Vaccinate, inoculate and immunize are three words that describe the "jab" people get to guard them against serious infectious illnesses. Harmonious - yes - but each offers a different consumer expectation.
How long do or should clinical trials take – well, it depends – but often years. Science takes time. It demands rigor and objectivity. It’s not a “now” pursuit.
While medicine has become more advanced and specialized, it has also become increasingly fragmented. For people is hard-to-diagnose conditions, that's another obstacle to care.