Will getting a booster shot make me test positive for COVID? How long does immunity last?

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DETROIT – Because the coronavirus pandemic started, Dr. Frank McGeorge has been conserving viewers up-to-date and knowledgeable on all fronts. He’s been answering your questions concerning the vaccine, the vaccination course of and extra.

Learn: Extra solutions to questions on coronavirus


I’m planning to get my booster this Sunday and journey to Canada by automobile on Nov. 4. Which means I’ve to take the COVID check on Nov. 2. Will the booster shot have an effect on the check?

Not one of the vaccines will trigger a COVID check to develop into optimistic.

A pharmacist advised my daughter that since she and her household all had COVID-19 final December, they have been secure from getting once more for 2 years. Is that true?

We don’t know. Whereas we imagine having been contaminated offers some immunity, it seems to range from individual to individual in how efficient it’s and the way lengthy it lasts. Suggesting a security vary of two years is full hypothesis – which is why getting vaccinated continues to be advisable.

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If I had the Johnson and Johnson vaccine and wish to have a Moderna increase, will I get the complete dose or the half dose Moderna booster? Looks as if I ought to get the complete dose.

Individuals who acquired the single-dose Johnson & Johnson vaccine are eligible for a booster shot of any of the three vaccines, two months after their Johnson & Johnson dose. In the event you selected to get Moderna as your booster you’ll obtain the half dose, as a result of that’s the designated booster dose.

Is there truly totally different dosing for a 3rd dose and for a booster dose? Or are all third photographs the identical dosage simply with totally different names?

The time period third dose vs. booster dose do have totally different meanings after we’re speaking concerning the two-dose mRNA vaccines. A 3rd dose is given to complement the preliminary response in immunocompromised folks and it’s given 28 days after the second dose.

A booster dose is given to increase safety that’s decreased over time in these with regular immune perform. For the mRNA vaccines, it’s given at the very least six months after finishing the preliminary collection. Within the case of Moderna, a 3rd dose is a full dose — whereas the booster is a half dose.

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One other level that was lately clarified by the CDC is that immunocompromised individuals who acquired the third dose must also obtain a fourth booster dose six months after finishing the third dose. That’s as a result of they typically aren’t getting the identical degree of response to the vaccine as others who aren’t immunocompromised.


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