Sourav is the founder and sole author of Biology Notes Online. He holds a Master’s degree in Microbiology from Calcutta University and has over 5 years of experience in academic writing, life science content creation.
His content reflects hands-on lab expertise, deep subject knowledge, and a strong passion for simplifying biology for students. Whether it’s genetics, microscopy, or metabolic pathways — Sourav explains it in a way that’s accurate, exam-focused, and easy to remember.
He regularly updates and fact-checks all the material published on this site, ensuring students get trustworthy and updated biology notes with references to real scientific sources.
Epidemiology is the branch of public health that studies the distribution, patterns, and causes of diseases and health conditions in populations. It aims to identify risk factors for diseases, understand how they spread, and develop strategies to prevent or control health problems. Epidemiologists use data and research to track health trends and inform public health policy, disease prevention, and health promotion efforts.
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