The most upper figure shows dengue confirmed hospitalized cases by 2months in 1973 –2001. There has been general upward trend and more cases some year than others. Each year, peak hospitalization rates occur during the month of July thru October. The lower 4 graphs show isolations by dengue serotype for serotype 1, 2, 3 and 4 by 2 months. You will see clearer in the next slide.