Anti-HBs(+), anti-HBc(-), HBsAg(-) in the serum, the most likely explanation is()
A. HBV carriers
B. has already become chronic hepatitis B
C. The serum has infectivity
D. has already recover from hepatitis B
E. none of the above
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Which virus spread by the fecal-oral route ()
A. HAV
B. HBV
C. HCV
D. HIV
E. none of the above
The key of prevention from Japanese encephalitis is()
A. control mosquitoes
B. widespread vaccination to susceptible people
C. insulate patient
D. young pigs vaccination
E. none of the above
The latent location of HSVⅠis ()?
A. endotheliocyte in oral cavity mucosa
B. the trigeminal node
C. local lymph nodes capillary
D. lip
E. none of the above
Burkitt’lymphoma is characterized by elevated “early antigen” tests with a restricted pattern of flurescence. This disease is caused by ()
A. Cytomegalovirus
B. burdorferi
C. Epstein-Barr virus
D. Herpes simplex virus
E. none of the above
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