Mark is a technician in a blood bank at a local hospital. It is required that ev

Question

Mark is a technician in a blood bank at a local hospital. It is required that everyone who works with human blood products be vaccinated against hepatitis B virus. Following his vaccination it was found that Mark was not responsive. As Mark's physician you decide to investigate into Mark’s family medical history. You find out that both of Mark parents worked for the American Red -Cross when Mark was conceived. As Red Cross workers, Mark parents had to be vaccinated against hepatitis B virus. The vaccine used was a live attenuated virus.

Choose the correct answer and fully defend your answer.

Mark's failure to respond to the vaccine is due to:

bad and ineffective vaccine

Mark's parents were not careful while taking the vaccine

Mark did not really take the vaccine

Mark has no B- cells to respond to the vaccine

The question is just so stupid that I decided not to answer it.

Explanation / Answer

Mark did not really take the vaccine

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