Update: The Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) halted the use of the Johnson & Johnson COVID-19 vaccine at federally administered sites on April 13, after six cases of blood clots found in women who used the vaccine.
One of the emergency use requirements for each of the three approved COVID-19 vaccines was that healthcare providers must report certain symptoms after vaccination using the federally run Vaccine Adverse Event Reporting System (VAERS).
The system, set up in 1990, is intended to monitor side effects following vaccinations of any type. Individual VAERS case data through February 26 — when the number of total COVID-19 doses administered was about 70.5 million — shows just over 25,000 reports of adverse events following vaccinations.
