Deliberate - I think.
They infected the military members on competition teams that were in the area. The competition was partially shut down. Many athletes got sick.
Covid?
RE: They infected the military members on competition teams that were in the area.
That was the CCP version of the origin of the Virus. They accused the USA of deliberately bringing infected competitors to the Wuhan Military Games in October 2019.
The CCP Foreign Ministry Spokesman Zhao Li Jian was the most notorious spreader of this theory, especially in Social Media.