Occurrence: Dengue occurrence is sporadic throughout the year. Epidemic usually occurs during the rainy seasons June – November. Peak months are September and October. DHF are observed most exclusively among children of the indigenous population under 15 years of age. Occurrence is greatest in the areas of high Aedis Aegypti prevalence.
Notifiable Diseases and Deaths by Cause in the Philippines (2001 – 2004) Source: National Statistics Office 15,838 18,039 13,187 23,235 Dengue Fever Deaths Cases Deaths Cases Deaths Cases Deaths Cases Reported Reported Reported Reported Notifiable Diseases 2004 2003 2002 2001
INCIDENCE OF DENGUE HEMORRHAGIC FEVER IN CEBU CITY (YEAR 2007) Source: Department of Health Region VII 2007 … … 416 … … 43, 350 Dengue / DHF female male total female male total Disease: Communicable Year Number of Deaths Number of New Cases Selected
Mode of Transmission: Mosquito bite (Aedis Aegypti) Incubation Period: Probably 6 days to one week Period of Communicability: Presumed to be on the 1 st week of illness – when virus is still present in the blood Susceptibility and resistance: All persons are susceptible. Both sexes are equally affected. The age groups predominantly affected are the preschool age and school age. Adults and infants are not exempted. Peak age affected 5-9 years. Susceptibility is universal. Acquired immunity may be temporary but usually permanent.