Democracies Are Vaccinated Every 2nd Year, It's Called Election

Your vote is the vaccine!
Democratic countries takes a shoot against corruption every 2nd year. A local and regional one and a national one in 4 year intervalls. 

That prevents diseases to do too much harm before they are beaten out of the system. We could inject a shoot at any time, but as long as the system is robust to handle whatever it may face, and comfortable to live with it untill the next vaccine, there is no hurry.

It's a safety system, if you will, who prevents billions of people to be lead by one person with an equally huge ego.

That's why Jingping and Putin first and foremost export their vaccines, they don't want the people at home to get any crazy ideas.