Pollen

Patients infected with SARS-CoV-2 had altered growth patterns in their blood and showed signs of reduced immune cells 10 months after infection, according to a study published in Allergy.

Ambient pollen exposure increases allergy symptom severity, but a lack of exposure threshold may impact pollen warning systems, according to the European Journal of Allergy and Clinical Immunology.

Airborne pollen may be a major cause of asthma-related ED visits during peak pollen season, but the risk varies by location and plant composition, according to a study published in Environmental Research.

SAN ANTONIO — Climate change is making allergies and asthma worse, but patient education and professional advocacy may mitigate these impacts, Jeffrey Demain, MD, FAAAAI, FACAAI, FAAP, told Healio.

Patients with allergic rhinitis experience a greater number and diversity of symptoms when they have increasing numbers of sensitizations, according to a study published in Annals of Allergy, Asthma & Immunology.

Healio compiled the most-read news in allergy, asthma and immunology posted in May.

Pollen predictions on public websites across five U.S. cities showed significant inaccuracies, according to a study published in The Journal of Allergy and Clinical Immunology: In Practice.

The therapeutic efficacy of purified pollen extract in reducing vasomotor and other perimenopausal symptoms is questionable, but is likely safe, according to a systematic review and meta-analysis published in Menopause.

Patients experienced a rapid reduction in allergic inflammation caused by an intradermal grass pollen challenge after one dose of a first-in-class peptide, according to a press release from Revolo Biotherapeutics.

Increases in concentrations of grass pollen were associated with increases in risk for food skin prick test reactivity and eczema flares in children, according to a study published in Pediatric Allergy and Immunology.