Or you could just make up sh!t and believe that.
The facts are as follows:
This vaccine is one of 9 (out of several hundred companies and scientific bodies' attempts) that reach stage 3 trials a few months ago. ALL medicines pass through the same sort of approval process. If you're happy to take any type of medicine at all, it will have either been through the same or a weaker approval process. If, on the other hand, you firmly reject every aspect of modern medicine and see your witch-doctor for ailments..........
The process they all go through is lengthy, extensive, very expensive and designed by the world's leading experts (not internet morons) to be safe and effective. Firstly, they are tested (Stage 0) in vitro or on animals to make sure they're safe and have positive effects. Then they go through three stages of tests on humans, each stage of which requires prior approval from a regulatory body. They are concisely described here:
GSK United Kingdom
uk.gsk.com
Trial stages
If a drug passes all those hurdles, the full safety data and the results of the trials are then re-examined by expert medical boards by each country's medical regulators. Companies and regulators are very aware that any part of this process may end up being examined in a court of law in any jurisdiction where the drug is supplied.
This process means that vaccines are as safe as medical authorities claim beyond any rational level of doubt. Vaccines are highly effective at suppressing or eliminating disease when a high enough percentage of the population takes the vaccines, such that there is no "reservoir" of unvaccinated people for the vaccine to reside in.
And that is why anybody spreading misinformation or doubt on this topic is not only a cretin, but actually harming others and risking lives.