• 2022-06-06
    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.