RESUMEN
Dengue fever is an acute infectious disease caused by dengue virus , which is mainly endemic in tropical and subtropical regions .Dengue virus can be classified into four serological serotypes ( DV-1 , DV-2 , DV-3 , and DV-4 ) .All of these serotypes are epidemic in China , but the dominant one thereof is DV-1.Since 1978, dengue fever epidemic has been reported almost every year , especially in the severely-afflicted area, Guangdong province , where more than 40 thousand people were infected with dengue fever in 2014 , thus arousing serious public concern .However , even now the public lack the knowledge about dengue fever , thus affecting the effects of prophylactic and control measures for public health.To solve this problem ,this paper introduces and analyzes dengue fever in terms of epidemic distri-bution rules, pathogenic characteristics of virus , clinical features for relevant diseases , prophylactic and control measures for dengue epidemic , etc.
RESUMEN
Zika virus was discovered in 1947 and was believed to be epidemic only in the Asia , Europe and Africa .However , in 2015 , the Zika virus was first spread to Brazil , and then to most other countries in Americas .Zika virus is a member of the Flaviviridae family and can be classified into the Asian lineage and the African lineage .Most Zika virus infections are asymptomatic ,but can be neurotropic or teratogenic ,giving rise to adult Guillain-Barre syndrome and neonatal microcephaly. Zika virus is primarily transmitted by mosquito-spread , besides , it can also be transmitted through blood transmission , sexual transmission ,and vertical transmission .At present , the most effective measure to prevent and control the spread of Zika virus is to control Aedes .No vaccines against Zika virus have appeared on the market so far .