Even though in some countries - like mine, Portugal - the recommendation from WHO - test, test, test - is not possibel (lack of supplies due to non-preparedness), the amount of data worldwide is enormous. Only in Portugal, in March, 40,000 tests were done.
The amount of data at the end of this crisis will no doubt be analysed by AI and Big Data algorithms, and hopefully lessons will be learned for the future. Recently researchers from Imperial College have made some analysis for 202 countries. For Portugal, without efficient quarantine methods, they estimate 70,000 infected and nearly 4,000 dead.