Of the following viruses, which one mostly establish subclinical infection? ()
A. Measles virus
B. Polio virus
C. Rabies virus
D. Hantann virus
E. HBV
查看答案
Which virus spread by the fecal-oral route? ()
A. HAV
B. HBV
C. HIV
D. Influenza virus
E. Rubella virus
This hepatitis virus is a defective virus in that it cannot replicate independently without the presence of hepatitis B virus. ()
A. Hepatius A
B. Hepatitis B
C. Hepatitis C
D. Hepatitis D
E. Hepatitis E
Chicken pox is a common disease of childhood. It is caused by which of the following viruses ? ()
A. Cytomegalovirus
B. Rotavirus
C. Varicella-zoster virus
D. Adenovirus
E. Papillomavirus
Acquired immunodeficiency syndrome is caused by ()
A. HTLV-Ⅰ
B. CMV
C. RSV
D. HIV-Ⅰ
E. HTLV-Ⅱ