Hello Sabisha, 

Some of the top colleges for M.Sc in Microbiology in Kerala are mentioned below:

• Amrita Vishwa Vidyapeetham, Kollam
  
• Mahatma Gandhi University, Kottayam
• Kerala University of Fisheries and Ocean Studies, Kochi
• Cochin University of Science and Technology, Kochi
• Calicut University, Calicut
• Sree Narayana Guru Institute of Science and Technology, Emakulam