Lymph nodes are the where the spikes are supposed to end up. In people with normal immune systems the spikes won't last that long. In people with weak or abnormal immune systems the spikes will last longer. Same reason why such people take a long time to recover from a cold or flu.
It isn’t just found in the lymph nodes it’s also found in the left and right ventricles of the heart.
https://jessicar.substack.com/p/the-persistence-of-the-people-showing
Half of Vaccinated People Never Stop Producing Spike Protein, Study Found
COVID Vaccine is a GIFT THAT KEEPS ON GIVING
https://www.igor-chudov.com/p/half-of-vaccinated-people-never-stop