“It seems that some protection starts to appear about 2 weeks after the first dose, and then this increases over time. But after a longer time – we aren’t yet sure how long – this protection is likely to start to fade again. So you will need a second booster dose to make sure your immune system can consolidate this protection for the long term. The benefits of the second dose start to appear after about 1 to 2 weeks.” I think by now this is general knowledge. One can still get Covid-19 if one is fully vaccinated. Apparently one does not get very sick though. In the Netherlands (and I think I’ve seen it in America too) it is still advised to wear masks in public buildings, public transport, and shops, and we still keep our distance to others. To me these things are common sense. Better safe than sorry.