9. If you can choose the brand, choose J&J
Ignore the low 66% efficacy of Johnson & Johnson's. Many Covid Vaccines are formulated to perform well against certain strains. It is like you have a special fishing rod mainly designed to catch snapper. J&J's version is a generic fishing rod that aims to help you to catch all types of fishes. J&J's version will catch less snapper but certainly more sharks, whales and groupers.
Most importantly, this vaccine uses the traditional method. It use cold virus to teach your body to defend against Covid. It is not gene therapy which has no track-record.
You may still get infected but J&J’s vaccine main objective is to stop u from getting very sick from Covid and recover easier.
No test volunteer got killed and it is more effective than many existing vaccines, against the more scary S.Africa variant.