In reply to Vaccinate Now

I have been told by my vet that vaccinating against EI will only make the problem worse because the vaccine does not stop the horse from contracting the flu. So when they do, the symptoms are milder and therefore harder to detect which makes it harder to contain horses that might be missed. That is why "they" don't want us to vaccinate.
To me that makes sense.

But I have a question;
For the horses that are in lockdown for instance Morgan Park, can the horses that are recovering from the flu get re-infected by the other horses that are still in the beginning stages? As they are still all confined together.
Jane