Rating: "True."
By the end of the federal fiscal year in September 2019, at least three immigrant children had died of the flu in federal custody, including a sixteen-year-old boy whose May 2019 death in Border Patrol custody was caught on video, which was obtained months later by investigative journalists.
In November 2019, the Los Angeles Times reported that border agencies refused donations of flu shot vaccines as well as the services of doctors to administer them.
The full article is available here