it's all a conspiracy to make us enjoy the outdoors.

1. invisible aliens want to stealthily stupidify the human race so they brainwashed the government to make up an excuse to close all the schools and plans are underway for Dark Ages ver. 2
2. 

I’ve got one and it’s one that comes straight from China: the US military unleashed it to make the world fear China. 

Russia intentionally released it to interfere with Olympics as a retaliation to ban. Because nobody bans mother Russia. Mother russia banned everyone else from Olympics.

Domino effect assassination attempt on all old world leaders??

China made it to kill off the North Koreans so they could stealthily occupy North Korea but the superior North Korean intellect discovered it and countered China with a slightly modified version so they could stealthily take over China, they however forgot that China hasn't closed their borders to every single nation and that it would create a pandemic where everyone will notice it so they can no longer be stealthy

oh and that China has a population many millions times larger than North Korea

3. the most elaborate worldwide advertising scheme fabricated by Ndemic Creations to promote Plague Inc. Ndemic released the virus in Wuhan, but China found out and that's why they banned the game

wait i think i'm onto something here

Peta formulated it as a revenge to the wet markets brutality in Wuhan, but it got out of control.