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0.05]. There was negative correlation between wind speed and asthma admissions, [P<0.001]. Mean [+SD] values of asthma admissions during autumn [black smoke episode] were significantly increased during the year 2002-2004 where compared to other seasons, [P<0.001]. Although there was a significant decrease of PM10 levels during the year 2004, when compared to previous two years, [F=15.82, P=0.000], levels of SO2 and PM2.5 did not change significantly all over the three years. Vehicles, industrial, and burning emissions were the largest source of particulate matter pollution in Cairo. Open Burning contributes roughly 20% to more than 30% through the months of years, but during air pollution episode, more than 45% of particulate matter was due open burning.
Conclusions: Fluctuations in concentrations of SO2, PM10, and PM2.5 are strongly enunciated with patterns of attendance at emergency departments for acute asthma.
Recommendations: Although Particulate Matter Concentrations have fallen since the introduction of Cairo Air Improvement Programs in 1999, ambient air levels are still beyond the recommended air quality standards and vigorous efforts must be done to decrease burning emissions in order to improve air quality in Cairo. ]]>
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