I have just had my flu jab, but I also have a cold sore starting, for which I would normally take Aciclovir tablets. As they are anti-viral, I'm not sure if they would prevent the flu vaccine working properly. I asked the nurse, but she didn't know either and just suggested I read the packet info (but it doesn't refer to vaccinations at all).
I don't want a cold sore, especially at this time of year. If I don't take the tablets, it will last at least 10 days, I will look like a medieval peasant and there will be no point dressing up for any parties
.
On the other hand, I had pneumonia earlier this year and I don't want any more illnesses, if they can be prevented.