COVID-19(8) SARS-CoV-2.(7) allergy(3) drug hypersensitivity(2) Asthma(2) Polyethylene glycol(2) SARS-CoV-2(2) Loss of Smell(2) coronavirus(2) anaphylaxis(1) allergen immunotherapy(1) desensitization(1) Icatibant(1) Taste disorder.(1) First wave(1) impact factor(1) SARS-CoV-2 vaccine.(1) Adverse drug reaction(1) COVID-19 infection(1) Anosmia(1) Atopic diseases(1) Hospital admission(1) Exhaled nitric oxide(1) Allergoid(1) Polysorbates(1) Severe acute respiratory syndrome.(1) Prevalence(1) PEG(1) Cutaneous manifestations(1) mRNA vaccine.(1)