P Praveen Singh 🎓 Tutor III ⭐ 36.81K Points 📊 Science Q. Vaccination was started by....... (A) Jonas E. Salk (B) Paul Muller (C) Robert Frost (D) Edward Jenner 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (D) Edward Jenner You must be Logged in to update hint/solution 💬 Discussion 💬 Comment