I figure it can't hurt. They usually accept a bunch of people off the waitlist every year (of course, each year is different), and so, even though a lot of people are interested in attending Hopkins, it seems that a surprising number of accepted applicants every year choose to go elsewhere when given a choice (probably due to the location and pricetag). If you can make an argument for why Hopkins is the best match for you (and you for Hopkins) perhaps it will increase your appeal in the eyes of the adcom.
I am afraid to call and have them say, "no, don't send us anything more." So, I am going to hope for the best (since they have not explicitly asked NOT to be sent anything, at least, not from what I can recall) and send a letter of update/interest in a couple of months, and if they don't want it, well, they can chuck it. But, maybe they'll take the time to read it....
But, if sending potentially unwanted info is something you would rather not do...then I would advise calling them (and posting what they say...if you don't mind 😀 ).
Best of luck!