Why Do I Need The Vaccine If I’ve Already Had Covid
According to a study from Kentucky analyzed in last week’s CDC report, people who previously had COVID-19 were about twice as likely to get it again if they weren’t vaccinated, suggesting that the coronavirus vaccines are very effective even if you’ve already had the virus.
“If you have had COVID-19 before, please still get vaccinated,” CDC director Dr. Rochelle Walensky said on Friday. “Getting the vaccine is the best way to protect yourself and others around you, especially as the more contagious delta variant spreads around the country.”
Weissenbach says that strength of someone’s natural immunity from infection likely won’t last “over the long haul,” and that vaccination might provide better protection. This is because vaccines target a “particular reaction” from your immune system, he says.
“It’s done so in a very targeted and emphasized way so that it generally is going to be a more robust, lasting immune response than may otherwise be provided naturally through your body,” Weissenbach says. Think of it as a “double dose,” he says.
But research shows people who’ve already had COVID-19 strongly benefit from a single dose of a COVID-19 vaccine, which is not the case for people who haven’t been sick. According to an article in Nature, some people who’ve had COVID-19 and received just one vaccine shot mount immune responses equal to or greater than people who got both doses but never had COVID-19.
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Even though those on social media seemed to take the relatively new statements on the CDCs website as a statement about immunity, an August 14 CDC media release suggested otherwise. This release was entitled, Updated Isolation Guidance Does Not Imply Immunity to COVID-19. Take a wild guess as to what this media release said.
Here is how the release began: On August 3, 2020, CDC updated its isolation guidance based on the latest science about COVID-19 showing that people can continue to test positive for up to 3 months after diagnosis and not be infectious to others. The media release continued by saying, Contrary to media reporting today, this science does not imply a person is immune to reinfection with SARS-CoV-2, the virus that causes COVID-19, in the 3 months following infection.
So what does the updated guidance really mean? The CDC release added that The latest data simply suggests that retesting someone in the 3 months following initial infection is not necessary unless that person is exhibiting the symptoms of COVID-19 and the symptoms cannot be associated with another illness.
Looks like then the CDC didnt really make a statement about immunity to the Covid-19 coronavirus. It may have been more about people continuing to test positive for up to three months due to fragments of viral DNA possibly remaining after the Covid-19 coronavirus infection had passed.
Covid-19 virus antibody testing is different from testing for the presence of the virus.
What Can Be Done Right Now To Reduce The Toll Of Covid
The biggest thing that can be done to protect Black and minority communities is to ensure equitable access to vaccines.
Keeping an eye on the data is also an important priority: knowing who is impacted and where theyre impacted.
Communication is also really importantmaking sure that the public understands why we might be seeing these patterns, and that its more about our society and the way our resources and opportunities are allocated than it is about individual behaviors. We need to do what we can to better understand the challenges of those communities, engage with trusted leaders, listen with respect, and show empathy and concern. We need to recognize the remarkable contributions of African American communities and follow our words up with real actions that bring about positive change.
We also need to focus on frontline workers and low-wage workers, and understand their needsproviding protective equipment, safe spaces to work, paid sick leave, hazard pay, or health insurance and access to testing and care. And, we need to provide for peoples basic needs: stable housing, food security, and digital access to education and health care.
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What Makes Mrna Vaccines So Beneficial
have several advantages. Because the cell itself is going to make the protein, it’s much more likely to be the native protein or have the right properties that the virus would also have.
Another big advantage is that they’re fast to make. If you have the basic platform that to insert the sequence for your particular protein of interest, you can just take out and put another one in. It’s very fast to substitute in a new, different coding sequence for a protein.
SOURCE: Public Health On Call Podcast
Are Variants To Blame For Reinfections
Not necessarily. Dr. Esper says the coronavirus doesnt mutate nearly as much as the flu, which changes nearly everything about its appearance from one year to the next. Rather, its COVID-19s infectiousness that makes it so, well, infectious.
This variants infectiousness including its ability to evade immune systems and prevent long-lasting immunity for those people who are infected with it is one of the reasons why its been able to persist and come back, he explains.
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Do The Covid19 Vaccines Have Adverse Reactions
Like all medicines, vaccines can cause adverse reactions. Most of these are mild and short term, such as pain at the injection site, tiredness or a headache. Many people don’t get any side effects. It can happen with many vaccines that some people might feel slightly unwell because their immune system is responding to the protein, but this is not a COVID-19 illness and the vaccine cant give you COVID-19.
Can Getting The Covid Vaccine Make You Contagious To Others
None of the COVID vaccines currently rolling out across the U.S. will result in a person being contagious for the disease itself, experts say.
With multiple vaccines now approved for use, some people have turned to the internet for answers. Over the past day, there was a rise in searches from Americans asking if COVID can be contracted from a person who has just received a vaccine.
Searches included “Can you get COVID from someone who has just been vaccinated” and “Can you catch COVID from someone who just had the vaccine?”
The underlying suggestion on some of these queries logged by the search engine giant was that a dose of the vaccine could somehow make that person more likely to spread SARS-CoV-2, which is the name of the virus known to cause COVID disease.
Such an assumption could be based around the fact other vaccines use a virus itself to prompt the body to start an immune response. But health experts, and the companies making the COVID vaccines, are clear: That’s not how these vaccines work.
The Centers for Disease Control and Prevention has said COVID vaccines will not make a person sick with the disease. Crucially, none of the three approved vaccines contain the live virus that causes COVID, only instructions that teach our body how to”recognize and fight” future infections of SARS-CoV-2, and build up immunity.
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Yes It Is Definitely Possible To Get Covid
You might feel elated after you get your first dose of the Pfizer and Moderna vaccines, and understandably so. The vaccines are being hailed as miraculous because of how quickly they were developed, as well as because of how effective they are.
But it takes time for your immune system to start to build up a response, and experts still arent entirely clear exactly how much protection people have after just one shot. Current studies suggest that a single dose of the Pfizer or Moderna vaccine is about 80% effective in preventing COVID-19 infection about two weeks after your first shot.
It definitely can and does happen, said Paul Pottinger, an infectious diseases expert at the University of Washington, referring to the possibility of getting infected between two doses. Remember, we even see COVID-19 infections in patients whove been fully immunized, meaning a solid two to five weeks after their second dose of either of or mRNA immunizations.
Researchers have known about this possibility since the get-go. Pottinger pointed out that the original clinical trials for the Pfizer and Moderna vaccines showed they were both roughly 95% effective in preventing COVID-19 after both shots. But some of the vaccine recipients who ended up getting sick during the trials were in between their two doses.
What Is Known About Young Children And Whether They Are Carriers And Can Transmit The Virus
Young children can be infected and transmit to others.
It continues to be the case that children often do not have any symptoms at all. If they do have symptoms, they’re quite mild. This makes it hard to understand what transmission looks like in children.
There is a rare and dangerous condition in sick children called multi-system inflammatory syndrome in children which is thought to be caused by an immune reaction to SARS-CoV-2.
SOURCE: Public Health On Call Podcast
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How Common Is It For A Virus To Mutate Is It Unusual To See New Variants Of Sars
All viruses mutate, and SARS-CoV-2 has been mutating at a pretty consistent rate since it entered the human population.
This new variant has accumulated an extremely large number of mutations compared to other lineages. Usually we can follow the evolution of a virus because we find related viruses with fewer mutations. But with this virus, it seems to have just appeared with a lot of mutations. It will be important to determine how this virus got so many mutations without being identified sooner.
SOURCE: Andrew Pekosz
Will We Use The Mrna Platform To Make Other Kinds Of Vaccines
We’re very likely to see other vaccines . came along as a brand-new virus, so it opened the way to apply these newer methods.
There are still questions about how durable this immunity is but its likely to get applied to more emerging infectious. Where we have other new viruses coming on the scene, it may embolden people somewhat to try it.
SOURCE: Public Health On Call Podcast
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What Are Mrna Vaccines And How Are They Different From Other Types Of Vaccines
All vaccines deliver a viral protein that causes the person being vaccinated to make an immune response. There are different ways to do this: one is to give the whole, inactivated virus so that is doesn’t make the person sick.
Another way is to deliver the nucleic acid that encodes the protein and let the cells actually make the protein. RNA is the nucleic acid that codes for proteins that cells make. It has all the information needed to be able to synthesize the protein. deliver the RNA that encodes the viral protein you’re interested in and lets the cell actually make that protein to then stimulate the immune system.
While Rare Reinfection With Covid
Immunity isn’t universal, and it’s certainly not simple. Case reports and studies also show that reinfection with COVID-19 is possible albeit rare.
“Another recent study found that not only can a person get COVID-19 a second time, reinfected individuals can carry significant amounts of the virus without showing any symptoms raising concern about inadvertent transmission of the virus during reinfection,” warns Dr. Martinez.
The specifics of being immune to COVID-19 likely vary by person, how severe the infection was and a variety of other factors. And while COVID-19 antibody testing is available, the results can only help you understand whether you might have been infected in the past not how robust your natural immunity might be or how protected you are from reinfection.
“The biggest issue with natural immunity is that there’s no easy way to assess it at the individual level out in the community. We don’t have a way to say, ‘Your natural immunity should protect you for about eight months’ to one person, and then say, ‘Your natural immunity will only protect you for a few months’ to the next,” adds Dr. Martinez.
For this reason, Dr. Martinez urges people to continue to stay vigilant and practice the protective behaviors that help keep yourself and everyone else safe even if you’ve already had COVID-19. He also recommends anyone who’s eligible for the COVID-19 vaccine to get vaccinated.
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When Can I Discontinue My Self
If you have not been vaccinated, a full, 14-day quarantine remains the best way to ensure that you don’t spread the virus to others after you’ve been exposed to someone with COVID-19.
However, according to CDC guidelines, you may discontinue quarantine after a minimum of 10 days if you do not have any symptoms, or after a minimum of seven days if you have a negative COVID test within 48 hours of when you plan to end quarantine.
If you are fully vaccinated and have been around someone with or suspected of having COVID-19, you do not need to self-quarantine. However, as of July 2021, the CDC recommends that you be tested three to five days after exposure and wear a mask in public indoor settings for 14 days or until you receive a negative test result.
What Are The Symptoms Of Covid
Some people infected with the virus have no symptoms. When the virus does cause symptoms, common ones include fever, body ache, dry cough, fatigue, chills, headache, sore throat, loss of appetite, and loss of smell. In some people, COVID-19 causes more severe symptoms like high fever, severe cough, and shortness of breath, which often indicates pneumonia.
People with COVID-19 may also experience neurological symptoms, gastrointestinal symptoms, or both. These may occur with or without respiratory symptoms.
For example, COVID-19 affects brain function in some people. Specific neurological symptoms seen in people with COVID-19 include loss of smell, inability to taste, muscle weakness, tingling or numbness in the hands and feet, dizziness, confusion, delirium, seizures, and stroke.
In addition, some people have gastrointestinal symptoms, such as loss of appetite, nausea, vomiting, diarrhea, and abdominal pain or discomfort associated with COVID-19. The virus that causes COVID-19 has also been detected in stool, which reinforces the importance of hand washing after every visit to the bathroom and regularly disinfecting bathroom fixtures.
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How Long After I Start To Feel Better Will Be It Be Safe For Me To Go Back Out In Public Again
The most recent CDC guidance states that someone who has had COVID-19 can discontinue isolation once they have met the following criteria:
The CDC is no longer recommending a negative COVID-19 test before going back out in public.
Anyone who tested positive for COVID-19 but never experienced symptoms may discontinue isolation 10 days after they first tested positive for COVID-19.
Can A Person Who Has Been Infected With Coronavirus Get Infected Again
Natural immunity to COVID-19 is the protection that results from having been sick. But we don’t know how long natural immunity lasts, or how strong it is. We are learning that vaccination strengthens the natural immune response and reduces the risk that you will get infected again.
There have been confirmed cases of reinfection with COVID-19. In other words, a person got sick with COVID-19, recovered, and then became infected again. It’s also worth noting that someone who has been reinfected even someone with no symptoms has the potential to spread the virus to others.
We have also learned that people who have gotten sick with COVID-19 benefit from getting vaccinated. A study published in MMWR reported that people who were unvaccinated were about twice as likely to be reinfected as people who were fully vaccinated.
The bottom line? Get vaccinated whether or not youve already had COVID-19.
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Am I Still Infectious After Recovering
Probably to some extent, though the first batch of studies is far from conclusive as to how long it lasts. Provisional research from Germany has suggested that COVID-19 infectiousness in contrast to the 2003 SARS outbreak peaks early and that recovering patients with mild symptoms become low-risk around 10 days after they first fall ill. But another study, following four medical professionals treated at a Wuhan hospital, revealed that traces of the virus could persist in the body for up to two weeks after symptoms had vanished as the patients were no longer coughing or sneezing, the potential means of transmission were albeit much reduced. Less optimistic was a study published last week in The Lancet medical journal that showed the virus survived in one Chinese patients respiratory tract for 37 days well above the average of 24 days for those with critical disease status.
Myths And Facts About Covid
How do I know which COVID-19 vaccine information sources are accurate?
Accurate vaccine information is critical and can help stop common myths and rumors.
It can be difficult to know which sources of information you can trust. Before considering vaccine information on the Internet, check that the information comes from a credible source and is updated on a regular basis. Learn more about finding credible vaccine information.
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How Soon After I’m Infected With The New Coronavirus Will I Start To Be Contagious
The time from exposure to symptom onset is thought to be two to 14 days, though symptoms typically appear within four or five days after exposure.
We know that a person with COVID-19 may be contagious 48 hours before starting to experience symptoms. People may actually be most likely to spread the virus to others during the 48 hours before they start to experience symptoms.
For people who are not fully vaccinated, wearing masks, particularly indoors, can help reduce the risk that someone who is infected but not yet experiencing symptoms may unknowingly infect others. As of July 2021, the CDC is also advising people who are fully vaccinated to wear masks in public indoor places in areas of the country with substantial or high transmission of the virus.