There is an increase in the number of cases of respiratory syndromes in children in outpatient clinics in a city located in the interior of Ceará, northeastern Brazil. The occurrence of cases at the climatic level is investigated and the aim is to find out if the same phenomenon is also seen in other cities with a semi-arid climate and what are the possible causes for the increase in these demands in the places of care. The beginning of the dry season in the region is highlighted and an attempt is made to find out the relationship between climate and respiratory syndromes.
Pollen travels more easily in dry air than in moist air. Some plants will release more pollen when the air is dry, than if it is moist. Also, soil that is drier may put many existing plants into stress, and stress conditions are often related with higher pollen produced. In many cities in the US southwest, areas that are mostly dry and hot, allergies were almost unknown in the past, but when modern landscaping was brought in, the new, non-native landscape plants, clonal male trees especially, produced very large amounts of pollen, and now these same areas are considered quite allergenic.
Dry air affect the environment in addition to its effect on the respiratory tract itself because dry air when enter the respiratory system need more water vapor to become moist in addition that in dry air more pollens more dust more allergic substances will be released
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