What do I need to apply for PhD in biostatistics?

[cactus 88]

About me: I graduated 5 years ago with a BA in English & Spanish. After working in public health for about a year I went on to do a MS in Epidemiology, which I loved and did well in. Both degrees were done in the UK. Moved back to the US 2 years ago thinking I might want to go to medical school, so have been working in clinical research at a large academic school and taking med-school pre-reqs (bio, physics, chemistry, biochem, etc) on the side. After working closely with physicians and getting to see a lot of different elements of clinical medicine/research, I am reconsidering my career path (again...), and am becoming more interested in the research/bioinformatics side of medicine. Luckily my MS was quantitatively strong and I have taken classes in calculus, biostats, bayes, and infectious disease modeling already. For those accepted to, pursuing, or graduated from a PhD in stats/biostats...what do you think my chances of acceptance are? If 0, what would improve them? Thanks for your advice!

[1%learnings]

you made a great switch

and you'll be doinng far more good than the rest of the ppl in the universe

 

why are you concern about chances?

 

what you should care about is the leading edge of your field/area

that's what you always would want

 

not like the 99% of society