Related Experiment Video
Updated: Jul 4, 2025

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
Published on: June 4, 2017
RELATIONSHIP OF ALLERGIC DISEASES, POLLEN EXPOSURE AND COVID-19 IN GEORGIA
T Abramidze1, E Bochorishvili2, N Melikidze1
11Center for Allergy and Immunology Research, Tbilisi, Georgia.
Abstract:
Allergic diseases have been recognized as one of the global health issues and affect about a third of the worldwide population. COVID-19 pandemic has raised concerns about the risk of infection and the severity of COVID-19 infection in patients with asthma and allergic rhinitis. The aim of our study was to define the relationships between pollen exposures and SARS-CoV-2 infection rates in Georgia, as well as to characterize the Covid-19 autoimmune and antiviral responses in Georgian allergic patients with different sensitization patterns. Data on daily COVID-19 positivity rates, case fatality rates, and pollen concentrations from February 2020 to November 2022 were collected in Tbilisi, Kutaisi, and Batumi. Diagnostic parameters, including total IgE, specific IgE, eosinophil counts, anti-nuclear antibodies, and Covid-19 antibodies, were assessed in 181 atopic patients and 24 healthy controls with confirmed SARS-CoV-2 infection. Laboratory findings revealed significant variations in eosinophil counts and total IgE levels among the groups. ANA positivity did not exhibit substantial differences between atopic patients and healthy controls. Individuals with indoor allergies displayed lower SARS-CoV-2-specific antibody levels, potentially explained by variations in adaptive immune responses. There was no correlation between pollen concentration and COVID-19 epidemiological characteristics, indicating that pollen had no effect on virus epidemiology.
Related Concept Videos
Allergic Reactions
Asthma-I: Introduction
Cross-reactivity
Asthma: Pathogenesis and Management
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma-II: Pathophysiology and Classification
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Hypersensitivities
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...

