Can Vaccinated People Transmit COVID-19 to Others? – Health Essentials from Cleveland Clinic

Weve heard it all since the pandemic started lemon juicecan kill the coronavirus,masks dont work, if you already had COVID-19you cant get it againor that the vaccines approved for emergency use willchange your DNAor put a tracking device in your body.

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Yikes.

Its almost like we need a strong dose of something to knock out all of the misinformation. But despite all the myths and urban legends,about half of the U.S. population is fully vaccinated.

Wonderful news, right?

Well, not to some. Vaccinated people are up against a new set of myths theyre literally magnetic or theyre going to shed vaccine components and alter the DNA of unvaccinated people. And despite the extra layer of protection, they still have to grapple with the same pandemic realities as everyone else.

So, what do vaccinated people need to do to stay safe? And is it still possible for them to spread COVID-19 to others? Infectious disease specialistLyssette Cardona, MD, answers those questions and covers why vaccination is still one of our best weapons in the fight against COVID-19.

As restrictions and mask mandates are dropped around the county, people who are fully vaccinated might be feeling the return-to-normal fantasy. But Dr. Cardona warns that now still isnt the time to let your guard down. While the vaccines are potent, theres still a chance that you could become infected.

Dr. Cardona explains.

Fully vaccinated means that you completed a COVID-19 vaccine series as recommended for the best protection against severe complications such as hospitalizations and/or death. No vaccine offers 100% protection against illness, yet it does give you a better chance to fight off the infectious consequences of being exposed to the SARS-CoV2 virus.

While it is possible,Dr. Cardona says that the ability to transmit COVID-19 may occur at a lower rate. She adds that this could also be a reality for people who dont have a good immune response to vaccines.

The elderly, those with immune or chronic health conditions or those with underlying health disorders may not have the best protective response to vaccines, such as the COVID-19 vaccines. We are still collecting data and doing ongoing research about the vaccine responses in these vulnerable populations.

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.

The jury is still out on that one. According to Dr. Cardona and the Centers for Disease Control and Prevention (CDC), theexact timeframe for protection is unknownat 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 for the benefit of our communities.

On June 7, the CDC issued a press release regarding their study of the effectiveness of vaccines in fully vaccinated people. The study found that the mRNA COVID-19 vaccines authorized by the Food and Drug Administration (FDA) ( Pfizer-BioNTechs and Modernas)reduced the risk of infection by 91% for fully vaccinated people. The study also is among the first to show that mRNA vaccination benefits people who get COVID-19 despite being fully vaccinated (14 or more days after dose two) or partially vaccinated (14 or more days after dose one to 13 days after dose two).

The results of this study also suggest that fully or partially vaccinated people who become infected with COVID-19 might be less likely to spread the virus to others. With fully or partially vaccinated study participants, the virus was 40% less detectable in their noses. It was also detected in six fewer days (i.e., viral shedding) as compared to those who werent vaccinated when they became infected.

In addition, people who were partially or fully vaccinated were 66% less likely to test positive for the SARS-CoV-2 infection for more than one week in comparison to those who were unvaccinated. The CDC adds that while these indicators are not a direct measure of a persons ability to spread the virus, they have been associated with a reduced spread of other viruses like varicella (chickenpox) and influenza (flu).

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 (positivity of testing) 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.

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Can Vaccinated People Transmit COVID-19 to Others? - Health Essentials from Cleveland Clinic