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CDC, FDA lift pause on using J&J's coronavirus vaccine, add safety warning

The US Centers for Disease Control and Prevention and Food and Drug Administration lifted their recommended pause on use of Johnson & Johnson's coronavirus v...

Posted: Apr 23, 2021 2:04 PM
Updated: Apr 23, 2021 7:30 PM

The US Centers for Disease Control and Prevention and Food and Drug Administration lifted their recommended pause on use of Johnson & Johnson's coronavirus vaccine Friday and said the label will be updated to warn of blood clot risks.

Vaccinations could resume as soon as Saturday, the FDA said.

The agencies acted quickly after a vote by the CDC's Advisory Committee for Immunization Practices recommended lifting the pause.

'We have concluded that the known and potential benefits of the Janssen COVID-19 vaccine outweigh its known and potential risks in individuals 18 years of age and older,' acting FDA Commissioner Dr. Janet Woodcock said in a statement.

'We are confident that this vaccine continues to meet our standards for safety, effectiveness and quality. We recommend people with questions about which vaccine is right for them have those discussions with their health care provider.'

'I support the ACIP's recommendation that the Johnson and Johnson COVID-19 vaccine be used for persons 18 years of age or older in the United States population under the FDA emergency use authorization, and I have signed this recommendation,' CDC Director Dr. Rochelle Walensky said Friday.

'With these actions, the administration of Johnson and Johnson's COVID-19 vaccine can resume immediately.'

ACIP members worried that taking one of only three vaccines out of the mix available to Americans would slow efforts to immunize the population against a virus that has killed more than half a million people in the United States. Plus, they agreed that having a one-shot vaccine that doesn't need to be stored in freezers was valuable and would be preferred by many people who do not want to come back for a second dose, or who would struggle to make two vaccination appointments.

Walensky said a CDC risk-benefit analysis made the decision an easy one. The agency searched and found 15 likely cases of a rare blood clotting condition called thrombosis with thrombocytopenia syndrome (TTS), with three deaths among people who got the vaccine.

Blood clots versus Covid deaths

'Based on an in-depth analysis, there is likely an association but the risk is very low. What we are seeing is the overall rate of events was 1.9 cases per million people. In women 18 to 49 years, there was an approximate 7 cases per million,' Walensky told a news conference. Among women over 50, the rate is 0.9 cases per million. No cases were seen among men.

Walensky noted that Covid-19 is deadly. It's killed more than half a million Americans.The analysis looked at what would happen with and without the vaccine available across the country.

'For every 1 million doses of this vaccine, the J&J vaccine could prevent over 650 hospitalizations and 12 deaths among women aged 18 to 49, and this vaccine could prevent over 4,700 hospitalizations and nearly 600 deaths among women over 50,' Walensky said. 'These are significant numbers and show the important impact of this vaccine in our country.' she added.

The ACIP agreed, voting 10 in favor of lifting the pause, four opposed, with one abstention.

'This is a very rare event -- a very rare event,' Dr. Jose Romero, who chairs ACIP and who is also the top health official for Arkansas, told the meeting.

The panel debated various possibilities, including recommending restricted use of the vaccine, but finally voted simply on the option to recommend use of the vaccine as it had been before -- in all adults over the age of 18.

The FDA updated fact sheets accompanying the vaccine, indicating that women under the age of 50 should be aware of the risk of a rare blood clotting syndrome associated with the vaccine. The FDA's Dr. Peter Marks said new copies of the fact sheets can be printed out to give people at vaccination sites immediately.

Earlier, Johnson & Johnson officials said they had agreed to new language for the label that acknowledges the risk of TTS.

Some members of the ACIP committee were unhappy with the decision and the vote was not unanimous. Four members voted against the recommendation.

'I did not object to the recommendation; I objected to the absence of any kind of guidance from us,' said Dr. Sarah Long, a professor of pediatrics at Drexel University College of Medicine.

Of the 15 US cases of rare blood clots associated with the J&J vaccine, 13 were in women under the age of 50. ACIP discussed the need to give women in this age group an extra warning, but in the end left it out of the vote.

'This is an age group that is most at risk, that is getting this vaccine predominantly to save other people's lives and morbidity, not their own,' Long said. 'And I think we have a responsibility to be certain that they know this, and if they choose to be vaccinated with this anyhow, we want to respect that choice.'

But other ACIP members said the country needs the vaccine.

'I think the risks and benefits of this vaccine clearly show that we're preventing tremendous disease, and that we need to be cognizant of that fact,' said Dr. Jason Goldman, a physician in private practice in Coral Springs, Florida, who is not a voting member of the committee.

'Many of my patients are expressing a preference for the vaccine for a single dose because they cannot take off from work,' added Goldman. 'I am gravely concerned that if we do not continue with the vaccine, it is going to dramatically reduce the ability of my patients to get vaccinated.'

Next week the CDC has scheduled a telephone briefing for doctors and other clinicians to explain the changed recommendations and lay out the symptoms of and treatments for TTS. Most patients with TTS develop a severe headache days to weeks after getting the vaccine, doctors told ACIP.

There will also be a Morbidity and Mortality Weekly Report -- the CDC's main publication for disseminating health news -- to share the information.

American Medical Association president Dr. Susan Bailey said her organization would help get the word out about risks.

'The AMA will continue to work with the FDA and the Centers for Disease Control and Prevention (CDC) to ensure physicians and patients are aware of the rare, but increased risk of thrombosis with thrombocytopenia syndrome (TTS) in women under the age of 50, as well as the appropriate treatment, so they can act quickly,' Bailey said.

Blood clots are common, but TTS is especially rare. It involves an unusual immune reaction that targets platelets, which are cells involved in blood clotting. Antibodies latch onto the platelets, pulling them out of circulation and causing them to clump together. The result is blood clots along with a low platelet count.

Treatment includes using blood thinners, but not heparin, as well as an immune product called IVIG to regulate the antibody response.

Risks and benefits

The CDC's Dr. Sara Oliver presented the results of several models laying out what might happen if the vaccine is used again, including with restrictions on use in certain groups. The CDC took into consideration deaths from coronavirus and the likelihood that people would get vaccinated more quickly if the Janssen vaccine was in the mix.

'When resuming vaccination among all persons at least 18 years, we expect 26 to 45 TTS cases depending on vaccine uptake,' she said. But 600 to 1,400 deaths from Covid-19 would be prevented, and as many as 3,500 ICU admissions would be prevented.

If the vaccine were restricted to people over the age of 50, three TTS cases could be expected, but between 40 and 250 Covid-19 deaths would be prevented, and as many as 1,000 people would not need treatment in the ICU.

American Society of Hematology president Dr. Martin Tallman, a specialist at Memorial Sloan Kettering Cancer Center, said Covid-19 carries a much higher risk of blood clots than any vaccine.

'In fact, COVID-19 infection carries a much higher risk of blood clots —147,000 in 1 million hospitalized COVID-19 patients experience clots, compared to roughly two in 1 million individuals who received the Johnson & Johnson vaccine,' Tallman said in a statement.

Moderna's and Pfizer's vaccines have not been linked with blood clots at all, the ACIP panel heard.

The CDC did not consider a gender-based restriction, Oliver said, because it would be too hard to explain -- even though the risk of blood clots appears to be very low among men.

Dr. Paul Offit, who is a vaccine adviser to the FDA and a pediatrician at Children's Hospital of Philadelphia, said he thought the CDC did a good job of laying out the risks of the vaccine versus the risks of Covid-19.

'This was the CDC at its finest,' Offit told CNN's Wolf Blitzer.

Officials in Georgia and Colorado said they would resume administering the J&J vaccine immediately.

Oregon Coronavirus Cases

Data is updated nightly.

Cases: 309841

Reported Deaths: 3569
CountyCasesDeaths
Multnomah50840642
Washington34683272
Marion32181388
Clackamas26315270
Lane23632246
Jackson20753255
Deschutes16401100
Umatilla12552125
Douglas10599185
Linn1030285
Josephine8536163
Yamhill737299
Klamath637891
Polk617770
Malheur475867
Benton454027
Coos406469
Columbia320237
Jefferson310446
Lincoln272829
Union266036
Wasco236739
Crook212137
Clatsop210225
Tillamook179623
Baker171920
Morrow166621
Curry166317
Hood River161635
Harney77115
Grant7538
Lake6608
Wallowa50111
Gilliam1364
Sherman1283
Wheeler651
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California Coronavirus Cases

Data is updated nightly.

Cases: 4636268

Reported Deaths: 67966
CountyCasesDeaths
Los Angeles144412725849
Riverside3575584802
San Diego3492274006
San Bernardino3468955501
Orange3135295354
Sacramento1498662070
Santa Clara1403871841
Fresno1356471889
Kern1343971515
Alameda1160681320
Ventura976231120
San Joaquin971621615
Contra Costa95595924
Stanislaus800341229
Tulare72812896
San Mateo52172607
San Francisco51808605
Monterey49445565
Solano44061312
Santa Barbara43065500
Sonoma39376376
Merced39279535
Placer36390364
Imperial34235755
Kings30038285
San Luis Obispo28273313
Madera21672258
Butte21205230
Shasta20647276
Santa Cruz20134211
Yolo19118239
Marin17080242
El Dorado15964127
Sutter13055153
Napa1224695
Yuba923461
Nevada845685
Humboldt826284
Tehama821184
San Benito708567
Mendocino681971
Lassen636827
Tuolumne612593
Lake601087
Amador489759
Glenn396430
Siskiyou388841
Calaveras339366
Del Norte334234
Colusa290718
Inyo166239
Mono14935
Plumas12336
Mariposa96712
Trinity71910
Modoc6278
Sierra1980
Unassigned1180
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