The outcome of the vaccination process is being monitored, and in any case the effectiveness of the vaccine is actually the primary thing the studies were intended to show and that is fairly well established.
Do you know the percent of people with blood clots after vaccine was administered? I believe only one of the vaccines was involved in blood clots.
Since these were developed as gene therapy techniques and not as “vaccines” I’m sure those behind them have a lot more on their plate.
Even aside from milking it for all the money they can get.