"I am 66 years old. I was diagnosed with PPMS last year. I received my 1st half Ocrevus infusion on 10/18/21. My 2nd half infusion on 11/02/21. And am due my 1st full infusion on 05/06/22. I received my 3rd full Moderna vaccination on 01/27/22. I want to get my Moderna booster but I don't want this to interfere with my infusion in May. I would appreciate your thoughts on when I can safely do this. Thanks."