A pathogen causes
举一反三
- The most common pathogen that causes acute pyogenic osteomyelitis is ____. A: hemolytic streptococcus B: pseudomonas aeruginosa C: colon bacillus D: streptococcus E: staphylococcus aureus
- Primary infection is that the first time that the host plants are exposed to and infected by a pathogen?
- What are the hazards of alien species invasion? A: Causes sterility of other plants B: Causes economic losses C: Causes ecological disasters D: Causes social unrest
- Secondary infection also refers to the second time a host becomes infected with the same pathogen?
- The basic features of infectious disease are A: There are infectivity, pathogen, epidemic, immunity. B: There are infectivity, patients, immunity, epidemic. C: There are source of infection, route of transmission, susceptibility, immunity. D: There are infectivity, epidemic, endemic, relapse. E: There are pathogen, reinfection, epidemic, immunity.