When did dengue start in Sri Lanka?
There is evidence that dengue viruses (DENVs) have been circulating in Sri Lanka during the 1960s, and first outbreaks of dengue infections were reported in 1965 (26 cases and 6 deaths) and in 1972 (27 cases) [6,7].
What year was the highest case of dengue recorded?
The largest previous epidemic of dengue was in 2015, but the 2019 number of 2,733,635 cases is 13 percent higher than the 2015 numbers. Despite the increase in case numbers, the lethality rate, or proportion of deaths in dengue cases, was 26 percent less in 2019.
Is dengue an epidemic in Sri Lanka?
In 2017, a dengue epidemic of unexpected magnitude occurred in Sri Lanka. A total of 186,101 suspected cases and 440 dengue-related deaths occurred. We conducted a comprehensive analysis of this epidemic by comparing national surveillance data for 2017 with data from the preceding 5 years.
How common is dengue fever in Sri Lanka?
Authorities reported 25,067 dengue fever cases in Sri Lanka in 2021, 31,162 cases in 2020, and 105,049 cases in 2019. Dengue fever is a nationwide and year-round risk in Sri Lanka, but transmission rates are typically highest May-July and October-January. A dengue fever vaccine is available in some countries.
When was the first dengue case reported?
The first epidemic of clinical dengue-like illness was recorded in Madras (now Chennai) in 1780 and the first virologically proved epidemic of DF in India occurred in Calcutta and Eastern Coast of India in 1963-19645–7.
What is the trend of dengue infection from 2010 to 2014?
The national prevalence rate of dengue decreased gradually from 8 to 4 per 100 000 population between 2010 and 2013, but it increased substantially in 2014 and 2015 to 67 and 187 per 100 000 population, respectively.
Are there a lot of mosquitos in Sri Lanka?
Well over 3,500 species of mosquitoes were found and described, and new species are about to discover. Sri Lanka is home to 131 species of mosquitoes that included to 16 genera with 17 endemic species.
Which country has the first case of dengue fever?
Outbreaks of febrile illnesses compatible with dengue fever have been recorded throughout history, with the first epidemic described in 1635 in the West Indies.
Why did the number of dengue cases drop in a span of 5 year?
This is due to rapid urbanization and population growth, inadequate water supply and poor management of domestic water containers, poor sanitary and living conditions, and other factors that can contribute to the favorable multiplication of the virus and the mosquito vectors such as climate change.
How many cases of dengue are there in 2020?
Between EW 1 and 53 of 2020, a total of 2,327,166 cases of dengue were reported in the Region of the Americas, with a cumulative incidence of 238.38 cases per 100,000 population.
What is the most common disease in Sri Lanka?
Diarrhoea, dysentery and giardiasis. Diarrhoea remains the most common complaint amongst tourists visiting Sri Lanka. It can have many causes, including serious diseases like typhoid or cholera, but in the vast majority of cases diarrhoea is a result of contaminated food or drink and will pass naturally in a few days.
What year did dengue start?
In 1779-1780, the first confirmed, reported outbreak of dengue fever occurred almost simultaneously in Asia, North America, and Africa. In 1789, the American physician Benjamin Rush published an account of a probable dengue fever epidemic that had occurred in Philadelphia in 1780.