• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
HealthJohnson & Johnson

Despite incredibly low blood clot risks, the J&J vaccine pause was warranted, experts say

By
Marco Quiroz-Gutierrez
Marco Quiroz-Gutierrez
Down Arrow Button Icon
By
Marco Quiroz-Gutierrez
Marco Quiroz-Gutierrez
Down Arrow Button Icon
April 13, 2021, 4:22 PM ET

Two major U.S. health agencies recommended a pause in administering the Johnson & Johnson/Janssen Pharmaceuticals COVID-19 vaccine on Tuesday, and immediately faced questions over the low number of people who received the adverse reactions that led to the recommendation.

Six women in the U.S. between the ages of 18-48 experienced a rare and severe type of blood clotting after receiving the vaccine, according to the CDC. Nearly seven million people have been administered the J&J vaccine across the country as of April 12.

The Food and Drug Administration and Centers for Disease Control and Prevention reasoned that the pause was recommended “out of an abundance of caution.” At the same time, there have been more than 31.2 million cases of COVID-19 in the U.S., about 72,286 of which were reported on April 12, according to the New York Times.

One woman died and another is in critical condition, but the occurrences of serious blood clotting among people who have received the J&J vaccine is far below the risk of dying doing ordinary things such as driving a car, riding a bike, or even falling.

The U.S. National Safety Council puts your lifetime odds of dying in a motor-vehicle crash at one in 107, of dying while riding a bike at one in 3,825, and of dying from a fall at one in 106.

Dr. Patrick Jackson, an infectious disease expert at UVA Health, said it’s important to emphasize the low odds of having an adverse reaction to the Johnson & Johnson vaccine.

“Definitely your lifetime risk of being killed in a lightning strike far exceeds the risk of having this complication from the Johnson & Johnson vaccine,” Jackson told Fortune.

Dr. Jackson said, although the risks are low, he thinks the pause is appropriate while the possible link between the rare type of blood clots and the J&J vaccine is being investigated.

“On the other hand, I think that even if you saw, and were convinced that this is a true risk of receiving the Johnson & Johnson vaccine that the magnitude of risk might be so low that you would still recommend proceeding with vaccinating the general population,” Jackson told Fortune.

Some doctors point to the CDC and FDA pause as proof that regulatory oversight is working even as COVID-19 vaccines receive emergency use authorization, which fast-tracks a stringent approval process in emergency cases.

“That we were able to see our federal colleagues, recognize this, respond really quickly and make a call to action, I think, does provide reassurance to those who think that the system may not be as rigorous as it should be,” said Dr. David Wohl, a professor of medicine in the division of infectious diseases at the University of North Carolina School of Medicine in a Tuesday press conference.

Wohl said the decision for U.S. health officials to recommend a pause in administering the Johnson & Johnson vaccine could not have been an easy one.

“I’m sure there was heated debate about the balance of underreacting versus overreacting,” Wohl said.

Now that the decision has been made, there is no going back, for better or worse, said Wohl. Many states, including New York, Virginia, and North Carolina, among others, have already paused J&J vaccinations in line with the regulatory guidance.

Dr. Janet Woodcock, the acting Food and Drug Administration Commissioner, said in a Tuesday press conference that the pause recommendation is to help health care professionals make informed decisions about COVID-19 vaccines.

“In doing this, we feel we’re taking the route that will provide the most safety for the patient, by enabling health care professionals to recognize, to properly treat, and to properly report any of the events that might happen,” Woodcock said.

About the Author
By Marco Quiroz-Gutierrez
See full bioRight Arrow Button Icon

Latest in Health

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

Latest in Health

SuccessLongevity
CEO coach to the Fortune 500: The most powerful way to tackle 2026 is assuming you’ll live till 130
By Bill HoogterpJanuary 10, 2026
1 day ago
mens hair loss product
HealthDietary Supplements
The 4 Best Hair Loss Treatments for Men in 2026: Tested and Ranked
By Christina SnyderJanuary 9, 2026
2 days ago
dairy
HealthFood and drink
How the new protein and dairy diet flies in the face of modern guidelines, according to a nutritionist who served on the advisory board until 2024
By Cristina Palacios and The ConversationJanuary 9, 2026
2 days ago
HealthDietary Supplements
The 5 Best Hair Growth Products in 2026: Tested for Thickness and Health
By Christina SnyderJanuary 9, 2026
2 days ago
School drop-off
Successskills
The child prodigy who beats you at chess when you’re a kid is going to fade away in adulthood 90% of the time, study says
By Jake AngeloJanuary 9, 2026
2 days ago
Bill Gates attend a meeting of Bloomberg at the Plaza Hote on September 23, 2025 in New York City.
HealthBill Gates
Bill Gates warns the world is going ‘backwards’ and gives 5-year deadline before we enter a new Dark Age
By Eleanor PringleJanuary 9, 2026
2 days ago

Most Popular

placeholder alt text
Health
Bill Gates warns the world is going 'backwards' and gives 5-year deadline before we enter a new Dark Age
By Eleanor PringleJanuary 9, 2026
2 days ago
placeholder alt text
C-Suite
Silicon Valley billionaire flies coach out of solidarity: 'If I'm going to ask my employees to do it, I need to do it, too'
By Nick LichtenbergJanuary 9, 2026
2 days ago
placeholder alt text
Economy
As U.S. debt soars past $38 trillion, the flood of corporate bonds is a growing threat to the Treasury supply
By Jason MaJanuary 10, 2026
15 hours ago
placeholder alt text
Success
Diary of a CEO founder says he hired someone with 'zero' work experience because she 'thanked the security guard by name' before the interview
By Emma BurleighJanuary 8, 2026
3 days ago
placeholder alt text
Economy
Gen Z is rebelling against the economy with ‘disillusionomics,’ tackling near 6-figure debt by turning life into a giant list of income streams
By Jacqueline MunisJanuary 10, 2026
24 hours ago
placeholder alt text
Success
Bill Gates donated record $8 billion to Melinda French Gates' foundation as part of their divorce settlement
By Marco Quiroz-GutierrezJanuary 9, 2026
2 days ago

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.