Instructions
Read the attached articles, and write/submit an introductory paragraph using the prompt below:

The coronavirus has killed hundreds of thousands of people and put millions out of work. As the number of victims rises, scientists all over the world are working to develop a vaccine to protect people against the virus. Write an informative essay that explains the importance of volunteers to scientists during the testing of vaccines. Include specific details and examples.
If you do it for the point only I will report