By NewsDesk  @infectiousdiseasenews

The Sri Lanka Ministry of Health’s Epidemiology Unit has reported 25,795 dengue fever cases through today, a total lower than the 35,294 cases seen during the first seven months of 2020, when Sri Lanka reported more than 105,000 cases for the year.

Aedes aegypti

Colombo has reported the most cases with 3,675, while Kandy has seen 2659 cases.

The Director at the National Dengue Control Unit, Dr. Aruna Jayasekara said 23 dengue patients have died so far this year.

Officials also warn that there is an increased risk in the spread of  dengue due to the rainy season.

Dr. Jayasekara urged the general public to clean their surroundings and prevent the spread of Dengue mosquitoes.

Dengue is a viral infection transmitted by the bite of an infected mosquito. There are four closely related but antigenically different serotypes of the virus that can cause dengue (DEN1, DEN 2, DEN 3, DEN 4).

Dengue Fever (DF) – marked by an onset of sudden high fever, severe headache, pain behind the eyes, and pain in muscles and joints. Some may also have a rash and varying degree of bleeding from various parts of the body (including nose, mouth and gums or skin bruising).Dengue has a wide spectrum of infection outcome (asymptomatic to symptomatic). Symptomatic illness can vary from dengue fever (DF) to the more serious dengue hemorrhagic fever (DHF).

Dengue Hemorrhagic Fever (DHF) – is a more severe form, seen only in a small proportion of those infected. DHF is a stereotypic illness characterized by 3 phases; febrile phase with high continuous fever usually lasting for less than 7 days; critical phase (plasma leaking) lasting 1-2 days usually apparent when fever comes down, leading to shock if not detected and treated early; convalescence phase lasting 2-5 days with improvement of appetite, bradycardia (slow heart rate), convalescent rash (white patches in red background), often accompanied by generalized itching (more intense in palms and soles), and diuresis (increase urine output).

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Dengue Shock Syndrome (DSS) — Shock syndrome is a dangerous complication of dengue infection and is associated with high mortality. Severe dengue occurs as a result of secondary infection with a different virus serotype. Increased vascular permeability, together with myocardial dysfunction and dehydration, contribute to the development of shock, with resultant multiorgan failure.

Aedes aegypti mosquito