Diseases can be prevented by means of vaccination or ____________________.
举一反三
- Which of the following diseases can be prevented by toxoid A: enteric fever B: dysentery C: tetanus D: syphilis E: tuberculosis
- How can the hold-and-wait condition be prevented?
- How can the circular-wait condition be prevented?
- 中国大学MOOC: Smallpox can be effectively prevented by _______.
- Which of the following is an example of a sickness that can be prevented by a vaccine?