Abstract
BackgroundDengue is the most prevalent mosquito-borne disease in the world, with China affected seriously in recent years. 65.8% of dengue cases identified in mainland China since 2005 were reported from the city of Guangzhou.MethodsIn this study, we described the incidence rate and distribution of dengue cases using data collected form National Notifiable Infectious Disease Reporting Information System data in Guangzhou for 2001 to 2016. All dengue cases were investigated using standardized questionnaire.ResultsA total of 42,469 dengue cases were reported, with an average annual incidence rate of 20.99 per 100,000 resident population. Over this time period, the incidence rate of indigenous cases increased. Dengue affected areas also expanded sharply geographically from 58.1% of communities affected during 2001–2005 to 96.4% of communities affected in 2011–2016. Overall 95.30% of the overseas imported cases were reported during March and December, while 99.79% of indigenous cases were reported during July and November. All four dengue virus serotypes were identified both in imported cases and indigenous cases. The Aedes albopictus mosquito was the only vector for dengue transmission in the area.ConclusionsGuangzhou has become the dengue epicenter in mainland China. Control strategies for dengue should be adjusted to the epidemiological characteristics above and intensive study need to be conducted to explore the factors that driving the rapid increase of dengue.
Highlights
Dengue is the most prevalent mosquito-borne disease in the world, with China affected seriously in recent years. 65.8% of dengue cases identified in mainland China since 2005 were reported from the city of Guangzhou
Data collection According to the Law on Prevention and Treatment of Infectious Diseases of China, suspected or confirmed dengue cases identified in medical institutions, must be reported to the National Notifiable Infectious Disease Reporting Information System (NIDRIS) within 24 h
Overall incidence During the 16 year period from 2001 to 2016, a total of 42,469 cases were reported to NIDRIS
Summary
Dengue is the most prevalent mosquito-borne disease in the world, with China affected seriously in recent years. 65.8% of dengue cases identified in mainland China since 2005 were reported from the city of Guangzhou. Dengue is the most prevalent mosquito-borne disease in the world, with China affected seriously in recent years. 65.8% of dengue cases identified in mainland China since 2005 were reported from the city of Guangzhou. Dengue is the most prevalent mosquito-borne disease in human beings, with estimated 390 million infections and 96 million symptomatic cases in the endemic areas, which has a population of 3.6 billion [1]. The clinical spectrum of dengue ranges from asymptomatic infection to severe disease, which can progress to highly. China has experienced local dengue transmission mainly in the southern provinces such as Hainan, Guangdong, Guangxi, Fujian, Zhejiang since 1978, which was the beginning year of the dengue epidemic in. From 1978 to present, dengue fever has occurred every year in Guangdong Province, China, and most of the cases are from Guangzhou, the capital city of Guangdong Province. In the past three decades, Aedes albopictus had been monitored as the vector for dengue transmission in Guangzhou, with
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