Possible sources of Bermuda sensitization in Timothy grass allergic subjects

Timothy and Bermuda grasses are associated with allergic rhinitis and asthma, worldwide. Timothy grass flourishes in temperate climates in northern parts of North America and Europe. Alternatively, Bermuda grass is a sub-tropical lawn grass and a widespread allergen in the southern United States. Although exposure to Bermuda grass in Ontario is non-existent due to the colder temperatures, we have observed a high frequency of skin sensitization to both grasses. We sought to investigate routes of sensitization to Bermuda grass in individuals with a positive skin-prick test to both Bermuda and Timothy grass. (Source: Journal of Allergy and Clinical Immunology)

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