基于j2ee的网上购物配送管理系统设计（Design of online shopping distribution management system based on J2EEFive）.docVIP

基于j2ee的网上购物配送管理系统设计（Design of online shopping distribution management system based on J2EEFive） Appendix: Specification for field investigation and treatment of dengue fever In order to timely, accurately and effectively deal with the epidemic situation of dengue fever and prevent the spread and spread of the epidemic, this regulation is formulated in accordance with the relevant laws and regulations of the law on the prevention and control of infectious diseases. I. Basic knowledge of dengue fever control (1) infectious sources. Dengue fever, recessive infection and virus bearing animals are the main infectious source and host of this disease. 1, patients. The patient is the main source of dengue fever. 3 days before the onset of the disease, patients with viremia within 10 days of the disease are the most important source of infection; light patients are less likely to be found and are much larger than the typical patients and are more dangerous sources of infection. The principle of case diagnosis: according to the epidemiological history, clinical manifestation and laboratory examination results of the patients, the diagnosis was made. The diagnosis should be serological or etiological. The cases were divided into three types: suspected cases, clinical diagnoses and laboratory confirmed cases. The three cases were treated as sources of infection. 2, latent infection. After the epidemic, the antibody levels in the population were high, suggesting that many people can acquire immunity through a latent infection, which can also be a source of infection during their viremia. 3. Virus bearing animals. Experiments have proved that non-human primates and other animals can carry dengue virus, may become the source of human dengue fever. (two) ways of communication. The main vectors of dengue fever in China are Aedes aegypti and Aedes albopictus. Aedes mosquitoes infected with the virus do not observe any disease, but the virus in the mosquito breeding, and can survive f