You have to wait 3 months since the first day of symptoms for vaccination. The rising titre is agood thing and this means antibody is building. Its difficult to say how many days the antibodies will last. It differs. But you may think it should atleast be there for the next three - eight months for the strain you were infected with. The last line is important. For further information, get a consultantaion
Answered2021-06-07 09:23:57
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