Aerobiologia

, Volume 8, Issue 1, pp 27–30 | Cite as

Ragweed evidence in Brianza (a hilly area North to Milan)

  • Giuseppe Piazza
  • Guglielmo Marco Migliorino
  • Lucia Cassani
  • Fabrizio Della Torre
Article

Summary

Since 1982 we have been monitoring allergological pollen, by means of a Lanzoni pollen trap VPPS 2000. In 1988 we detected the ragweed pollen for the first time, and subsequently in 1989 and in 1990.

In 1988 it had been monitored from 16/8 to 26/9 (highest concentration 66.5 gr/m3/24 h on 3/9), in 1989 from 7/8 to 23/9 (highest concentration 30.0 gr/m3/24 h on 10/9) and in 1990 from 3/8 to 23/9 (highest concentration 80.9 gr/m3/24 h on 2/9). During the same years the prick test for ragweed pollen turned out to be positive in 27 patients out of 1526 (1.76%) in 1988, in 25 patients out of 1517 (1.64%) in 1989 and in 56 patients out of 1614 (3.41%) in 1990.

The presence of specific IgE turned out to be positive in 12 patients out of 189 (6.35%) in 1988, in 17 patients out of 195 (8.71%) in 1989 and in 22 patients out of 230 (9.56%) in 1990.

During out 3-years investigation, on the basis of the severity of symptoms and of the possible multi-sensitization, only 2 patients have undergone a specific immunotherapy to ragweed pollen.

Our data confirm the presence of ragweed pollen in Lombardy, even if the sensitization is low in our population and the clinical significance of ragweed pollinosis is even lower.

Nevertheless the high sensitizing power of this pollen makes a higher incidence of ragweed pollinosis possible in coming years.

Key words

immunotherapy Prick test ragweed pollen specific IgE 
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Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • Giuseppe Piazza
    • 1
  • Guglielmo Marco Migliorino
    • 1
  • Lucia Cassani
    • 1
  • Fabrizio Della Torre
    • 1
  1. 1.Pneumology DepartmentINRCACasatenovo (Como)Italy

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