This is a moving, relevant story @popurri. It is not just about disease. It is about control and freedom. You do a great job of conveying fear, confusion, and tension. In the last paragraph there is a little confusion about who is falling and who is watching. It might be helpful to use names more there and personal pronouns less--just to clear up the confusion.
Great job with antagonist and worry. Thank you for sharing this story with us. We appreciate that you support other writers with your comments.
Thank you very much @theinkwell for your comments and suggestions for improvement. Yes, the main theme of the story is the use of fear as a measure to dominate people and it is terrible.
Greetings and happy day