Six female recipients of the vaccine, between the ages of 18 and 48, developed cerebral venous sinus thrombosis (CVST), a type of clot that prevents blood from draining out of the brain. The CDC met with its Advisory Committee on Immunization Practices (ACIP) on Wednesday, April 14, to review the six rare cases and come to an official recommendation. They have not yet lifted their pause.
This pause, while a demonstration of caution and prioritization of safety from the FDA and CDC, has understandably raised some concern among those who’ve received the shot or were slated to. On social media, many have taken to hypothesizing about whether this pause will breed mistrust and hesitancy toward the vaccines—which has been a top concern among health officials since the beginning of the vaccine rollout.
But doctors are clearing the air, offering explanations about why this pause is important and necessary, and what the next steps may look like for Johnson & Johnson. Here are a few of their most helpful points.
A Pause Helps Providers React Appropriately
The FDA and CDC messaging is crucial for informing providers about CVST and what to look out for in patients, according to Craig Spencer, MD, MPH, a New York City ER doctor and director of Global Health in Emergency Medicine at Columbia Medicine. He describes how the news helped inform his own diagnosis of a young female patient he saw this week who recently received the Johnson & Johnson vaccine.
Doctors Have Guidance to Get Side Effect Treatment Right
Céline Gounder, MD, ScM, FIDSA, an infectious diseases specialist at NYC Health and a clinical assistant professor of medicine at NYU Grossman School of Medicine, points out that a typical blood thinner given by providers for clotting, heparin, can actually do more harm than good for CVST. Arming doctors with that knowledge may help keep any additional cases that develop from going down a dangerous path.
We’re Learning More About Risk
While the cases of this severe blood clot are extremely rare (less than 0.0001% of cases), the risk may not be equal for all groups of people, Megan Ranney, MD, MPH, an emergency physician and director of the Brown-Lifespan Center for Digital Health, explains. Studies have shown that the risk of CVST may be higher in younger women when compared to the rest of the population, although as of right now, there’s no information to show that experiencing CVST from a vaccine is linked to any sort of trait or a certain age range.
Dismissing Risk Fuels Mistrust
Ashish K. Jha, MD, MPH, physician and dean of the Brown University School of Public Health, argues that the pause may actually increase the general public’s trust in the vaccines. An abundance of caution, he says, will show that the FDA and CDC are taking vaccine safety seriously, and are willing to back up this sentiment with actions.
Experts Can Re-think Distribution Methods
Many doctors including, Jeremy Faust, MD, MS, an emergency physician at Brigham and Women’s Hospital and an instructor at Harvard Medical School, are calling for the CDC and FDA to lift their pause, with some age restrictions in place. Faust points out that it’s likely safe to resume vaccination for everyone over 50 and men of all ages.
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