A Admin 🎓 Coach ⭐ 38.23K Points 📊 Microbiology Q. Prophylaxis of cholera is (A) Protected water supply (B) Environmental sanitation (C) Immunisation with killed vaccines (D) All of these 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (D) All of these