Why was the COVID-19 Vaccine put on Hold?

The COVID Vaccine was put on hold because of a Participant/Patient that fell ill and got serious side effects that were found after the patient had received the vaccine for the Coronavirus, AstraZeneca's attempted to create this Vaccine but failed, the process was halted because a patient had side effects from the vaccine. This patient developed side effects and slowly contracted an Unkown Disease, the Patient had symptoms of the Flue and COVID-19 so, in turn, they halted the vaccine.

I found some of the research difficult because the news sites didn't give all of the information. The research was fun though, choosing the question was hard.

We did this to boost our knowledge with general questions about Politics and world events. Some of the questions were difficult and hard to answer. I foduns oem fo the questions hard to answer, I'm not quite sure how many quesitons I got right in the quiz.