Johnson & Johnson/Janssen COVID-19 Vaccine and Thrombosis with Thrombocytopenia Syndrome (TTS): Update for Clinicians

On April 13, 2021, the Centers for Disease Control and Prevention (CDC) issued a Health Alert Network (HAN) Health Advisory about the Johnson and Johnson COVID-19 vaccine. CDC and the U.S. Food and Drug Administration are reviewing data involving six U.S. cases of a rare type of blood clot in individuals after receiving the Johnson & Johnson COVID-19 vaccine that were reported to the Vaccine Adverse Event Reporting System (VAERS). One patient died. CDC recommends pausing the use of the J&J COVID-19 vaccine until the Advisory Committee on Immunization Practices is able to further review these cerebral venous sinus thrombosis cases in the context of thrombocytopenia and assess their potential significance. To read the full report, click here.

“This content and conclusions are those of the author and presenter and do not necessarily represent the views of, nor should any endorsements be inferred by, the Centers for Disease Control and Prevention. ”

The fully captioned video and edited transcript will be posted within the next few days.

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This COCA Call will be held on Friday, March 27, 2020


This COCA Call will present the latest evidence on thrombosis with thrombocytopenia syndrome (TTS) after administration of the Johnson & Johnson/Janssen COVID-19 vaccine. Speakers will discuss information on TTS and updated vaccine recommendations.


Sara Oliver, MD, MSPH
LCDR, U.S. Public Health Service
Co-lead, Advisory Committee for Immunization Practices COVID-19 Vaccines Work Group
COVID-19 Response
Centers for Disease Control and Prevention

Tom Shimabukuro, MD, MPH, MBA
CAPT, U.S. Public Health Service
Vaccine Safety Team Lead
COVID-19 Response
Centers for Disease Control and Prevention

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Due to the high demand we anticipate for this COCA Call, we encourage participants to consider viewing on Facebook. To see the call live, please click on COCA’s Facebook Page.

Call Details

Tuesday, April 27, 2021,
2:00 PM – 3:00 PM ET

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Passcode: 358595

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or +1 646 828 7666
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Webinar ID: 160 111 1927

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Page last reviewed: September 4, 2020