Health & Fit Some States Are Reporting‘Breakthrough’ Cases of COVID-19—Here’s What That Means
Fauci Issues COVID Vaccine Allergy Warning
"What the Pfizer people are saying is that if you have a history of a severe allergic reaction, you should not take this vaccine," said Fauci.In clinical trials, the vaccine was tested on 44,000 people and found to be safe and 95 percent effective. It has been authorized for emergency use and is rolling out to healthcare workers across the country. Pfizer had previously warned that people who've experienced severe allergic reactions, like anaphylaxis—a swelling of the throat that impairs breathing and can be fatal if not treated—may want to avoid it.
The Minnesota Department of Health announced on March 2 that it is investigating several“breakthrough” cases of COVID-19 that have occurred in the state.
Officials said in athat the organization, along with the Centers for Disease Control and Prevention (CDC), is investigating positive coronavirus infections in people who were“appropriately vaccinated” against the virus and later developed COVID-19.
There have been 14 breakthrough cases in the state, according to, and all were confirmed in healthcare workers who are routinely tested for work. Every patient had either mild or no symptoms.
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Oregon has also reported breakthrough cases. The Oregon Health Authority shared onin mid-February that it has detected four cases of people who tested positive for COVID-19 at least 14 days after completing their vaccinations. The health department said that some people had no symptoms, while others had .
Back up: What is a breakthrough COVID-19 case?
According to the Oregon Health Authority, a breakthrough case is defined as someone who has detectable levels of SARS-CoV-2, the, in their body at least 14 days after they’ve been . This means they received both doses of either the Pfizer-BioNTech or Moderna vaccine, as was just by the FDA on February 27.
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In an exclusive interview with Meet The Press, U.S. Surgeon-General nominee, Dr. Vivek Murthy says it is more realistic to assume that it will be closer "to mid summer or early fall when the vaccine makes its way to the general population."
“With a breakthrough case, you may develop an infection after you’ve been vaccinated—and at least two weeks have passed since you were fully vaccinated,” says, an infectious disease specialist and professor at the Vanderbilt University School of Medicine.
The two-week marker is important, says infectious disease expert, senior scholar at the Johns Hopkins Center for Health Security—your body should have enough time to develop to SARS-CoV-2 after that timeframe. Before then, you won’t necessarily have the built-up immunity you need to fight off an infection.“Cases that occur before [the two-week mark] are not breakthrough cases,” Dr. Adalja says.
Why do breakthrough COVID-19 cases happen?
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“These vaccines that we’re using are fabulous but they’re not perfect,” Dr. Schaffner says.“At best, they’re 95% effective in preventing serious illness, but minor illnesses can occur.”
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, professor and chief of infectious disease at the University at Buffalo in New York, says that experts“expect” that some people will get infected after being fully vaccinated.“What we’re interested in is whether these cases are mild, symptomatic, or asymptomatic,” he notes.
Dr. Adalja points out that“no vaccine has 100% efficacy,” and that breakthrough cases are usually mild and“associated with low viral loads which means these individuals may not even be contagious.”
Think of it this way: Breakthrough cases of COVID-19 can be compared to what someone whomight experience.“Some people can still get the flu after being vaccinated against , but almost invariably that illness will not cause hospitalization,” Dr. Schaffner says. (Worth noting: With an effectiveness of around 95%, the Pfizer and Moderna vaccines are thought to be much more reliable at preventing illness than the annual flu shot, which reduces the risk of flu by , per the CDC.)
More research is needed to understand if more infectiousmay be behind the breakthrough cases.“It is crucial to study breakthrough cases to understand their severity, their contagiousness, and what role variants may be playing,” Dr. Adalja says.
Dr. Fauci Predicts When We'll Return to Normal
"Together with a vaccine, I believe in 2021 we will see this behind us. It’s not going to happen in the first few months. If we do it correctly, hopefully, as we get into the end of the summer, the beginning of the fall of 2021, we can start to approach some degree of normality.""Well, the pandemic emerged from the standpoint of a societal issue at the worst possible time," said Dr. Fauci, when asked to look back on this "tough year," "because anybody who views what's going on throughout the world, but particularly in our own country, there's a great deal of divisiveness in the country.
What should you do if you think you might have COVID-19 after being fully vaccinated?
The CDC hasn’t released official guidance on this, but Dr. Russo recommends following standard protocol. That means calling your doctor, getting tested for the virus, quarantining until you get your results, and isolating for 10 days from the day you developed symptoms if you have a positive result.
If you haven’t been vaccinated against COVID-19, experts strongly recommend that you get your dose as soon as you can or. Even though the available vaccines do not offer“perfect” perfection, Dr. Russo says, they so far do an“outstanding” job at preventing severe cases of COVID-19.
This article is accurate as of press time. However, as the COVID-19 pandemic rapidly evolves and the scientific community’s understanding of the novel coronavirus develops, some of the information may have changed since it was last updated. While we aim to keep all of our stories up to date, please visit online resources provided by the, , and your to stay informed on the latest news. Always talk to your doctor for professional medical advice.
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As Americans continue to get vaccinated, the number of daily COVID-19 infections continues to rise. Who is driving this latest coronavirus surge? During Friday's White House COVID-19 Response Team Briefing, Dr. Rochelle Walensky, Director of the Centers for Disease Control and Prevention, revealed the answer. Read on to find out who you are most likely to catch COVID from—and to ensure your health and the health of others, don't miss these SignsDr. Walensky started off by revealing the latest statistics. On Thursday there were 74,860 new cases of COVID-19 with the seven day average of new cases a little more than 64,000 per day— up about 2 percent from the prior seven day period.