Do we use up our vaccine antibodies each time we are exposed to covid?
I ask this because I have recently been exposed to covid on a daily basis whilst caring for an elderly relative. I managed to stay negative for a whole week before eventually testing positive. Then I went down hill rapidly. There is no doubt I was exposed for days, because I had my relative practically coughing in my face for days. It felt as though my vaccine antibodies (last booster 4 months ago) were keeping the virus at bay until all my antibodies were used up and then I just caught it big time. In fact I was really quite ill. Worse than my elderly relative. The WHO has this to say about vaccine lifespan…
“Immunity may reduce faster in people who are older or who have underlying medical conditions, or who have a high level of exposure to the virus”
It is this last part that I find interesting and is quite important for carers who may be exposed to covid over an extended period.