Population of the city of San Diego on March 31, 2003 = 183,000 and number of new active cases of malaria occurring between January 1 and June 30, 2008 = 26 Number of active malaria cases according to the city register on June 30, 2003 = 264.
The prevalence rate of active malaria as of June 30, 2003.
What is the incidence rate of active malaria cases in a 6-month period?