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I am one of the people who has already heard back. I got my e-mail almost a week ago! I think you should send an email or trying calling them. I hope it's good news for you!

Have you tried checking your status on Minerva? https://horizon.mcgill.ca/pban1/twbkwbis.P_WWWLogin If your status still says "Ready for Review" then you should probably send them an e-mail to inquire.

I think you should consider applying to both MPH and PhD programs and see what happens. I agree with ZeroFlux that an MPH will be useful to you. A Masters will help you gauge your enthusiasm (or lack thereof) for research and you will be more prepared for doing a PhD when the time comes. An MPH will also, most likely, help your GPA.