My gut feeling is to say to avoid anywhere where there will be crowds of people coughing and sneezing germs towards you!
This is based on being told this by my Oncologist when I was on chemo because my immune system was weakened by the chemo and there was a risk of contracting flu which could have killed me off.
On the other hand, if you feel it might be your last chance in a while to cheer on your team in an important fixture and you need an afternoon away from worrying about cancer, wrap up well and enjoy the match!
