Dengue virus has increased dramatically within the last 20 years, becoming one of the worst mosquito-borne human pathogens with which tropical countries have to deal. Current estimates indicate that as many as 390 million infections occur each year, and many dengue infections are increasingly understood to be asymptomatic or subclinical.
A Dengue fever outbreak in the Indian state of Kerala in May and June 2017 had caused 6808 confirmed infections and 13 deaths by June 16. In Sri Lanka, there were 180,000 reported cases in 2017. The majority of cases being reported from the Western province.
The United States Centers for Disease Control and Prevention (CDC) began counting the 2017–2018 "flu season" as October 2017, and by early February 2018, the epidemic was still widespread and increasing overall. By February 2018, the CDC said that the circulating virus strains included both B strains (Yamagata and Victoria), H1N1 and H3N2.
In the 2017 dengue outbreak in Peshawar, Pakistan, hundreds of incidents of dengue fever were reported in Peshawar in mid-2017. Initially, according to the health department of Khyber Pakhtunkhwa, 4,320 suspected cases were received by Khyber Teaching Hospital Peshawar and 831 were positive. About a dozen people died of dengue, starting in July.
Deaths. ~40,000. Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Symptoms typically begin three to fourteen days after infection. These may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic skin rash. Recovery generally takes two to seven days.
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The Eliminate Dengue program spread to 10 countries throughout Asia, Latin America, and the Western Pacific blooming into the non-profit organization, World Mosquito Program, as of September 2017. They still use the same technique of infecting wild populations of Ae. aegypti as they did in Australia, but this time their target disease has ...
Others, such as the dengue virus, are spread by blood-sucking insects. Viruses, especially those made of RNA, can mutate rapidly to give rise to new types. Hosts may have little protection against such new forms. Influenza virus, for example, changes often, so a new vaccine is needed each year.
West Nile virus (WNV) is a single-stranded RNA virus that causes West Nile fever. It is a member of the family Flaviviridae, specifically from the genus Flavivirus, which also contains the Zika virus, dengue virus, and yellow fever virus. West Nile virus is primarily transmitted by mosquitoes, mostly species of Culex.
Influenza, commonly known as "the flu", is an infectious disease caused by an influenza virus. Symptoms can be mild to severe. The most common symptoms include: high fever, runny nose, sore throat, muscle and joint pain, headache, coughing, and feeling tired.
Aedes mosquitoes transmit dengue virus, causing both classical dengue fever (DF) and potentially fatal dengue haemorrhagic fever (DHF). The first reported epidemic of DHF occurred in Southeast Asia in 1953 2. Since the first dengue epidemic outbreak in Thailand in 1958 3, there has been an upward trend in the incidence of DHF. In 2010, Sisaket province in Thailand was classified as a dengue high risk area.
- S. Wongkoon, M. Jaroensutasinee, K. Jaroensutasinee