridade da barreira cutânea é um dos pontos fundamentais para a manutenção da homeostase da pele. Além dos cuidados gerais: evitação dos agentes desencadeantes e/ou irritantes, o uso de hidratantes, suporte emocional, entre outros, o uso de agentes anti-inflamatórios/imunossupressores de uso tópico e/ou sistêmico também foi revisado. A aquisição de novos agentes, os imunobiológicos e as pequenas moléculas, melhorou a terapêutica para os pacientes com formas graves de DA, sobretudo as refratárias aos tratamentos convencionais.

Atopic dermatitis is a chronic, common, and complex inflammatory skin disease with a multifactorial etiology. It manifests clinically with often disabling pruritus, recurrent eczema-like lesions, and xerosis, and can progress to lichenification. Although understanding of the disease's pathophysiology has been growing in recent years, severe forms are still frequent and represent a challenge for clinicians. A non-systematic review of the literature on severe atopic dermatitis refractory to conventional treatment was conducted to develop the present guide, whose purpose is to help clarify the mechanisms involved in the disease and possible risk factors. The integrity of the skin barrier is fundamental for maintaining skin homeostasis. In addition to general care, patients should avoid triggering and/or irritating agents and moisturizers and seek emotional support, etc.; the use of topical and/or systemic anti-inflammatory/immunosuppressive agents was also reviewed. New agents, immunobiologicals, and small molecules have led to a broader range of therapies for patients with severe forms of the disease, especially cases refractory to conventional treatment.

Alergia alimentar autodeclarada em idosos no Brasil: prevalência e características clínicas ­ Protocolo de estudo / Self-reported food allergy among older Brazilians: prevalence and clinical characteristics ­ a study protocol

Nas últimas décadas tem se observado um aumento expressivo na prevalência de alergia alimentar (AA), com frequência estimada em adultos de 3% a 8%, sendo ainda mais relevante quando se avalia a AA autodeclarada (variação de 3% a 35%). Entretanto, são poucos os dados publicados sobre a prevalência de AA em idosos, e no Brasil tais dados são inexistentes. O objetivo principal deste protocolo de estudo é conhecer a prevalência de AA autodeclarada em idosos (≥ 60 anos) brasileiros. Trata-se de estudo epidemiológico transversal que utiliza questionário padronizado e validado para a língua portuguesa. Entre os vários aspectos investigados, serão avaliados quais alimentos e sintomas são os mais relacionados à AA nestes indivíduos. Os dados obtidos serão transcritos a planilha Excel para realização da análise estatística. A obtenção dessas informações permitirá compará-las às existentes, assim como estabelecer planos de abordagem destes pacientes.

In recent decades, there has been a significant increase in the prevalence of food allergies, reaching an estimated frequency of 3% to 8% in adults and even higher in self-reports (from 3% to 35%). However, published data on the prevalence of food allergies among older adults are scarce, and in Brazil they are non-existent. The main objective of this study was to investigate the prevalence of self-reported food allergy among older Brazilians (≥ 60 years). This cross-sectional epidemiological study protocol involves a questionnaire that was developed, standardized, and validated in Portuguese. The investigated aspects will include the foods and symptoms most commonly associated with food allergy in this population. The data will be input into an Excel spreadsheet for statistical analysis. Obtaining this data will allow comparison of the results with previous data and help establish treatment plans for these patients.

Assistência a pacientes com doenças imunoalérgicas no Sistema Único de Saúde brasileiro ­ Carta de São Paulo / Treating patients with allergic diseases in the Brazilian Unified Health System ­ Letter from São Paulo

O Sistema Único de Saúde (SUS) abrange todos os níveis de atenção à saúde e garante acesso integral, universal e gratuito para toda a população brasileira. As transições demográfica e epidemiológica observadas nas últimas décadas trouxeram um cenário de maior prevalência das doenças imunoalérgicas. Nesse contexto, a implementação de políticas de saúde voltadas à assistência à saúde dessa população tornou-se um desafio. Com o objetivo de discutir a atenção à saúde dos pacientes com doenças alérgicas e imunológicas no Brasil, a Associação Brasileira de Alergia e Imunologia (ASBAI) realizou em 26 de agosto de 2022, na cidade de São Paulo, o Fórum sobre a Assistência a Pacientes com Doenças Imunoalérgicas no SUS. O evento foi estruturado no formato de painéis e contou com a participação de membros da ASBAI e representantes da gestão pública federal, do Ministério Público, de sociedade de pacientes e profissionais de saúde de diversos serviços com experiência em programas e projetos bem sucedidos na assistência a pacientes com doenças imunoalérgicas. Após a discussão, concluiu-se que ainda existem muitas necessidades não atendidas em relação à atenção à saúde da população com doenças alérgicas e imunológicas no Brasil. A ASBAI tem trabalhado no sentido de contribuir para organizar, implantar e manter a assistência a estes pacientes no âmbito do SUS.

The Brazilian Unified Health System covers all levels of health care and guarantees full, universal and free access for the entire population. The demographic and epidemiological transitions observed in recent decades have led to a higher prevalence of allergic diseases. In this context, implementing health policies to benefit these patients has become a challenge. To discuss health care for patients with allergic and immunological diseases in Brazil, the Brazilian Association of Allergy and Immunology (ASBAI) held a forum in São Paulo on August 26, 2022 called "Treating Patients with Allergic Diseases in the Unified Health System". The event's panels included members of ASBAI, representatives of the federal government, the attorney general's office, patients, and health professionals from various services with experience in successful programs for patients with allergic diseases. It was concluded that there are still many unmet health care needs for Brazilians with allergic and immunological diseases. ASBAI is contributing to the organization, implementation, and maintenance of care for these patients within the scope of the Unified Health System.

Good clinical practice recommendations in allergen immunotherapy: Position paper of the Brazilian Association of Allergy and Immunology - ASBAI.

Background: Allergen Immunotherapy (AIT) represents one of the pillars in the treatment of allergic diseases. AIT is the only therapeutic strategy with curative potential, promoting the reduction of drug use and long-term symptom control even after the end of the treatment. The European Academy of Allergy, Asthma and Immunology (EAACI) guidelines, position papers of World Allergy Organization (WAO), and the US Practice Parameters are the leading official documents that set scientific standard for the use of AIT in the world. The use of AIT in Brazil has specific regional conditions due to the pattern of allergen sensitization, as well as genetic, socioeconomic, and cultural characteristics, climate conditions, and the availability of allergenic extracts. The most prevalent house dust mites are Dermatophagoides pteronyssinus, Dermatophagoides farinae and their allergens have the highest clinical relevance. Blomia tropicalis is also very frequent. This position paper has been prepared by the Brazilian Association of Allergy and Clinical Immunology (ASBAI) Taskforce on AIT for respiratory allergy and Hymenoptera venom allergy. Objective: According to the current scientific literature adapted to the Brazilian reality, this position paper aims to establish the main recommendations for the good clinical practice parameters for AIT in Brazil. Methods: A systematic review using the Pub Med and Cochrane databases was performed, and the websites of major allergy and immunology organizations were consulted. The research was limited to English language literature and was conducted between March 30, 2002, and March 30, 2022. The terms used for the research were: Allergen Immunotherapy, sublingual immunotherapy (SLIT), subcutaneous immunotherapy (SCIT), venom-specific immunotherapy (VIT), and allergen extract. Results: The several recommendations that establish the clinical practices for AIT recommended by the main Allergy, Asthma and Immunology world organizations were analyzed and adapted to the Brazilian situation. Conclusion: This position paper establishes the main recommendations for the effective clinical practice of AIT in Brazil, using current knowledge of evidence-based medicine and precision medicine.

Dificuldades do diagnóstico de rinite alérgica em lactentes: revisão sistemática / Difficulties in diagnosing allergic rhinitis in infants: a systematic review

Introdução: Rinite alérgica em lactentes é uma condição negligenciada, principalmente pelo seu diagnóstico desafiador. Objetivo: O presente estudo propõe identificar os métodos de investigação usados para o diagnóstico de rinite alérgica em lactentes. Método: Dois examinadores, de forma independente, realizaram busca sistemática da literatura, de abril a agosto de 2020, utilizando quatro bases de dados: Scopus, PubMed/ MEDLINE, SciELO e LILACS. Foram usadas as seguintes palavras-chaves: rinite alérgica, diagnóstico e lactente. Foram pesquisados estudos originais na língua inglesa e espanhola, com crianças de 0 a 2 anos de idade, sem distinção de data de publicação. Resultados: Em análise crítica dos cinco estudos selecionados, percebeu-se grande heterogeneidade de definição de rinite alérgica em crianças menores de dois anos. Não foram encontrados estudos que estabeleceram um teste índice e o padrão ouro e não houve comparação entre os métodos diagnósticos disponíveis. A variabilidade e a inespecificidade de sintomas clínicos de rinite alérgica em lactentes, associadas ao fato de que a sensibilização a aeroalérgenos não tem necessariamente significado clínico, representam uma dificuldade para o correto diagnóstico de rinite alérgica em crianças pequenas. Conclusão: Para o diagnóstico de rinite alérgica em lactentes, é fundamental que o médico assistente realize cuidadosa anamnese e exame físico, além de testes para detectar sensibilização alérgica com correta interpretação do resultado e correlação com a história clínica e exame físico do paciente.

Background: Allergic rhinitis has been neglected in infants, mainly because the diagnosis is challenging. Objective: To identify the methods used to diagnose allergic rhinitis in infants. Methods: From April to August 2020, 2 independent reviewers systematically searched Scopus, PubMed/MEDLINE, SciELO, and LILACS databases using the following keywords: allergic rhinitis, diagnosis, and infant. The search considered original studies in English or Spanish involving children aged 0 to 2 years, regardless of publication date. Results: A critical analysis of the 5 included studies showed great heterogeneity in the definition of allergic rhinitis in children under 2 years of age. No studies were found that established an index test or gold standard, and there was no comparison between the available diagnostic methods. Because the clinical symptoms of allergic rhinitis in infants are variable and nonspecific and sensitization to aeroallergens is not necessarily clinically significant, making an accurate diagnosis of allergic rhinitis remains difficult in young children. Conclusion: Careful medical history and physical examination by the attending physician are essential for the diagnosis of allergic rhinitis in infants, as are the tests to be used for the detection of allergic sensitization, whose results should be correctly interpreted and correlated with the patient's medical history and physical examination.

Prevalence of reported food allergies in Brazilian preschoolers living in a small Brazilian city.

INTRODUCTION: Although the prevalence of allergic diseases, including food allergies, has increased over recent decades, relevant information on this topic is still lacking, particularly in younger children living in small cities. OBJECTIVE: To investigate the prevalence of reported food allergies in preschoolers in Limoeiro/Pernambuco, Brazil. METHODS: This was a cross-sectional study with preschoolers. Parents/guardians of all preschoolers enrolled at municipal schools between March and June 2019 (total of 619) were invited to complete a screening questionnaire (total of 619). Another 151 questionnaires were applied on the streets of the town. For positive responses, a second, more detailed and validated questionnaire was completed. RESULTS: A total of 412 questionnaires were returned, of which, 47 presented a positive response to food allergies and only 29 (7.04%) identified a particular food. The most frequently reported food items were shrimp, mollusks, pork, fruit and milk. Of the 29 who identified foods, 22 responded to the detailed questionnaire, resulting in only 4 (0.97%) positive responses. Of these, two were later discarded through clinical examinations and an open oral provocation test, resulting in a final prevalence of 0.48% of confirmed food allergies. CONCLUSION: The prevalence of reported food allergies was lower than that described in previous studies. The most commonly mentioned foods were shrimp, mollusks and pork, with more reports of multiple food allergies, even in children who had never been previously exposed to these possible allergens, which highlights the relevance of perception in reported food allergy studies.

The specialty of allergy and clinical immunology in Brazil.

Objective: To assess the profile of allergist/immunologist (A/I) physicians in Brazil, the workplace, the access to diagnostic and therapeutic procedures, and the impact of the COVID-19 pandemic on professional practice. Methods: This cross-sectional study was conducted as an online survey. All adhering members of the Brazilian Association of Allergy and Immunology (ASBAI) received a Google Forms tool by email. The questionnaire addressed sociodemographic and professional aspects of the Brazilian allergists/immunologists (A/I) daily routine. The information was analyzed by SPSS version 20.0. Results: Four hundred and sixty members answered the questionnaire. Women were predominant among the responders (336; 73%), and the median age was 47 years (range, 27-82 years). Most participants worked in the private sector (437, 95%), whereas 256 (47%) worked in the public sector. Among the public sector employees, 210 (82%) reported having access to some diagnostic test for allergic diseases and inborn errors of immunity. Only 91 (35%) A/I physicians in the public system had access to allergen-specific immunotherapy, compared to 416 (95, 9%) of those in the private sector. Regarding biological drugs, 135 (52.7%) and 314 (71.9%) of the A/I physicians working in the public and private sector, respectively, reported access. Two hundred and eighty-three (61.6%) had at least a 50% reduction in the number of consultations, and 245 (56%) provided telemedicine care during the COVID-19 pandemic. Conclusion: Brazilian A/I have incorporated the most recent advances in managing immunoallergic diseases into their clinical practice, but they still have little access to various diagnostic methods. Strategies to enable the presence of A/I in public health services should be discussed and implemented. The coronavirus pandemic has accelerated the incorporation of telemedicine as a viable and promising method of medical care and can expand access to the specialty.