Concept:
The World Health Organization (WHO) created the role of Chief Scientist to strengthen scientific research and evidence-based decision-making.
• The post was established in 2019.
• Dr. Soumya Swaminathan was appointed as the first Chief Scientist.
• She served until 2022.
Step 1: Recall the first Chief Scientist of WHO.
The first person appointed to this role was:
Dr. Soumya Swaminathan
She played an important role during:
COVID-19 pandemic response and global health research.
Hence, the correct answer is:
\[
\boxed{\text{Dr. Soumya Swaminathan}}
\]