Question

QUESTION 93 The big problem with the oral polio virus vaccine is which of the following: A. many doses have not been properly inactivated OB. can revert to wild type poliovirus OC. must boost repeatedly OD.immunity wanes with time O E. very poor antigen QUESTION 94 The mRNA for parvovirus is transcribed by: A. virus-encoded DdRp OB. host-encoded DdRp C. host-encoded RdRp D. host-encoded RdDp E. virus-encoded RdRp

Answer 1

-problem with oral polio vaccine

1. B) can revert to wild type polio virus

-mRNA of parvovirus is transduced by

2.E) virus encoded RdRp.