oleaceae pollen allergy and its cross-reactivity in the mediterranean area in the context of globalization.

opening frontiers has led in the last two decades to a massive migration of romanians to spain and italy, two countries known to have large areas planted with olives. romania owns large areas planted with ash forests. because of cross-reactivity between these two trees belonging to the oleaceae family and the big allergenic potential of olive pollens, after a number of years of residence in these countries, many romanians will present allergic respiratory symptoms of rhinitis and asthma, both in the season of olive pollination and ash pollination.