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Comparison of Grass Pollen Levels in 5 Cities of Argentina
Sunday, March 6, 2016
South Exhibit Hall H (Convention Center)
German D. Ramon, MD FAAAAI, Nadia Arango, Biologist, Laura B. Barrionuevo, Biologist, Maria S. Reyes, MD, Maximo Adamo, MD, Olga Molina, MD, Gustavo Serrano, MD, Pablo Fasano, MD, Anahi M Mendes, MD, Vilma I Villafañe, MD, Adrian M Kahn, MD FAAAAI
Rationale: Seasonal allergic diseases are triggered by airborne pollens. It is of medical interest to know air pollen levels in different regions. The aim of this study was to compare the intensity of grass pollen rain in five cities of Argentina during the period of greatest pollinosis. The cities sampled were Buenos Aires (CABA), Bahia Blanca (Buenos Aires), Bariloche (Rio Negro), Córdoba (Córdoba) Alto Valle de Rio Negro (Neuquen and Rio Negro).

Methods: We used Rotorod® impact samplers for pollen sampling. The data was daily and expressed in grains/m3 air. They were posted on the website of the NAB (http://www.aaaai.org/global/nab-pollen-counts/argentina.aspx) and the AAAeIC (http://www.alergia.org.ar / patients / pollens / index.htm).

Results: We found that the highest levels of pollens were counted in the cities of Bahia Blanca (November 14th, 57.60 g/m3) and Buenos Aires ((November 18th, 45.44 g/m3), and at the same time lower levels at the High Valley (December 15th, 13.14 g/m3), Bariloche (December 2nd, 10.22g/m3) and Córdoba (2 November, 5.44g/m3). It has been previously reported that grass pollen counts were higher by the end of December, but we were able to show an earlier peak of grasses by mid-November/early December.  These findings of different levels of grass pollen grains airborne in different cities of Argentina, are representative of the differences in the phytogeographical map, representing the extent of our country and the differences in their polinization.

Conclusions: We conclude that this type of study shows the differences in the pollen curves of different species in a particular area, probably related to climate differences.