A new study funded by Pfizer found the company’s COVID-19 vaccine did not perform well in children under 5.
Children aged 6 months to 4 years are supposed to receive three shots of the Pfizer-BioNTech vaccine. The number was increased from two when early testing showed little effectiveness.
Three doses of the Pfizer vaccine provided little protection against emergency room visits, urgent care encounters, or outpatient visits, according to the new study.
Pfizer-funded researchers analyzed records from Kaiser Permanente Southern California. They included patients who tested for COVID-19 at an emergency department, urgent care, or outpatient setting, along with being diagnosed with acute respiratory infection. The date range was July 23, 2022, through May 19, 2023.