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CDC vaccine advisers put off decision on Johnson & Johnson Covid-19 vaccine

Vaccine advisers to the US Centers for Disease Control and Prevention put off making any decision on Wednesday about the recommendations for Johnson & Johnso...

Posted: Apr 14, 2021 7:29 PM
Updated: Apr 15, 2021 9:38 AM

Vaccine advisers to the US Centers for Disease Control and Prevention put off making any decision on Wednesday about the recommendations for Johnson & Johnson's coronavirus vaccine, saying they need more information about a rare type of blood clot.

Members of the Advisory Committee on Immunization Practices said they did not have enough information to make changes in their recommendations, or even to suggest extending a pause in administering the vaccine.

The CDC and the US Food and Drug Administration recommended that the United States pause the use of the Johnson & Johnson vaccine on Tuesday after six reported cases of a rare but dangerous and hard to-treat form of blood clot among people who had recently been vaccinated.

On Wednesday, the CDC advisers also heard about a possible seventh case, and details of one case in a volunteer during trials of the vaccine -- a case that J&J initially said was not linked to the vaccine.

ACIP staff said they would quickly look for a time within the next week to 10 days that the committee could meet again so the vaccine is not unnecessarily delayed if they decide it's safe to continue giving it.

'We will find a time to reconvene,' ACIP executive secretary Dr. Amanda Cohn told the meeting. 'We will try to identify what that date is by Friday of this week so that people have a little bit more time to get it on the calendars.'

Federal regulators are keen to get more information about the blood clots, called cerebral venous sinus thromboses (CVST), that are found in combination with a shortage of blood-clotting cells called platelets. The combination makes the condition extra dangerous, because using the blood thinners typically employed to treat blood clots can cause hemorrhaging in these patients.

At least four of the six cases were treated with the blood thinner heparin when they first developed symptoms, Dr. Aran Maree, chief medical officer for pharmaceuticals at J&J's Janssen vaccine arm, told the meeting.

He gave details of what's known about the cases, which include: a 45-year-old woman who died; a 38-year-old woman who has not recovered; an 18-year-old woman who has not recovered; a 48-year-old woman who has not recovered; a 26-year-old woman who has recovered and a 28-year-old woman whose status is unknown.

They also include a possible seventh case -- a 59-year-old woman who has not yet recovered and whose blood clots might not fit the same profile as the others.

Maree said the company still feels the vaccine is safe enough to use.

'I'd like to reiterate that based on the current data, Janssen believes the overall benefit-risk profile for our vaccine is positive across the population for which it's authorized,' Maree told the meeting.

'We strongly support ensuring awareness of the signs and symptoms of this very rare event, as well as recommendations to ensure the correct diagnosis, treatment and reporting by health care professionals.'

ACIP staff said the committee could consider recommending changes in who gets the vaccine -- for instance, only men, as most cases of the clots are among women, or only people over 50, as most of the cases were in people under 50.

But members said they may not know enough yet to make such recommendations.

'I do not want to vote on this issue today. I do not want to vote not to recommend the vaccine -- I think that is not really something I necessarily believe,' Dr. Beth Bell, a clinical professor at the University of Washington in Seattle, told the meeting.

'I just don't feel there's enough information to make an evidence-based decision. We won't have all the information, but I think there are some things that we can gather relatively quickly, which all have to do with the benefit/risk balance,' Bell said.

'We do need to better understand the risk, which we know is going to be very rare, very low, but we really don't know exactly how low and how to correctly characterize it,' Bell added.

'I think we need to not vote and gather the necessary information so we can make an evidence-based decision.'

Bell, who chairs the ACIP's working group, said earlier it was also unclear if the blood clots seen in people who got the Janssen vaccine were the same as those seen in people in the UK and Europe who got the AstraZeneca vaccine, which is not yet authorized in the US.

Both vaccines use adenoviruses, a type of common cold virus, to carry genetic material from the coronavirus into the body to elicit immunity. One theory is that these adenoviruses somehow prompt an immune response that causes the low platelet count and the blood clots.

'The extent to which the cases seen after each of these adenoviral vector vaccines represent exactly the same syndrome is not entirely clear at this time,' Bell told the meeting.

The group has a scheduled meeting in three weeks -- on May 5 -- or could schedule another emergency meeting.

But Dr. Nirav Shah, director of Maine's Center for Disease Control and Prevention and representative for the Association of State and Territorial Health Officials, said waiting was equally bad.

'We are in a situation where not making a decision is tantamount to making a decision,' Shah said, noting that people who could benefit from getting a one-dose vaccine would go unvaccinated as a result of further delay.

Dr. Camille Kotton of Massachusetts General Hospital and Harvard Medical School, said the country needs the one-shot vaccine.

'Putting this vaccine on pause for those of us that are frontline health care workers has really been devastating,' Kotton told the meeting.

'I agree in general that we don't have data to make a decision at this time. But we were planning on using this vaccine in the state of Massachusetts for people who are homebound and otherwise not able to get a vaccine.

'We were planning on using it for our vulnerable in-patient population often with many comorbidities and at high risk for disease but who haven't been able to get vaccinated otherwise. And then it certainly was going to be used in what may be otherwise underserved populations or populations that aren't able to get mRNA vaccines,' Kotton added.

The mRNA vaccines made by Moderna and Pfizer/BioNTech require special refrigeration and are given in two-dose regimens.

'So I definitely want us to be cautious and very careful with our decision making, but I also just want to emphasize that this one-and-done vaccine that didn't require the cold chain that the mRNA vaccines do, it's a significant loss,' Kotton said.

Dr. Paul Offit, a member of the US Food and Drug Administration's vaccine advisory committee, called it 'an unfortunate non-decision.'

'One thing they could have said was, 'Just explain to people that there is this very rare, but very real side effect, remembering that of every million people that get Covid, 1,850 will die,'' said Offit, director of the Vaccine Education Center at Children's Hospital of Philadelphia. 'There are no risk-free choices -- just choices to take different risks.'

Earlier, CDC Director Dr. Rochelle Walensky said it was not clear her agency had heard about every blood clot that might be linked to the vaccine. 'Right now, we believe these events to be extremely rare, but we are also not yet certain we have heard about all possible cases, as this syndrome may not be easily recognized as one associated with the vaccine,' she told a media briefing.

She said while people need to be aware of the potential symptoms, the vaccine surveillance system is working. 'Jointly, CDC and FDA were able to identify these rare events and act quickly to alert healthcare providers and the public. This demonstrates that the safety systems we have in place are working,' she said.

Symptoms people should be on the lookout for after getting the Janssen vaccine include severe headache, abdominal or leg pain or shortnessof breath, Walensky said.

Indiana Coronavirus Cases

Data is updated nightly.

Cases: 751242

Reported Deaths: 13795
CountyCasesDeaths
Marion1032931788
Lake556911009
Allen41692692
St. Joseph36990565
Hamilton36588417
Elkhart29398461
Tippecanoe22901226
Vanderburgh22556400
Porter19356325
Johnson18471389
Hendricks17682317
Clark13226195
Madison13149344
Vigo12614253
LaPorte12419221
Monroe12207176
Delaware10966198
Howard10321225
Kosciusko9630121
Hancock8576146
Bartholomew8169157
Warrick7860156
Floyd7811180
Grant7242179
Wayne7162201
Boone6966103
Morgan6761141
Dubois6218118
Marshall6209116
Cass6016110
Henry5900110
Dearborn589878
Noble581488
Jackson509076
Shelby501496
Lawrence4742122
Gibson444894
Clinton442355
Harrison441875
DeKalb439885
Montgomery438090
Whitley406543
Huntington402681
Steuben400159
Miami395269
Jasper388054
Knox375991
Putnam372960
Wabash361983
Ripley347170
Adams345555
Jefferson335886
White331953
Daviess3033100
Wells295281
Decatur289992
Greene286885
Fayette284864
Posey273835
LaGrange273072
Scott270156
Clay267148
Washington246036
Randolph244783
Jennings235349
Spencer234531
Starke228058
Fountain220948
Sullivan214643
Owen211858
Fulton202942
Jay200932
Carroll193620
Orange188255
Perry187237
Rush175926
Vermillion174844
Franklin170335
Tipton166246
Parke149416
Pike138234
Blackford136232
Pulaski120647
Newton113936
Brown104243
Crawford102516
Benton101714
Martin91715
Warren84015
Switzerland8148
Union72810
Ohio57911
Unassigned0420

Ohio Coronavirus Cases

Data is updated nightly.

Cases: 1108736

Reported Deaths: 20166
CountyCasesDeaths
Franklin1287201467
Cuyahoga1157922211
Hamilton813971250
Montgomery525481043
Summit484271001
Lucas43353820
Butler39013606
Stark33332929
Lorain25672505
Warren24591303
Mahoning22370603
Lake21207388
Clermont20117253
Delaware18852136
Licking16662222
Fairfield16574204
Trumbull16548482
Medina15610271
Greene15281248
Clark14237306
Wood13292200
Portage13251215
Allen11913239
Richland11605211
Miami10849225
Wayne9141223
Columbiana9032230
Muskingum8906135
Pickaway8663122
Tuscarawas8649250
Marion8642138
Erie8056165
Ashtabula7160179
Hancock6998132
Ross6944161
Geauga6838151
Scioto6534106
Belmont6157174
Union584549
Lawrence5731102
Jefferson5678158
Huron5546122
Sandusky5442126
Darke5420129
Seneca5348128
Washington5319109
Athens523960
Auglaize502187
Mercer487385
Shelby476895
Knox4571112
Madison444266
Ashland435797
Putnam4336103
Defiance432399
Fulton432074
Crawford4037110
Brown402461
Logan387677
Preble3855105
Clinton379166
Ottawa373681
Highland359665
Williams348278
Champaign344759
Guernsey324953
Jackson318254
Perry297350
Morrow291840
Fayette285450
Hardin275265
Henry273467
Holmes2701101
Coshocton269060
Van Wert247264
Adams243256
Pike242835
Gallia240650
Wyandot234556
Hocking220563
Carroll197348
Paulding176542
Meigs148440
Monroe136344
Noble136239
Harrison114138
Morgan109624
Vinton85517
Unassigned03
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