Global Statistics

All countries
592,570,675
Confirmed
Updated on August 11, 2022 8:56 am
All countries
562,626,130
Recovered
Updated on August 11, 2022 8:56 am
All countries
6,446,498
Deaths
Updated on August 11, 2022 8:56 am

Global Statistics

All countries
592,570,675
Confirmed
Updated on August 11, 2022 8:56 am
All countries
562,626,130
Recovered
Updated on August 11, 2022 8:56 am
All countries
6,446,498
Deaths
Updated on August 11, 2022 8:56 am
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How Many Weeks Between Covid Shots

What Are The Side Effects

How long should you wait to get the COVID-19 vaccine after getting a pneumonia shot?

According to Pfizer, about 3.8% of their clinical trial participants experienced fatigue as a side effect and 2% got a headache.

Moderna says 9.7% of their participants felt fatigued and 4.5% got a headache.

The CDC reports common side effects on the arm where the shot was administered include:

  • Pain
  • Nausea

Heres What Weve Learned About Spacing Out Covid

Studies and real-world evidence have shown that extending the time between the first and second doses of the Pfizer and Moderna shots improvesimmunity.

A paper published in the journal Nature found that extending the duration between the Pfizer doses to 12 weeks led to a more robust antibody response. Another recent study from the Mayo Clinic found that people who got vaccinated with Pfizer were more likely to get a breakthrough infection compared to those who got the Moderna shots.

Even four weeks made a difference as opposed to having three weeks between doses, Gandhi said.

The real-world evidence from Canada and the U.K., where vaccine scarcity forced people to separate their doses up to four months, compared to the United States and Israel where there were plenty of vaccines also suggests theres some added protection in delaying the second dose.

The vaccine efficacy against symptomatic illness is lower in Israel and the U.S. and both countries opted for a three-week strategy for Pfizer, whereas Canada and the U.K. both have not reported reduction in vaccine effectiveness against symptomatic COVID, Gandhi said.

Is There Any Protection After Just One Dose

Again, its vitally important that individuals get both doses of the vaccine. But people who are playing the waiting game between doses can rest assured that one dose does offer a decent amount of protection.

According to , one dose of Pfizers vaccine provided about 52% protection, and data published on Modernas vaccine suggests that one dose could be up to 80% effective, says Dr. Gordon.

For contrast, the flu shot tends to be about 40 to 60% effective depending on the year. But again, this level of protection doesnt give you should skip the second dose. It is unclear how long the protection from a single dose lasts and the protection is not as good as two doses, Dr. Gordon emphasizes.

Whether youve had one dose, two, or none at all, its still crucial that you wear your mask in settings where you cant be more than six feet apart from others, practice regular hand-washing, and stay home as much as possible until we reach herd immunity, which doesnt feel as far away as it once did. Hang in there!

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When You Are Fully Vaccinated

People are considered fully vaccinated:

  • 2 weeks after their second shot in a 2-dose series, like the Pfizer-BioNTech or Moderna vaccines, or
  • 2 weeks after a single-shot vaccine, like Johnson & Johnsons Janssen COVID-19 Vaccine

Administration of an additional primary dose or a booster dose is not required to be considered fully vaccinated for public health purposes at this time.

You are not fully vaccinated if:

  • It has been less than 2 weeks since your single-dose shot
  • It has been less than 2 weeks since your second shot of a two-dose vaccine
  • You havent received your second dose of a two-dose vaccine

Everyone ages 16 years and older, who is fully vaccinated, can get a COVID-19 vaccine booster shot. Learn more about booster shots.

Should We Have Waited Longer Between Covid

Delayed second Pfizer COVID

When the Pfizer and Moderna COVID-19vaccines first became available in December 2020, there was a strict dosing schedule recommended for the inoculations.

People who got the Pfizer shot were advised to wait 21 days before getting dose two, and those who got Moderna waited 28 days. For the most part, people in the United States adhered to this schedule, but in areas where supply was tight, people had to wait a few extra weeks before they could access a second dose.

In the United Kingdom and Canada, for example, limited supply meant that people often had to wait anywhere from eight to 12 weeks for their second dose. Many individuals in this situation were understandably concerned about how delaying the second dose would ultimately impact their protection but data would eventually show that extending the waiting period for the second dose was not a problem, and was actually beneficial.

Theres a lot of evidence now that spacing out the vaccines was a good idea to begin with, Monica Gandhi, an infectious diseases specialist with the University of California, San Francisco, told HuffPost.

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What Has Pfizer Said About A Fourth Booster Shot To Protect Against Covid

“I think we will need the fourth dose,” Pfizer CEO Albert Bourla told CNBC in December. Bourla initially projected a waiting period of a full year after a third dose but, with omicron, “we may need it faster,” he said.

“There are vaccines like polio one dose is enough,” Bourla said back in April. “And there are vaccines, like flu, that you need every year. The COVID-19 virus looks more like the influenza virus than the poliovirus.”

Executives said the companies are experimenting with an omicron-specific version of Pfizer-BioNTech’s current vaccine, Comirnaty, that could be ready by March, pending regulatory approval.

They’re also looking at a multivariate vaccine that could protect against other strains, such the original alpha variant and more virulent delta strain.

How Long Do We Have To Wait Between Vaccine Doses

The answer to this question varies depending on which vaccine you get. There are two vaccines currently being givenPfizer and Modernaand they have slightly different timelines.

Pfizer vaccine doses are administered 21 days apart and Moderna doses are 28 days apart, says Dr. Gordon. However, if you are unable to schedule your second dose at these intervals, according to the CDC, the second dose may be given up to six weeks after the first dose, and the series does not need to be restarted if the second dose is given later than 21 days or 28 days .

So while you should do your absolute best to get your second dose based on the recommended timeline, its still important to get your second dose even if youre a little bit overdue. That being said, we dont currently know what efficacy looks like beyond 42 days for both Pfizer and Moderna, according to Dr. Noble.

Once both doses have been administered, when will you have full protection It takes approximately two weeks after the second dose to build your immune system up to the maximum vaccine benefit, says Dr. Gordon.

Related: Do You Still Need a Vaccine If Youve Already Had COVID?

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Timing Of Your Second Shot

The timing between your first and second shots depends on which vaccine you received. If you received the:

Moderna COVID-19 vaccineGet your second shot 4 weeks after your first

You should get your second shot as close to the recommended 3-week or 4-week interval as possible. However, your second dose may be given up to 6 weeks after the first dose, if necessary. You should not get the second dose early. There is currently limited information on the effectiveness of receiving your second shot earlier than recommended or later than 6 weeks after the first shot.

However, if you do receive your second shot of COVID-19 vaccine up to 4 days before or at any time after the recommended date, you do not have to restart the vaccine series, and you can be considered fully vaccinated. This guidance might be updated as more information becomes available.

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If You Did Not Get Your Second Dose

If you had 1 dose of the AstraZeneca vaccine, you will be offered the Pfizer/BioNTech vaccine or Moderna COVID-19 vaccine for your second dose. This will mean that you have completed your first round of COVID-19 vaccination.

The Moderna COVID-19 vaccine is only used in adults aged 30 and older in Ireland.

You should get your second dose at least 28 days after getting your first dose of AstraZeneca. Bring your vaccination card that shows you have had 1 dose of the AstraZeneca vaccine.

If you recently had COVID-19, wait at least 4 weeks before getting your second dose.

Registering Your Vaccination If You Got It Out Of The Province

If you received a COVID-19covid 19 vaccine outside of Ontario or Canada, you can register your vaccination by contacting your local public health unit .

You must provide proof, such as an immunization record or a proof of vaccination certificate to your PHU to be registered in the system.

If needed, you can book your second dose through:

  • the provincial booking system or calling the Provincial Vaccine Contact Centre
  • your primary care setting
  • public health units that use their own booking system

If you received both doses of a Health Canada authorized vaccine, you only have to provide proof of vaccination to your PHU. No other action is needed. If you received one or two doses of a COVID-19covid 19 vaccine not authorized by Health Canada, please contact your public health unit to see if you need any additional doses.

For more information, read the Ministry of Health COVID-19 Guidance for Individuals Vaccinated Outside of Ontario/Canada.

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Will Everyone Be Eligible For A Fourth Covid Vaccine Dose Eventually

Scientists in Germany, the UK and other countries are considering fourth shots of a COVID-19 vaccine for the general public. In January, health ministers in European Union countries were told to prepare for fourth doses as soon as data indicates they are needed, Reuters reported.

This year, Israel started offering fourth booster shots to citizens 60 and older before expanding to all vulnerable adults, and Denmark authorized fourth doses for at-risk communities. Sweden recently authorized fourth doses of the mRNA vaccines for all citizens over 80, starting Feb. 22.

“With the data now coming for the omicron variant, it is very clear our vaccine for the omicron variant should be a three-dose vaccine,” Ugur Sahin, CEO of BioNTech, which makes a vaccine in partnership with Pfizer, said in a statement.

If three doses of the Pfizer COVID-19 vaccine are needed to protect against omicron, the timeline for a fourth shot could be pushed up to as early as March, Pfizer executives said.

“I think it is very likely that we will need a fourth booster, possibly already this spring, particularly if omicron continues to dominate,” Mikael Dolsten, Pfizer’s chief scientific officer, told CBS News.

How To Get A Booster Dose Of The Coronavirus Vaccine

Worries about Covid

A booster dose of the coronavirus vaccine is available for everyone aged 16 and over, and some children aged 12 to 15, who have had 2 doses of the vaccine at least 3 months ago.

If you have not booked your appointments yet, you’re still eligible and can book anytime.

If you have recently had a positive COVID-19 test, you need to wait before getting the COVID-19 vaccine.

People aged 18 and over, and eligible children aged 12 to 15, need to wait 4 weeks. Young people aged 16 and 17 need to wait 12 weeks.

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Coronavirus In Children And Young People

For most children and young people, coronavirus is usually a milder illness that rarely leads to complications. For a very few the symptoms may last for longer than the usual 2 to 3 weeks.

Getting the vaccine will help to protect children and young people against coronavirus. Although most children and young people usually have mild illness, they can pass on their infection to others in their family and those they come into contact with.

Even if children and young people have already had coronavirus, they could still get it again. The vaccine will reduce their risk of getting coronavirus. If they do get it again, the vaccine can reduce how serious their symptoms will be.

Timing Of The Second Dose

The Joint Committee on Vaccination and Immunisation currently advises that you should have your second dose around 12 weeks after your first dose. Having a 12 week gap may extend the length of time your protection will last after the second dose.

As a precaution, the JCVI believes that a gap of 8 to 12 weeks may reduce the risk of more serious but rare side effects, like myocarditis. The JCVI also suggests that if you have had a COVID-19 infection you should wait 12 weeks before having the next dose. If you have had the first dose of vaccine and been infected, you are likely to already have high levels of protection.

These gaps may be reduced to 8 weeks if we expect protection from the vaccine or from prior infection to be reduced, for example with a new variant.

There may be other reasons for having the second dose even sooner, after 8 weeks.

These reasons include:

  • if you are considered to be at risk and have not yet had your second dose
  • if you live with someone who is considered at risk and you want to help protect them
  • if your circumstances, such as work or essential travel, require a second dose

If you are still unsure, you can discuss your decision with a doctor, nurse or pharmacist.

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After Getting Your Second Shot

You may experience side effects after getting a COVID-19 vaccine. These are normal signs that your body is building protection. Get helpful tips on how to reduce any pain or discomfort.

Cases of myocarditis and pericarditis in adolescents and young adults have been reported more often after getting the second dose than after the first dose of one of the two mRNA COVID-19 vaccines, Pfizer-BioNTech or Moderna. These reports are rare and the known and potential benefits of COVID-19 vaccination outweigh the known and potential risks, including the possible risk of myocarditis or pericarditis.

Usev-safe on your smartphone to tell CDC about any side effects after getting the COVID-19 vaccine. If you enter your second shot in your v-safe account, the system will send you daily health check-ins. Please note that v-safe is not automatically notified when you receive a second shot of vaccine, so you must enter the information yourself.

Are You More Likely To Get Side Effects After The First Or Second Dose

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With the two-shot vaccines, people are more likely to report side effects after their second dose, experts have said.

According to the CDC, side effects after your second shot “may be more intense than the ones you experienced after your first shot.”

“These side effects are normal signs that your body is building protection and should go away within a few days,” the CDC states.

In trials of both the Moderna and Pfizer vaccines, more people experienced side effects after the second dose.

But that doesn’t mean that you shouldn’t get your second shot if you get side effects after your first, experts say.

When people receive that second dose, they are receiving the second booster to try and reach the maximum efficacy,” said Dr. Edward Cachay, infectious disease specialist at UCSD.

The CDC also noted that both shots are needed.

“The Pfizer-BioNTech COVID-19 Vaccine and Moderna COVID-19 Vaccine both need 2 shots in order to get the most protection,” the CDC states. “You should get the second shot even if you have side effects after the first shot, unless a vaccination provider or your doctor tells you not to get it.”

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Protection From The First Dose

Studies suggest that even after 1 dose of vaccine your risk of serious complications from COVID-19 infection are greatly reduced. This protection is expected to last for a few months in young people.

People who have had previous COVID-19 infection who then get 1 dose of vaccine, and those who get infected after the first dose, make a good immune response at least as good as people who have had 2 doses. This suggests that young people who get both infection and vaccine will have high levels of protection.

Cdc: Some People Should Wait Longer For 2nd Covid Shot

FILE A dose of a Pfizer COVID-19 vaccine is prepared at Lurie Childrens hospital, Nov. 5, 2021, in Chicago. Some people getting Pfizer or Moderna COVID-19 vaccines should consider waiting up to eight weeks between the first and second doses, instead of the three or four weeks previously recommended, U.S. health officials said.,Tuesday, Feb. 22, 2022.

NEW YORK Some people getting Pfizer or Moderna COVID-19 vaccines should consider waiting up to eight weeks between the first and second doses, instead of the three or four weeks previously recommended, U.S. health officials said.

The Centers for Disease Control and Prevention on Tuesday quietly changed its advice on spacing the shots.

CDC officials said they were reacting to research showing that the longer interval can provide more enduring protection against the coronavirus. Research suggests that 12- to 64-year-olds especially males ages 12 to 39 can benefit from the longer spacing, the CDC said.

They also say the longer wait may help diminish an already rare vaccination side effect: a form of heart inflammation seen in some young men.

The change wont affect many people, coming 14 months after the beginning of the U.S. vaccination campaign. The CDC says 73% of people age 12 and older already have gotten two doses of vaccine.

Dr. William Schaffner, a Vanderbilt University vaccines expert, said the action makes sense.

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