Breast cancer cases in Americans under 45 years old dramatically increased after the introduction of mRNA COVID-19 vaccines, from approximately 26,000 in 2019-2022 to 297,000 in 2023, a nearly 1,000% ...
COVID-19 vaccines used in Brazil ... vaccine receive a second booster dose with an mRNA vaccine, the technology used in the Moderna and Pfizer shots, the researchers said. In clinical trials ...