Global Statistics

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Updated on July 2, 2022 1:34 pm
All countries
Updated on July 2, 2022 1:34 pm
All countries
Updated on July 2, 2022 1:34 pm

Global Statistics

All countries
Updated on July 2, 2022 1:34 pm
All countries
Updated on July 2, 2022 1:34 pm
All countries
Updated on July 2, 2022 1:34 pm
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How Long After Covid Shot Is It Effective

Johnson & Johnson: 66%

How long after receiving a COVID-19 vaccine will it be effective?

J&J looked at protection against moderate to severe COVID-19 in trials, rather than symptomatic COVID-19, like Pfizer, Moderna, and AstraZeneca.

Protection kicked in at 14 days and was 66.1% effective at 28 days. The vaccine’s efficacy varied depending on the country it was used in it was 72% effective in the US but 64% and 68% effective in South Africa and Brazil, respectively. These countries both have coronavirus variants circulating that could partially evade antibodies.

Preclinical Trials Would Have Shown That They Didn’t Think There Was Enough Immunity After One Shot So They’ve Gone For Both Deborah Dunn

However, this early protection comes with some important caveats. First, the protection doesn’t kick in until at least day 12 until then, there was no difference between the two groups. Secondly, one dose is still significantly less protective than two. The latter is 95% effective at preventing the disease after a week.

But there is also another figure that has been circulating on the internet, and anecdotally, being fed to patients by certain doctors the suggestion that the first dose is around 90% effective. And this is where it gets a little more complicated.

The second estimate comes from the UK’s Vaccine Committee, the JCVI, who decided to calculate the efficacy of the vaccine differently. Instead of using all the data on the number of infections, including from days when the first dose hadn’t yet started to work, they only looked at days 15-21. Using this method, the efficacy of the vaccine jumps up to 89%, because it’s not being diluted by the relatively high number of infections before the vaccine begins to have an effect. Taking things even further and only looking at the first seven days after the second dose because the second dose might not have kicked in yet by then it’s 92%.

However, these calculations are controversial.

A vaccine developed to fight Ebola is the only one that uses the same technology as the Russian and Oxford-AstraZeneca Covid-19 jabs





Sputnik V

Can you skip the second vaccine dose?

What’s The Point Of Getting The Vaccine If I Still Can’t Do Anything

Though there are still some restrictions for vaccinated individuals, health experts urge Americans not to get discouraged.;

In the White House briefing Monday, Walensky said the guidelines could change as researchers learn more about COVID-19 as a disease, Americans get vaccinated;and “disease dynamics” change.;

“Its important;to note that this is initial guidance. “The science of COVID-19 is complex, and our understanding;of the virus continues to rapidly evolve,” Walensky;said. “The recommendations issued today are just a first step.”;

Even with safety measures still;in place, health experts said, Americans should get vaccinated to protect themselves from getting severely ill from COVID-19, which could lead to hospitalization or even death.;

According to clinical trials, the Pfizer-BioNTech vaccine was 100% effective against severe disease, and the J&J was 86% effective against severe disease in the USA.;

Getting vaccinated not only protects the individual and reduces strain on the health care system;but also helps;the country inch;closer to herd immunity. Experts said at least 65% of people,;and probably closer to 85%, must be vaccinated;to reach herd immunity.;;

Fauci said the country may achieve herd immunity by the fall, reaching a degree of normality by the end of 2021. Experts said the vaccine is only one part of that equation, and its important to continue wearing masks;and maintaining social distance until coronavirus circulation is low.;

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Number Of Doses/amounts Of Vaccine Per Dose

Both the Moderna and the Pfizer vaccines require two shots: a priming dose, followed by a booster shot. The interval between Moderna doses is 28 days; for the Pfizer vaccine, its 21 days.

Each dose of Pfizers contains 30 micrograms of vaccine. Moderna went with a much larger dose of vaccine, 100 micrograms. It means the company is using a little more than three times as much vaccine per person as Pfizer is. And yet, they arent getting better results. The governments vaccine development program, formerly called Operation Warp Speed, has asked Moderna to test if it could lower the dosage of its vaccine without eroding the vaccines protection.

The J&J vaccine is, as mentioned, a single-dose vaccine. The company is also testing a two-dose regimen, with the two shots given eight weeks apart. The results from that 30,000-person trial arent expected until sometime in May.

J&J is also testing what happens to antibody responses when a person who received the single dose regimen receives a small booster shot quite a bit later, Johan Van Hoof, managing director of Janssen Vaccines revealed recently. Van Hoof didnt say how long the interval is between the single shot and the small booster, nor did he say when J&J expects results from that study.

Latest Coronavirus News As Of 12pm On 29 September

How long after receiving a COVID

Over a third of people recovering from covid-19 have at least one long covid symptom between 3 and 6 months after infection, a study has found. The finding is based on health records from over 270,000 people in the US. The most common reported symptoms were anxiety or depression, in 15 per cent of participants whod had covid-19, followed by abnormal breathing and abdominal symptoms, both seen in 8 per cent, and fatigue, in 6 per cent.

These symptoms are not necessarily related to covid-19, but the study compared their prevalence in people recovering from covid-19 and in people whod had influenza, and found that, together, a set of 9 symptoms were 1.5 times more common after covid-19 than after the flu. Long covid symptoms were slightly more common in women than in men, and more common in those who had been hospitalised.

Attempts to estimate the prevalence of long covid have produced widely varying results, depending on how the condition is defined and measured. Recent figures from the UK Office for National Statistics suggested that 11.7 per cent of people who tested positive for covid-19 described themselves as experiencing long covid 12 weeks after infection, but only 3 per cent experienced symptoms continuously for at least 12 weeks.

Other coronavirus news

Pfizer and BioNTech have submitted trial data for their covid-19 vaccine in 5-to-11-year-olds to the US medicines regulator, and say they will make a formal request for emergency authorisation in coming weeks.

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When Should Eligible People Get Their Third Dose

For those eligible under the recent rulings from the FDA and CDC, the extra dose would be given once they are at least six months past their last Pfizer shot.

The FDA determined that transplant recipients and others with a similar level of compromised immunity can receive a third dose of the vaccines from Pfizer and Moderna at least 28 days after getting their second shot.

Walgreens announced last month that its pharmacies will offer additional COVID-19 vaccine doses to eligible patients with compromised immune systems.

Walgreens has begun offering same-day appointments available to such patients on a walk-in basis at select stores, the company said. Patients will bring their vaccination card or record to the appointments to prove eligibility.

Under the recent FDA authorization for seniors and high-risk populations, eligible vaccinated Americans would be able to receive their third dose six months after receiving their second Pfizer shot.;

Q What Information Is Available About Myocarditis And Pericarditis Following Vaccination With Pfizer

A. Post-authorization safety surveillance data pertaining to myocarditis and pericarditis demonstrate increased risks of myocarditis and pericarditis, particularly within 7 days following the second dose of the Pfizer-BioNTech COVID-19 Vaccine, with the risk being higher in males under 40 years of age than in females or older males. The observed risk is highest in males 12 through 17 years of age.

The Fact Sheet for Healthcare Providers Administering Vaccine for the Pfizer-BioNTech COVID-19 Vaccine includes a warning about the risk of myocarditis and pericarditis, and the Vaccine Information Fact Sheet for Recipients and Caregivers include information about myocarditis and pericarditis. The Vaccine Information Fact Sheet for Recipients and Caregivers notes that vaccine recipients should seek medical attention right away if they experience any of the following symptoms after vaccination:

  • Chest pain

A: Yes. Providers administering Pfizer-BioNTech COVID-19 Vaccine must report to the Vaccine Adverse Event Reporting System and to Pfizer the following information associated with the vaccine of which they become aware:;

  • Vaccine administration errors whether or not associated with an adverse event
  • Serious adverse events
  • Cases of Multisystem Inflammatory Syndrome
  • Cases of COVID-19 that result in hospitalization or death

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What Are The Chances Of Being Reinfected With Covid

If youve had COVID-19, whats the likelihood that you could contract the virus a second time if you dont get vaccinated against it?;

Were not seeing very many secondary infections, says Dr. Englund. But she says its also relatively early on in the pandemic. Scientists are still learning about coronavirus, and if youve had the virus and arent vaccinated, its unclear how long it will take before you can be reinfected with COVID-19.;

Its much better to get yourself vaccinated. Then you dont have to worry moving forward until we learn more about whether we need booster shots or not, Dr. Englund clarifies.

How Will A Vaccine Prevent Covid

How long does COVID-19 vaccine immunity last?

The coronavirus that causes COVID-19 has spikes of protein on each viral particle. These spikes help the viruses attach to cells and cause disease. Some of the coronavirus vaccines in development are designed to help the body recognize these spike proteins and fight the coronavirus that has them.

An effective vaccine will protect someone who receives it by lowering the chance of getting COVID-19 if the person encounters the coronavirus. More important is whether the vaccine prevents serious illness, hospitalization and death.; At this time, all three vaccines are highly efficacious at preventing serious illness, hospitalization and death from COVID-19.; Widespread vaccination means the coronavirus will not infect as many people. This will limit spread through communities and will restrict the viruss opportunity to continue to mutate into new variants.

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How Long Are Covid

  • John LetzingDigital Editor, Strategic Intelligence, World Economic Forum
    • Experts dont know yet how long COVID-19 vaccines will be effective.
    • Studies of two of the most prominent COVID-19 vaccines suggest they remain effective for at least six months.
    • The CEO of one vaccine maker said immunity may start to fade within a year.

    One of the most pressing questions about COVID-19 vaccines is how long they can provide protection.

    It may be decades, or a matter of months the data necessary to figure that out is accumulating every day. Pfizers CEO said this week that after a full regimen of doses immunity will probably start to fade within a year. According to the WHO, its simply too early to know the exact duration of COVID-19 vaccines because both the disease and the science deployed against it arent yet fully understood.

    Some early evidence is promising. The viruses that caused MERS and SARS are closely related to the virus behind COVID-19, and acquired immunity to both of those diseases has proved relatively durable.

    In terms of COVID-19-specific research, Pfizer and BioNTech said earlier this month that their vaccine remains effective for at least half a year after the second dose, and a study of Modernas version reflected a similar duration. Immunization efforts will have to play out further before we can know more for certain.

    For more context, here are links to further reading from the World Economic Forum’s Strategic Intelligence platform:

    When Can I See My Friends And Travel

    The CDC said fully vaccinated people don’t need to wear a mask or socially distance inside a home when visiting other vaccinated people or an unvaccinated person from one household who is at low risk for severe COVID-19 disease.;

    A person who is fully vaccinated should still wear a mask and socially distance in a home with someone who is unvaccinated and over 65;or has an underlying medical condition that raises the risk of getting severely ill with COVID-19.;

    In a situation where vaccinated;people gather;with unvaccinated people from multiple households, everyone should wear a mask;and follow social distancing protocols. The CDC;recommends gathering outdoors or in a well-ventilated space.;

    Regardless of vaccination status, the CDC recommends avoiding;medium;to large;gatherings. The agency;defers to states that may have guidance restricting the size of gatherings.;

    If a fully vaccinated person attends an event or large gathering, the CDC said, he or she should follow;prevention measures that reduce COVID-19 spread, such as wearing a mask, social distancing and frequent hand-washing.;

    Traveling is one of the fastest ways viruses spread.

    The CDC;maintains Americans should refrain from traveling, referring to the organization’s;travel guidance last updated Feb. 16.

    If a person must travel, the CDC recommends waiting at least two weeks after getting fully vaccinated and;taking the following steps to reduce the risk of COVID-19 transmission:

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    Q: Can You Describe The Mrna Technology Of The Pfizer

    A: The Pfizer-BioNTech COVID-19 Vaccine contains messenger RNA which is genetic material. The vaccine contains a synthetic piece of mRNA that instructs cells in the body to make the distinctive “spike” protein of the SARS-CoV-2 virus. When vaccinated, the body produces copies of the spike protein, which alone does not cause disease, and the immune system learns to react defensively, producing an immune response against SARS-CoV-2.

    FDA scientists have expertise with this technology as it has been used to develop other preventive investigational vaccines that have been tested in human clinical trials. The FDA does not have specific safety concerns with a vaccine that utilizes this technology.

    Am I Still Considered Fully Vaccinated If I Don’t Get A Booster

    ER doc

    Even with the introduction of boosters, someone who has gotten just the first two doses would still be considered fully vaccinated, according to the CDC’s Dr. Kathleen Dooling. That is an important question to people in parts of the country where you need to show proof of vaccination to eat in a restaurant or enter other places of business.

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    Vaccine Protection And Transmission

    COVID-19 vaccines are crucial tools in the pandemic response and protect against severe disease and death. Vaccines provide at least some protection from infection and transmission, but not as much as the protection they provide against serious illness and death. More evidence is needed to determine exactly how well they stop infection and transmission.

    After being vaccinated, individuals should continue taking simple precautions, such as physical distancing, wearing a mask, keeping rooms well ventilated, avoiding crowds, cleaning hands, and coughing into a bent elbow or tissue. Get tested if you are sick, even if youve been vaccinated. Check local advice where you live and work. Do it all!

    How Long Do I Wait Between Covid

    People who receive the Pfizer-BioNTech vaccine must wait at least 21 days before getting their second dose. Those who receive the Moderna vaccine must wait at least 28 days.

    The CDC recommends getting the second shot as close to the three-week or one-month interval as possible. However, the agency updated guidance in January to say the second dose of a two-shot vaccine can be administered up to six weeks after the first, if necessary.

    This guidance pertains only to the vaccines that require two shots, which were developed by Pfizer-BioNTech and Moderna.;

    The recently authorized Johnson & Johnson vaccine may;cause fewer side effects than the other two vaccines. About 50% of trial participants reported;injection-site pain compared with nearly 80% for the Pfizer-BioNTech and Moderna vaccines.

    For the second dose appointment, make sure to bring all the necessary documents from the;first appointment, as well as the vaccination card that should have been given;after the;first dose.

    The vaccination card should detail the vaccine received , the date and the arm;injected . If you lost this card or didnt receive it at the first appointment, dont fret! The state should have an electronic record of that information.

    The immune system generates a response through controlled inflammation. can reduce the production of inflammatory mediators, she said. So;this is the potential mechanism for a reduced immune response to vaccination if you take these medications.

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    Will Booster Shots Contain The Original Vaccine Or One Tailored To Delta

    The boosters will be an extra dose of the original vaccine. Manufacturers still are studying experimental doses tweaked to better match delta. Theres no public data yet that its time to make such a dramatic switch, which would take more time to roll out. And independent research, including studies from Ellebedys team, shows the original vaccine produces antibodies that can target delta.

    Im very, very confident that this vaccine will work against delta with a single booster of the same vaccine, Pfizer CEO Albert Bourla told The Associated Press.

    The Brink: Weve Heard That It Is Ok To Mix And Match Pfizer And Moderna Vaccines To Get The Booster Shot But So Far The Cdc Has Not Recommended That Its Ok For People Who First Received A Johnson & Johnson Vaccine To Now Get A Pfizer Or Moderna Booster Shot Why Is This The Case

    How long will it take to be immune after COVID-19 vaccination?

    Pierre:I hope that scientific reticence will dissipate in the next few weeks. We do have information to show a really potent boosting with mixing vaccination strategies. Most of the data, I will say, are from looking at people who first received the AstraZeneca vaccinewhich is made from the same technology that created the J&J vaccinethat really does show important boosting of the protective effect with an mRNA vaccine given as a second dose. Theres also potentially that benefit for J&J. Theoretically, I would love to give my patients who first got a J&J vaccine an mRNA booster shot. My prediction is that yes, we will soon be able to mix and match those vaccine strategies, but we need a little more data before we get to that guidance .;The other thing to keep in mind is that there is generally less robust data about J&J because there were far less people who got the J&J vaccine compared to people that received either Pfizer or Moderna. J&J was approved later in the game, so not only do we have fewer patients vaccinated, but by and large those people were vaccinated later.

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