I’m sorry but your plot is too tame to make into a movie. If you are looking at conspiracy angle, nothing can be wilder than the ‘Anglo Saxon Mission’ by Bill Ryan of Project Avalon. This video was uploaded to YouTube in 2010 (ten years ago), and it is chilling to hear now of the predicted “China will catch a cold” (15:05).Wow! Think of the profits to be made here. Would make a great conspiracy film. Company develops Covid-19 in laboratory, releases it, waits for a spread and then makes zillions from their new wonder drug But then someone leaks the information about the conspiracy .... FIND THE LEAKER AND ELIMINATE!
By the way, fodder for conspiracy theorists, the 2019 World Military Games was held in Wuhan from 18-27 October 2019, just before the first infection.