Good evening

Hope you are absolutely, per you query many of top college in India offers B.tech microbiology and immunology course, like:

-> Indian Institute of Technology
-> National Institute of Technology
-> The Jawaharlal Institute of Postgraduate Medical Education & Research
-> Vels Institute of Science, Technology and Advanced Studies (VISTAS),
-> Anna University, National Institute of Immunology,
-> Government Medical College Surat,
-> Alagappa Institute of Technology,

for more information checkout given link below:

https://www.careers360.com/courses/microbiology-and-immunology-engineering-course#:~:text=Some%20of%20the%20best%20universities,Alagappa%20Institute%20of%20Technology%2C%20etc.

Hope you found it helpful
All the best!!!