Safe? Yes. Effective? To be determined. If you administer it willy-nilly then how do you determine how effective it is? Clinical trials are a necessity.
Trials are necessary? Even if aborted babies were used to develop it?
they have no idea what is safe or not. long-term effects have to be followed-up on and studied.
look at the history of china’s original SARS (1) vaccine. absolutely not safe. I have read the cdc originally wanted to roll it out here but the NIH nixed it.