It's a better decision to pursue your undergraduate studies from India and then look at either the USA or UK at the postgraduate stage. If you proceed with this study plan, you will get to know the nuances of Microbiology at the undergraduate stage and then will be in a better position to pick and choose a further specialization of Microbiology at the postgraduate stage and study at a university abroad.
After completing your undergraduate studies, a student should also aim to get a placement, work for at least 1 - 2 years and then aim for a post-graduate education abroad, as it will add more weightage to your profile.
For your undergraduate studies, you can follow the given link to know more about colleges offering Microbiology -http://career.ratqsci.tech/india/top-science-colleges-in-india-microbiology
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