Highlights1. What is already known about this topic? SARS-CoV-2 causes asymptomatic or mild infection in about 80% of humans, while an excessive immune response has killed millions. Differential susceptibility and risk factors became a concern early in the pandemic. Several monogenic defects that involve innate viral sensors or affect interferon response pathways, as well as autoantibodies against type 1 interferons, have been identified in 14% of patients with life-threatening COVID-19. The impact of the novel betacoronavirus infection in patients with known inborn errors of immunity is less clear. Case series and reports from different countries have suggested a minor impact or even a potential protective effect of the IEI for some patients.2. What does this article add to our knowledge? We describe findings and outcomes of COVID-19 in 31 pediatric and adult patients with known IEI from Mexico, 84% of whom survived. Pediatric patients had a higher hospitalization rate. Inpatient mortality was 40%, and ICU mortality was 63%. Six patients died of secondary bacterial infection or uncontrolled systemic inflammation, but not from overwhelming viral infection. One patient with an autoinflammatory disorder under treatment with anakinra had a catastrophic clinical course. Eighty percent of patients received IVIG as part of their treatment for acute SARS-CoV-2 infection.3. How does this study impact current management guidelines? We recommend continued and/or high-dose IVIG in patients with known IEI seeking care for COVID-19. Patients with autoinflammatory disorders, especially those with inflammasome dysregulation, should probably take extreme measures to prevent exposure, while doctors taking care of SARS-CoV-2 infected patients with immune deficiencies must do everything they can to prevent secondary bacterial infections. The high survival of patients with COVID-19 in the context of inborn errors of immunity worldwide (over 80%) might be the result of patientphysician awareness and special care.

Generation of full-thickness skin equivalents using hair follicle-derived primary human keratinocytes and fibroblasts.

Background: Latex-fruit syndrome (LFS) is characterized by allergy to latex and plants. Papain, chymopapain, caricaine and class I chitinases are papaya's most allergenic proteins. The similarity between latex hevein epitopes and papaya class I chitinases might explain the latex-papaya syndrome (LPS). Objective: To describe the clinical characteristics of patients with LPS. Methods: Cross-sectional, observational, descriptive study where 11 patients diagnosed with latex allergy by skin prick test and clinically diagnosed with papaya-induced anaphylaxis were included The results were analyzed with descriptive statistics. Results: Out of 11 patients with LPS, 72.7% were females (7 to 46 years), all with a history of papaya-induced anaphylaxis, identifi ed by medical history and medical notes plus latex-positive skin prick tests, with 63.3% exhibiting anaphylaxis in the skin prick tests. Risk factors included multiple surgeries, another allergic disease, and being employed in the fi eld of health; 63.6% were allergic to to other foods, 45.4% to medications, 45.4% had allergic rhinitis and 27.3% had asthma. Conclusions: Hypersensitivity to papaya increases the risk of anaphylaxis in patients with latex allergy and, therefore, mortality. Clinical data is the main diagnostic tool. Education for the management of anaphylaxis with adrenaline self-administration is essential.

Las inmunodeficiencias primarias (IDP) son enfermedades de baja incidencia, causadas por defectos en genes involucrados en el desarrollo, mantenimiento y regulación del sistema inmune. La inmunodeficiencia común variable (IDCV) es la inmunodeficiencia sintomática más común de la edad adulta. Tiene una prevalencia aproximada de 1 en 25 000-50 000 en la población general, con un retraso en el diagnóstico entre 6-7 años. Las manifestaciones clínicas de la IDCV, constituyen 6 categorías principales: infecciones, complicaciones pulmonares, enfermedad granulomatosa o linfocítica policlonal, autoinmunidad, enfermedades gastrointestinales y neoplasias. La mayoría de los pacientes debe tener al menos una de las siguientes manifestaciones clínicas (infección, autoinmunidad, linfoproliferación). No obstante, el diagnóstico de IDCV puede ser conferido en pacientes asintomáticos especialmente en casos familiares. Las causas secundarias de hipogammaglobulinemia, deben ser descartadas en cualquier paciente que reúna los criterios diagnósticos para IDCV, ya que el tratamiento puede ser totalmente diferente al que se requiere para la IDCV. Debido a que la IDCV comprende un grupo heterogéneo de síndromes con producción deficiente de anticuerpos de tipo primario, el número potencial de entidades dentro de este grupo se desconoce. Los pacientes con IDCV sufren diversas complicaciones que se consideran pronósticas. En ausencia de directrices claras de su búsqueda, se recomienda que durante la evaluación inicial se indague intencionadamente enfermedad linfoproliferativa, enfermedad pulmonar, hepática y autoinmunidad. Los intervalos en los cuales deben realizarse no están claros, pero se pueden requerir varias evaluaciones al año, de acuerdo con la evolución clínica del paciente.