Toxoplasma gondii is a single-celled parasite that infects nearly all warm-blooded animals, including humans (Montoya and Liesenfeld, 2004). It occurs worldwide and can persist for a lifetime in mammals. Humans get infected by eating undercooked meat of animals containing the tissue cysts of this parasite. In immune-competent individuals, T. gondii infection usually does not cause significant clinical symptoms, whereas in pregnant or immunocompromised individuals, T. gondii infection (toxoplasmosis) can cause more serious problems like abortion and even death (Dunn et al., 1999; Wang et al., 2017). A combination of pyrimethamine and sulfadiazine is usually used to treat toxoplasmosis, although it is generally inefficient and causes side effects (Alday and Doggett, 2017). Worse still, there is a lack of vaccines to prevent T. gondii infection in humans or animals.
Toxoplasma/enzymology* ; Animals ; Humans ; Toxoplasmosis ; Mitochondria/enzymology* ; Protozoan Proteins/metabolism*

Objective To study the epidemical status of notifiable infectious diseases in navy from 1992 to 2006,in order to set a scientific basis for working out the measures of preventing from infectious diseases.Methods The reported data were classified by the current national approach and descriptively analyzed concerning infectious diseases during a period of 1992 to 2006 based on the Infectious Disease Surveillance and Reporting System of Chinese PLA.Results 6626 cases of 34 different notifiable infectious diseases were reported in PLA Navy during 1992-2006.Class A,B and C notifiable infectious disease were all reported.There was one death case.Viral hepatitis,dysentery and pulmonary tuberculosis ranked the top situation composing 78.84% of the total cases.The types of infectious diseases during 1992-1999 were less than that during 2000-2006,while the incidence was opposite.Gastrointestinal diseases were the major infectious diseases,accounting for 50.89%.The reported incidence of gastrointestinal diseases declined,and that of respiratory diseases ascended.Blood-borne and sexually transmitted infectious diseases accounted for 18.04%.Natural focal and arthropod-borne disease accounted for 4.95%.Conclusion Certain achievements in prevention and control of infectious diseases have been made since the present century.However,gastrointestinal and respiratory diseases should remain to be regarded,especially for viral hepatitis,pulmonary tuberculosis,dysentery,chicken pox and mumps.In the meantime the propaganda and education on the knowledge of disease prevention should be strengthened among the focus groups.