Vaccine safety is always our top priority. In accordance with a recommendation from the CDC and FDA, the City of Chicago has paused administering the Johnson & Johnson (J&J) vaccine while federal health officials complete a review. We are working closely with our partners at the federal and local level to determine how this impacts the city’s vaccine operations. Federal agencies are investigating very rare reports of a severe type of blood clot with low platelets that occurred in 6 individuals after receiving the J&J vaccine, among nearly 7 million people who have received J&J across the U.S. We are not aware of any local cases. While incredibly rare, anyone who has received the J&J vaccine who develops severe headache, abdominal pain, leg pain, or shortness of breath within three weeks after their vaccination should contact their health provider. This recommendation does not affect Pfizer or Moderna vaccine in any way. Vaccination remains critical to protect Chicagoans from COVID-19 and we will share more information as we receive it.