摘要
Currently,the threat posed by infectious diseases has been growing,especially when we face two main types of infectious diseases:emerging infectious diseases and re-emerging infectious diseases.Re-emerging infectious dis-eases are those that we have previously controlled,but have then emerged again;examples include tuberculosis,malaria,cholera,and syphilis.Emerging infectious dis-eases are mostly zoonosis infectious diseases,which ex-ist in the animal kingdom without apparent disease and continue to evolve.They do not attract our attention until they spill over into the human population and cause dis-ease,even a pandemic.Therefore,zoonosis diseases are ticking time bombs faced by the human population.We do not know when and where these diseases will occur,their scale,and we have no vaccines or medicines to im-mediately deal with these threats.
