Your first article states that the risk of a breakthrough case for someone with natural immunity is 13 times higher if the infection took place 6 months ago. It also states that vaccinating improves protection for those people.
This would seem to contradict your original claim (and validate my reply), since your statement was predicated on the assumption that someone who was naturally infected in 2020 has as much protection today as someone infected a month ago (or someone who was vaccinated a month ago).
Those 103 million Americans infected last year (well, the survivors anyway) would absolutely benefit from taking a vaccine now if they haven't already.
This would seem to contradict your original claim (and validate my reply), since your statement was predicated on the assumption that someone who was naturally infected in 2020 has as much protection today as someone infected a month ago (or someone who was vaccinated a month ago).
Those 103 million Americans infected last year (well, the survivors anyway) would absolutely benefit from taking a vaccine now if they haven't already.