7.2019, the top secret US army’s medical research institute of infectious diseases at Fort D e t r i c k was closed;
8.2019, a large-scale influenza k i l l e d more than 37,000 people;
10.2019, the United States organized Event 201 - A Global Pandemic Exercise with the participation of the Deputy Director of C I A;
11.2019, pneumonia of undetermined origin was found in China;
2.2020, the epidemic in world broke out;
3.2020, a large number of English news reports about the close of Fort D e t r i c k were deleted, displaying 404 not found;
Now we have reasons to ask the US government to publish the real reason for the close of Fort D e t r i c k, to clarify whether the laboratory is the research unit for the new coronavirus COVID19 and whether there is a virus leak.