@bolso1, Armando, you can submit your question to Dr. Poland here for consideration in the upcoming podcast.

Dr. Poland,
Why is their a one week difference between receiving the second shot of the Pfizer and the Moderna vaccine? After the first Pfizer shot, one can receive the second Pfizer vaccine in three weeks and the Moderna one, four weeks after the first. Is their a specific reason for this difference, since both vaccines supposedly are identical. It may be a mute point, however, I would be interested in hearing of your interpretation, if you have one. Thank you so much, and for your weekly videos on this subject. They are simply outstanding in every sense of the word.
Joseph Greco