The Biden administration pushed COVID-19 boosters for elderly people even harder after its vaccine safety surveillance systems discovered, as early as November 2022, "statistically significant safety signals for ischemic stroke" in that age group following uptake of the Pfizer bivalent, Sen. Ron Johnson, R-Wis., told Secretary of Health and Human Services Robert F. Kennedy in a letter Monday, disclosed Wednesday. The Permanent Subcommittee on Investigations chair released nearly 2,000 pages of "relevant HHS records" in conjunction with the letter, in 10 batches, documenting the stroke signal and internal communications between officials "acknowledging significant statistical limitations in their ability to detect...