Q. Which one of the following can not be used for preparation of vaccines against plague?
- Avirulent live bacteria
- Synthetic capsular polysaccharide material
- Heat-killed suspension of virulent bacteria
- Formalin-inactivated suspensions of virulent bacteria
Solution : Correct option : B Synthetic capsular polysaccharide vaccines are available for treatment of pneumonia and meningitis .Vaccines against plague are prepared from the Formalin-inactivated suspensions of virulent bacteria, Avirulent live bacteria and Heat-killed suspension of virulent bacteria . So the correct option is ‘Synthetic capsular polysaccharide material’.
