Dengue and arboviral diseases

Cumulative of Dengue Cases - Incidence per 100,000 population

Dengue is a mosquito-borne viral infection causing a severe flu-like illness and can lead to potentially lethal severe dengue. The incidence of dengue has increased 30-fold over the past 50 years. Between 50 and 100 million infections are now estimated annually in over 100 endemic countries, putting almost half of the world’s population at risk. The Aedes aegypti mosquito is the main vector that transmits the viruses that cause dengue.

Other arboviral diseases

Zika virus is also transmitted by infected aedes mosquitoes. It causes self-limiting illness with symptoms lasting 2–7 days, including mild fever, skin rash, conjunctivitis, muscle and joint pain, malaise and headaches. However, there is scientific consensus that Zika virus is also a cause of microcephaly and Guillain-Barré syndrome.

Chikungunya is another outbreak prone viral disease, also transmitted by infected Aedes mosquitoes. Those infected have symptoms such as high fever, joint pain and swelling, rash and fatigue.

Dengue in Cambodia

Dengue remains a public health problem in Cambodia, with 14 000 cases annual. Epidemics occur at intervals of 5 to 7 years. The worst outbreak occurred in 2007 when 39 851 cases and 407 deaths were reported. Dengue has spread to rural areas, increasing the population at risk from 3.5 million to almost 11 million. WHO strongly supports the National Dengue Control Program to develop prevention strategies and policies, as well as seroprevalence surveys and case management training at hospitals and health facilities.

Contact details

World Health Organization Representative Office Cambodia
1st Floor, No. 61-64,
Preah Norodom Blvd, Corner Street 306,
Sangkat Boeung Keng Kang I,
Khan Chamkamorn, Phnom Penh, Cambodia
Telephone: (855) 23 216610
Facsimile: (855) 23 216211
E-mail: wpkhmwr@who.int