Who reported the medicinal importance of antibiotics?

Explanation

**Step-by-Step Solution:**

1. **Understanding Antibiotics**: Antibiotics are chemical substances produced by certain microbes that inhibit the growth of or kill other disease-causing microbes.

2. **Discovery of Penicillin**: The first antibiotic discovered was Penicillin, which marked a significant breakthrough in medicine.

3. **Key Figures in Antibiotic Research**: The medicinal importance of antibiotics was reported by Alexander Fleming, who discovered Penicillin, and further researched on its effectiveness was conducted by Ernst Chain and Howard Florey.

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