There was only one peak in the epidemic curve of a disease, and all
cases are concentrated in the common incubation period of the
disease, then the disease transmission mode maybe ( ).
A: both
homologous and continuous
B: common source epidemic
C: mixed type
D: human to human
E: unable to judge
cases are concentrated in the common incubation period of the
disease, then the disease transmission mode maybe ( ).
A: both
homologous and continuous
B: common source epidemic
C: mixed type
D: human to human
E: unable to judge
举一反三
- The<br/>three basic links in epidemic process refer to (). A: The<br/>source of infection B: Factors of transmission C: The<br/>route of transmission D: The susceptible population E: Transmission<br/>mode
- The earliest discovery of human beings and the most common chromosomal disease in clinic, is the following:
- An<br/>outbreak( ) of disease in a bird population is called () A: epidemic B: endemic C: sporadic D: Epornithic
- 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.
- Which term refers to the number of new cases of an infectious disease in a given area or population during a given period of time? A: prevalence: B: incidence, C: epidemic, D: endemic