@queenie273646 I think it's fair what you're saying - purely in terms of timescales - that we don't know for sure about any potential long term effects of the vaccine as babies grow into children and adults. What we do know though is that typically vaccines don't have long term effects, and while these vaccines are new, the science behind them isn't, so the risk is low.
Also, if you are talking about potential long term unknown effects of the vaccine, you also have to think about the potential long term unknown effects of having covid in-utero? Which by the same logic due to timescales we can't fully understand either, with less science to understand the level of risk.
They have done studies now to show that in babies who've mothers have been vaccinated, the babies have covid antibodies only, without having been exposed to the virus. Where in babies who's mothers have had covid in pregnancy, the babies have antibodies that show they have also had covid. So we don't know the long term effects of that either, particularly given instances of 'long covid' in the population and the recent statistics of how often this is affecting children.
One thing we can do in terms of actual knowledge is to compare the short term risks. Which is to compare the numbers of pregnant vaccinated women with good outcomes to the status quo, and also to acknowledge the additional risks to both mother and baby that covid, particularly in 3rd trimester, poses - including increased risks of stillbirth, premature labour, intensive care and maternal mortality.