The 2006 dengue outbreak in Delhi, India.

Dengue is a worldwide condition spread throughout the tropical and subtropical zones between 30 degrees north and 40 degrees south. It is endemic in South East Asia, the pacific, East and West Africa, the Caribbean and the Americas. Dengue outbreaks are occurring almost every three yearly in Delhi for the last 12 years. The latest outbreak was in the year 2006, which started late in August, peaked in the month of October and lasted till late November. We describe here the clinical, hematological and biochemical data of 70 patients of dengue fever diagnosed as per WHO criteria in Lok Nayak Hospital, New Delhi during this outbreak. Hematological parameters were estimated by automated counter and dengue serology was done by capture ELISA technique. The results displayed widespread effect of dengue fever on hematological and biochemical profile. Some of our patients also had atypical dengue manifestations. These results suggest that dengue fever is a major public health problem which can lead to significant morbidity and can even be fatal at times. All efforts should be made to prevent it.