But experts recommend against it.
Why Would Delaying a Vaccine Dose Be Beneficial?
Seeing an increased antibody response after delaying the second dose of a vaccine is not a new discovery.

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The response probably happens because the body’sB cellsand/orT cellscontinue to develop or mature in their response.
How Are Multiple-Dose Vaccines Scheduled?
“Whereas they would more easily remember to come back in 3 to 4 weeks.”
What’s the Best Dosing Schedule for COVID Shots?
check that that you do not miss or delay your appointment.
The response using the current dosing interval is potent and robust, Wilson says.
Liu adds that if COVID-19 was a low-risk disease, people might feel safer waiting longer between doses.
Sticking to the Schedule
Why do COVID vaccines have the dosing schedules that they do?
The protection after the second dose even using the short interval is quite good, Wilson says.
There just really isn’t much bang for your buck for waiting longer.
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Department of Health and Social Care.Most vulnerable offered second dose of COVID-19 vaccine earlier to help protect against variants.