The testing right now is to see if it works and although there has been promising results nothing iS really doing the job now after they make a vaccine that works they still have to do long term testing to see the after effects after all what good is a vaccine if it does more harm then good in the long run? Then it's going to take a lot of money possibly 100s of billions of dollars and time to make and deploye it to billions of people it's not going to be a easy task at all.