Wheat-dependent exercise-induced anaphylaxis with Tri-a-14-sensitization as part of a lipid transfer protein syndrome

COVID-19-Impfungen: Replizierend oder Nichtreplizierend?

Innovative and effective vaccination strategies are the most important lever to address the global SARS-COV2 pandemic. Within months scientists all over the world have developed promising new vaccines, many of which use adenoviral vectors to incorporate immunogenic molecules of SARS-coronavirus in order to elicit effective immune responses. The Gamaleya institute developed the COVID-19 vaccine named Sputnik (Gam-COVID-Vac) using adenoviral vectors ad 26 and ad5 to incorporate a full SARS-Spike Protein for vaccination. Two differing vectors enable so called prime-boost, thus avoiding neutralizing effects against the vector itself, ensuring proper immunogenicity against the vaccine. Current available published evidence has raised controversy among small sample sizes in phase II and early endpoints in phase III studies with Sputnik and scientific community took notice that full study protocols and clinical data haven't been made available yet. Patient subgroups and vaccination efficacy in healthy vaccinated may be at risk in case of partial viral replication of Ad5 vectors or when batch to batch reproducibility is not warranted, as concerns from authorities in Brazil and Slovakia have recently been raised. Final approval by governing health authorities (e. g. EMA) should therefore be awaited.

Allergische Reaktionen auf COVID-19-Impfungen – Was HNO-Ärzte wissen sollten – Teil 1: Immunologische Grundlagen von Allergien auf Impfstoffe, Immunmechanismen von allergischen und pseudoallergischen Reaktionen; Teil 2: Charakteristika der mRNA-Impfstoffe BNT162b2- und mRNA-1273 zur Prophylaxe von COVID-19 und assoziierte Immunphänomene; Teil 3: Praktische Aspekte der Prophylaxe, Diagnostik und Therapie von Allergien auf COVID-19-Impfstoffe

Allergic reactions against mRNA COVID-19 vaccine are yet uncommon, but due to the high number of people who get this vaccination anaphylaxis will be seen. This is especially so in people who are sensitized to components of the vaccine. This article focuses on practical aspects of diagnostic possibilities, prevention, recognition and therapy of anaphylactic reactions. High-risk population, who should not get vaccinated; as well as people who need allergy diagnostics before vaccinations are discussed. In opinion of allergy experts patients with atopic allergies or venom allergies do not have a higher risk regarding anaphylaxic reaction due to COVID vaccination.

Allergische Reaktionen auf COVID-19-Impfungen – Was HNO-Ärzte wissen sollten – Teil 1: Allgemeine Aspekte von Allergien auf Impfstoffe, immunologische Grundlagen von Allergien auf Impfstoffe, Immunmechanismen von allergischen und pseudoallergischen Reaktionen; Teil 2: Charakteristiken der mRNA-Impfstoffe BNT162b2 und mRNA-1273 zur Prophylaxe von COVID-19, weitere Impfstoff-Kandidaten und assoziierte Immunphänomene; Teil 3: Praktische Aspekte der Prophylaxe, Diagnostik und Therapie von Allergien auf COVID-19-Impfstoffe

Vaccinations are the gold-standard in order to prevent dangerous infectious diseases. Within 12 months since the RNA sequence of SARS-COV2 has been published already two RNA vaccines against COVID-19 have been licensed and are broadly used in many relevant parts of the world. Matching the challenge of an unprecedented global pandemic unique collaborative approaches have made available several vaccines based on a variety of technological platforms that are under current development. This article explains the characteristics, biology and pharmacology of subunit-vaccines, inactivated and attenuated vaccines, Virus-like-Particle vaccines, recombinant strategies based on adenoviral vectors and newly developed and first time in human licensed RNA-vaccines that came into scope recently. Allergic reactions against the vaccine and its components have been reported but are yet uncommon, however need good documentation such as other side-effects and immune-phenomena. In rare cases where allergy against vaccine components such as PEGs is considered, such PEGs can be tested using a skin-prick test. Development of innovative vaccine technology and antiviral medication is of strategic relevance in the best sense of "pandemic preparedness" for the future.