From how to display areas at risk from the disease influenza-2556 (2013) 2552 (2009) Demonstrates the vulnerable areas, 5 levels are changed every year. According to geographic factors, the data from statistics measuring the air station across the country, where the level of the different areas have both changed and remained the same in both because of the influence of the wind. Groove air pressure, etc.T healthy or make changes throughout the year.
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