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Fort Detrick was closed 2019:

The link you posted states that bioweapons research stopped in 1969 (including at Ft. Detrick) as the grandparent stated.

It stopped being the 'central' bio research lab in US but still continued such research thereafter.

The only bio research done after 1969 anyhwere in the US was to find cures, treatments, and the like which is in the link you provided.