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The U.S. is getting a third vaccine to prevent COVID-19, as the Food and Drug Administration on Saturday cleared a Johnson Johnson shot that works with just one dose instead of two.
Health experts are anxiously awaiting a one-and-done option to help speed vaccinations, as they race against a virus that already has killed more than 510,000 people in the U.S. and is mutating in increasingly worrisome ways.
The FDA said JJs vaccine offers strong protection against what matters most: serious illness, hospitalizations and death. One dose was 85 per cent protective against the most severe COVID-19 illness, in a massive study that spanned three continents -- protection that remained strong even in countries such as South Africa, where the variants of most concern are spreading.
This is really good news, Dr. Francis Collins, director of the National Institutes of Health, told The Associated Press Saturday. The most important thing we can do right now is to get as many shots in as many arms as we can.
JJ initially is providing a few million doses and shipments to states could begin as early as Monday. By the end of March, JJ has said it expects to deliver 20 million doses to the U.S., and 100 million by summer.
JJ also is seeking authorization for emergency use of its vaccine in Europe and from the World Health Organization. The company aims to produce about 1 billion doses globally by the end of the year. On Thursday, the island nation of Bahrain became the first to clear its use.
This is exciting news for all Americans, and an encouraging development in our efforts to bring an end to the crisis, President Joe Biden said in a statement. But I want to be clear: this fight is far from over, he added, encouraging people to stick with masks and other public health measures.
On Sunday, a U.S. advisory committee will meet to recommend how to prioritize use of the single-dose vaccine. And one big challenge is what the public wants to know: Which kind is better?
In this environment, whatever you can get -- get, said Dr. Arnold Monto of the University of Michigan, who chaired an FDA advisory panel that unanimously voted Friday that the vaccines benefits outweigh its risks.
Data is mixed on how well all the vaccines being used around the world work, prompting reports in some countries of people refusing one kind to wait for another.
In the U.S., the two-dose Pfizer and Moderna shots were 95 protective against symptomatic COVID-19. JJs one-dose effectiveness of 85 against severe COVID-19 dropped to 66 when moderate cases were rolled in. But theres no apples-to-apples comparison because of differences in when and where each company conducted its studies, with the Pfizer and Moderna research finished before concerning variants began spreading.
NIHs Collins said the evidence shows no reason to favour one vaccine over another.
What people I think are mostly interested in is, is it going to keep me from getting really sick? Collins said. Will it keep me from dying from this terrible disease? The good news is all of these say yes to that.
Also, JJ is testing two doses of its vaccine in a separate large study. Collins said if a second dose eventually is deemed better, people who got one earlier would be offered another.
The FDA cautioned that its too early to tell if someone who gets a mild or asymptomatic infection despite vaccination still could spread the virus.
There are clear advantages aside from the convenience of one shot. Local health officials are looking to use the JJ option in mobile vaccination clinics, homeless shelters, even with sailors who are spending months on fishing vessels -- communities where its hard to be sure someone will come back in three to four weeks for a second vaccination.
The JJ vaccine also is easier to handle, lasting three months in the refrigerator compared to the Pfizer and Moderna options, which must be frozen.
Were chomping at the bit to get more supply. Thats the limiting factor for us right now, said Dr. Matt Anderson of UW Health in Madison, Wisconsin, where staffers were readying electronic health records, staffing and vaccine storage in anticipation of offering JJ shots soon.
The FDA said studies detected no serious side effects. Like other COVID-19 vaccines, the main side effects of the JJ shot are pain at the injection site and flu-like fever, fatigue and headache.
An FDA fact sheet for vaccine recipients says there is a remote chance that people may experience a severe allergic reaction to the shot, a rare risk seen with the Pfizer and Moderna vaccines. Such reactions are treatable, and vaccine recipients are supposed to be briefly monitored after the injection.
The vaccine has been authorized for emergency use in adults 18 and older for now. But like other manufacturers, JJ is about to study how it works in teens before moving to younger children later in the year, and also plans a study in pregnant women.
All COVID-19 vaccines train the body to recognize the new coronavirus, usually by spotting the spikey protein that coats it. But theyre made in very different ways.
JJs shot uses a cold virus like a Trojan horse to carry the spike gene into the body, where cells make harmless copies of the protein to prime the immune system in case the real virus comes along. Its the same technology the company used in making an Ebola vaccine, and similar to COVID-19 vaccines made by AstraZeneca and Chinas CanSino Biologics.
The Pfizer and Moderna vaccines are made with a different technology, a piece of genetic code called messenger RNA that spurs cells to make those harmless spike copies.
The AstraZeneca vaccine, already used in Britain and numerous other countries, is finishing a large U.S. study needed for FDA clearance. Also in the pipeline, Novavax uses a still different technology, made with lab-grown copies of the spike protein, and has reported preliminary findings from a British study suggesting strong protection.
Still other countries are using inactivated vaccines, made with killed coronavirus by Chinese companies Sinovac and Sinopharm.
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REIGNING DAYS
GRAVITY
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DELAIN
THE QUEST AND THE CURSE
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HYRO THE HERO
BOUND FOR GLORY
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IN THIS MOMENT
THE IN BETWEEN
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SEETHER
CIGARETTES
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METALLICA
CHASING LIGHT
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ROMAN
GONE
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ONE BAD SON
SCREAM FOR ME
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BULLET FOR MY VALENTINE
PIECE OF ME
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PAPA ROACH
DYING TO BELIEVE
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