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Updated on June 23, 2022 9:27 pm
All countries
Updated on June 23, 2022 9:27 pm
All countries
Updated on June 23, 2022 9:27 pm

Global Statistics

All countries
Updated on June 23, 2022 9:27 pm
All countries
Updated on June 23, 2022 9:27 pm
All countries
Updated on June 23, 2022 9:27 pm
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Can You Still Spread Covid After Getting Vaccine

You May Have These Other Symptoms Too

Can you still spread COVID-19 after you get vaccinated?

Besides those you’ve just read about, the CDC reports patients having chills, muscle or body aches, congestion or runny nose, nausea or vomiting and diarrhea. “People with COVID-19 have had a wide range of symptoms reported ranging from mild symptoms to severe illness. Symptoms may appear 2-14 days after exposure to the virus,” says the CDC. Keep reading for what you should do about them.

Why Dont We Have Data On Breakthrough Cases

Up until May 1, 2021, the CDC recorded all breakthrough cases, whether mild, moderate, or severe. But starting on May 1, they began recording only breakthrough cases that resulted in hospitalization or death. The CDC explains that they made this change to help maximize the quality of data collected on cases of greatest clinical and public health importance.

But this means that in the U.S. we do not know how often breakthrough cases occur or which variants are causing breakthroughs .

So, should you worry that a fully vaccinated person who may have an asymptomatic breakthrough case can unknowingly transmit the virus to someone who is unvaccinated?

I would say its not likely, but we dont yet know with certainty, says Dr. Meyer. Theoretically, it may be true that people are being infected by their asymptomatic vaccinated contacts, but were just not seeing that clinically, she says. And the verdict is out on this in terms of the epidemiologic data.

Summary Of Recent Changes

  • Data were added indicating that COVID-19 vaccination remains highly effective against COVID-19 hospitalization and death caused by the Delta variant of SARS-CoV-2.
  • Data were added from studies published since the last update that further characterize reduced COVID-19 vaccine effectiveness against asymptomatic and mild symptomatic infections with the Delta variant of SARS-CoV-2.
  • Data were added from studies published since the last update that suggest decreased vaccine effectiveness against SARS-CoV-2 infection, symptomatic disease, and hospitalization in several groups of immunocompromised persons and potential benefit of a third dose of COVID-19 vaccine in immunocompromised populations.
  • Data were added summarizing several small studies of heterologous COVID-19 vaccination series , which found that a dose of adenovirus vector vaccine followed by a dose of mRNA vaccine elicits antibody responses at least as high as two doses of mRNA vaccine.
  • Data were added from recent studies examining the duration of protection conferred by COVID-19 vaccination.
  • Data were added from recent studies describing clinical outcomes and transmissibility of SARS-CoV-2 infections in fully vaccinated persons.

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Evidence Mounts That People With Breakthrough Infections Can Spread Delta Easily

A new study finds that this dominant variant can grow in the noses of vaccinated people as strongly as in unvaccinated people.

A preliminary study has shown that in the case of a breakthrough infection, the Delta variant is able to grow in the noses of vaccinated people to the same degree as if they were not vaccinated at all. The virus that grows is just as infectious as that in unvaccinated people, meaning vaccinated people can transmit the virus and infect others.

Previous studies in hospitals in India Provincetown, Massachusetts and Finland have also shown that after vaccine breakthrough infections with Delta, there can be high levels of virus in peoples nose whether they are vaccinated or not. The next logical step was to determine whether vaccinated people could shed infectious virus. Many experts suspected they did, but until this study it hadnt been proven in the lab.

We’re the first to demonstrate, as far as I’m aware, that infectious virus can be cultured from the fully vaccinated infections, says Kasen Riemersma, a virologist at University of Wisconsin who is one of the authors of the study.

If the Wisconsin study finding holds up, then people with breakthrough infectionsmany of whom do not develop COVID symptomscan unknowingly spread the virus. It an alarming finding, explains Katarina Grande, a public health supervisor and the COVID-19 Data Team Lead of Madison & Dane County, who led the study.

Covid Vaccines Dont Contain Live Virus To Shed

Can You Still Spread the Coronavirus After You

However, none of the COVID vaccines approved for use anywhere around the world so far use live virus.

Instead, they use other technologies to train our bodies to recognise SARS-CoV-2 and to mount a protective immune response should we ever be exposed to it.

For instance, the AstraZeneca vaccine is a viral vector vaccine. This uses a modified chimpanzee virus to carry into the body the genetic instructions to produce the SARS-CoV-2 spike protein. Your body then uses these instructions to make the spike protein, and to raise a protective immune response.

The Pfizer vaccine is an mRNA vaccine, which contains the genetic material to code for the spike protein. Once inside your cells, your body uses those instructions to make spike protein, again raising a protective immune response.

Read more:What’s the difference between viral shedding and reinfection with COVID-19?

COVID vaccines dont give you the disease or give you a positive COVID test. Again, they dont contain live virus. They contain fragments of spike protein or the instructions on how to make it.

Even if you could shed spike protein after vaccination, that wouldnt be enough to cause an infection. For that you need the entire virus, which the vaccines dont contain.

And the mRNA in the Pfizer and Moderna vaccines is very short-lived, and is quickly degraded in our cells. Again, the mRNA wouldnt be enough to cause an infection. It would need to be packaged inside a live virus, which our vaccines dont contain.

Also Check: How Long Cvs Covid Test Results

Astrazeneca Vaccine Side Effects

The TGA has provisionally approved AstraZeneca’s vaccine, which is called Vaxzevria.

If you do experience any side effects, most of them are mild to moderate in nature and resolve within a few days. However, some side effects may need medical attention.

Common side effects may include:

  • tenderness, pain, swelling, redness, itching or swelling at the injection site
  • feeling unwell

Rare side effects that have been reported after vaccination with Vaxzevria include:

  • severe allergic reaction

A very rare and unusual blood-clotting condition called thrombosis with thrombocytopenia has been reported following vaccination with AstraZeneca’s Vaxzevria. It is different to other blood-clotting conditions, such as deep-vein thrombosis .

The symptoms of TTS typically appear between 4 and 42 days after vaccination. People with this condition are very unwell and need to go to hospital, where TTS can be treated effectively.

Symptoms of TTS may include:

  • headache that persists for more than 48 hours after vaccination, or appears later than 48 hours after vaccination, which:
    • may be relieved by simple painkillers initially, but then persists
    • may be worse when lying down
    • may be accompanied by nausea and vomiting
  • persistent abdominal pain
  • tiny blood spots under the skin, away from the site of injection

If you experience any side effect and you’re worried, speak to your doctor.

Whats The Chance Of A Vaccinated Person Spreading Covid

While unvaccinated people are by far at highest risk for catching and spreading Covid-19, its also possible for a vaccinated person to become infected and transmit the illness to others. A recent outbreak in Provincetown, Mass., where thousands of people gathered in bars and restaurants, showed that vaccinated people can sometimes spread the virus.

Even so, many experts believe the risk of getting infected from a vaccinated person is still relatively low. Dr. Jha noted that after an outbreak among vaccinated and unvaccinated workers at the Singapore airport, tracking studies suggested that most of the spread by vaccinated people happened when they had symptoms.

When weve seen outbreaks, like those among the Yankees earlier in the year and other cases, almost always people are symptomatic when theyre spreading, Dr. Jha said. The asymptomatic, pre-symptomatic spread could happen, but we havent seen it among vaccinated people with any frequency.

Another study from Singapore looked at vaccinated and unvaccinated people infected with the Delta variant. The researchers found that while viral loads in vaccinated and unvaccinated workers are similar at the onset of illness, the amount of virus declines more rapidly in the vaccinated after the first week, suggesting vaccinated people are infectious for a shorter period of time.

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What’s Happening In Your Community

We’re on track to meet and hopefully surpass our vaccination targets. When a lot of people in a community are vaccinated, we see the following things occur:

  • The spread of COVID-19 in the community is reduced.
  • This means fewer cases, hospitalizations and deaths.
  • Those who can’t be vaccinated, or aren’t yet vaccinated, are expected to have some indirect protection by the vaccinated people around them.
  • This includes children under 12 and those awaiting their vaccine appointment.
  • Public health authorities will gradually lift restrictive public health measures.
    • Why Are Vaccinated People Still Getting Covid

      VERIFY: Can I still spread COVID-19 after getting vaccinated?

      Weve heard of cases where people who are in between doses or people who have received both doses are still testing positive or becoming infected with COVID-19. How is this possible? Dr. Cardona attributes this to exposure risks or where people are in the vaccination process.

      Immunization with the COVID-19 vaccines provides the best protection within two weeks of being fully vaccinated. A person is considered fully vaccinated two weeks after receiving the second dose of Pfizers or Modernas vaccine or one dose of Johnson & Johnsons. If someone tests positive for COVID-19 or becomes ill a few days later, they most likely were exposed before being fully vaccinated. There are reported cases of illness and/or exposure after the vaccines, but the complications of the disease for those not vaccinated yet has been of greater magnitude.

      Read Also: How Long Cvs Covid Test Results

      Is It Still Safe To Gather Unmasked With Vaccinated People

      In many cases it will be safe, but the answer depends on a number of variables. The risk is lower with a few close family members and friends than a large group of people you dont know. Outdoor gatherings are safer than indoor gatherings. Whats the community transmission rate? Whats the ventilation in the room? Do you have underlying health issues that would make you vulnerable to complications from Covid-19? Do any of the vaccinated people have a fever, sniffles or a cough?

      Its Still Good To Be Cautious

      While this is encouraging news, Dr. Cardona stresses that fully vaccinated people still need to be careful as everything opens up again.

      Virus transmission may still occur from those who are infected and asymptomatic, or ill without knowing it, especially in crowded areas with a lack of physical distancing, respiratory precautions and hand washing. Other factors to consider are ongoing community transmission and immunization rates.

      If you havent been vaccinated or havent completed the vaccination series, she recommends doing so. And if you have a unique circumstance that delays your ability to complete your series of shots as scheduled, still get the second dose. Dr. Cardona says restarting the series isnt necessary.

      The CDC also recommends that fully vaccinated people wear masks indoors in public for maximum protection from the delta variant and to lessen the risks of transmission. You should also wear a mask if you have a weakened immune system, an underlying medical condition or are at high risk for severe disease.

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      Can I Still Spread Covid

      Yes, you can still spread COVID-19 even if you’re fully vaccinated, although the chances of that happening is lower than when you’ve unvaccinated.

      Data from the UK has shown that one dose of AstraZeneca or Pfizer lowers a person’s ability to infect their household contacts.

      More research is being done to understand how vaccinated individuals can still spread the disease to others if they’re infected with the Delta variant.

      However, studies still show that the vaccines offer significant protection even if they don’t prevent infections entirely.

      First A Refresher On Why We Need A Covid

      Can you still get Covid

      Herd immunity, a.k.a. community immunity, means a significant portion of a population is immune to an infectious disease, according to the Centers for Disease Control and Prevention . This ultimately makes the spread of the infectious disease from person to person unlikely.

      Herd immunity can be achieved when enough people contract an illness and build natural immunity to it or through vaccination. In the case of COVID-19, natural immunity is out of the question, as the virus can be deadly or cause long-lasting side effects in those who survive. So far, more than 530,000 Americans have lost their lives to COVID-19.

      Thats why vaccination is crucial: Its the safest way to achieve herd immunity, says Richard Watkins, M.D., an infectious disease physician and a professor of internal medicine at the Northeast Ohio Medical University. Herd immunity also helps protect vulnerable people who cant get vaccinated. When a large portion of people can get the vaccine choose not to do so, those who cannot receive one will remain at riskand the virus will continue to circulate.

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      You May Have A Headache

      Broadway star Danny Burstein recalled getting “migraines on steroids” during his terrible bout with COVID-19, and headaches are one of the CDC’s most common symptoms. Since you might normally get themdue to stress, loud noises or body chemistryyou may not associate them with the coronavirus. But you should. “We’re seeing a small subset of people who have prolonged headache symptom long after their acute illness is over,” Dr. Valeriya Klats, a neurologist and headache specialist with the Hartford HealthCare Ayer Institute Headache Center in Fairfield County, tells Hartford Healthcare.

      What Is Viral Shedding Anyway

      People can shed virus after a viral infection, such as SARS-CoV-2, the virus that causes COVID-19.

      If people are infected, they can shed virus via their respiratory secretions when they cough and sneeze. During the pandemic, thats why we socially distance, wear masks and stay at home if were sick. We can only infect someone if the virus is live.

      Read more:We don’t know for sure if coronavirus can spread through poo, but it’s possible

      Some vaccines for other diseases contain live viruses that have been weakened . Examples are vaccines against measles, rubella, mumps and herpes zoster .

      These train your body to mount an immune response with a version of the virus that isnt so dangerous.

      For example, with the very effective vaccine against herpes zoster , there is a very small risk the weakened virus can cause infection. However, this happened in less than 1% out of more than 20,000 people vaccinated over a ten-year period. The majority of people infected this way had a weakened immune system.

      Read more:Explainer: how do you get shingles and who should be vaccinated against it?

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      How Long Do The Covid

      The jury is still out on that one. According to Dr. Cardona and the Centers for Disease Control and Prevention , the exact timeframe for protection is unknown at this time. When you think about it, we all tolerate vaccines differently. So, the scientific community is still studying natural immunity and vaccine-induced immunity concerning COVID-19.

      We dont know exactly how long the vaccines will protect us after being fully vaccinated. However, the CDC and experts are still working to determine the answer to this question and will keep us informed of any changes. But the one thing we do know is that getting vaccinated is still the safer choice for preventing serious illness for you, your loved ones and the benefit of our communities.

      Can You Spread Covid

      You can still spread COVID-19 after getting vaccine: What you should know


      You can still spread COVID-19 after youve been fully vaccinated, so be mindful that your cold or allergy symptoms may be a mild breakthrough case that can be spread to unvaccinated children and others and may make them very sick. Masking, social distancing and hand-washing are still recommended. If you have symptoms that could be COVID-19, stay home.

      Also Check: Cvs Covid Test Results Time Frame

      Voluntary Reporting By State Health Departments

      When the United States began widespread COVID-19 vaccination, CDC put in place a system where state health departments could report COVID-19 breakthrough infections to CDC. After collecting data on thousands of breakthrough infections, CDC changed the reporting system to improve data quality on breakthrough infections, and primarily focus on those among people who are hospitalized or die. This shift helped maximize the quality of the data collected on infections of greatest clinical and public health importance. Currently, 49 states are reporting data.

      • Unexpected patterns, such as trends in age or sex.
      • The specific types or brands of vaccine involved.
      • Underlying health conditions in these persons.
      • Which SARS-CoV-2 variants are observed in persons who are hospitalized or who die.
      • Demographic cohorts .

      So far, CDC has not observed any unexpected patterns in these reported breakthrough infections.

      What You Need To Know

      • COVID-19 vaccines are effective at helping protect against severe disease and death from variants of the virus that causes COVID-19 currently circulating, including the Delta variant.
      • If you are fully vaccinated you can resume many activities that you did before the pandemic, but you should wear a mask indoors in public if you are in an area of substantial or high transmission to maximize protection from the Delta variant and possibly spreading it to others.
      • You may have side effects after vaccination. These are normal and should go away in a few days.
      • Learn how to find a COVID-19 vaccine so you can get it as soon as you can.

      Read Also: How Long Cvs Covid Test Results

      What Precautions Should I Take After I Get The Covid

      Dr. Adalja says it might take a while before we have the research to determine that getting vaccinated reduces the risk of spreading the virus to others.Its going to take time to accrue this data, he says.People want to see more data before they definitively make something part of public health guidance.

      In an effort to compile this data, researchers are going back to the people who were vaccinated as part of the Pfizer-BioNTech and Moderna trials and looking for antibodies that show theyve been infected with COVID-19, NPR reports. But its not a perfect method, as antibody tests arent always accurate and its unclear how long these infection-fighters last within the body.

      Until we have that information, the CDC emphasizes thatits important for everyone to continue using all the tools available to help stop this pandemic as we learn more about how COVID-19 vaccines work in real-world conditions. As a result, even those who have received the COVID-19 vaccine should continue to wear a face mask, stay at least six feet away from people outside of their household, avoid crowds, and wash their hands often. However, the CDC says fully vaccinated people can now see other fully vaccinated people without a mask or social distancing.

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