how many types of diseases can humans get?

Question: how many types of diseases can humans get?
- Keywords:
  disease,
  diseases,
  human,
  humans,
  illness,
  sickness,
  virus
Asked by xoil to Kath on 13 Jun 2011.
- Kath O'Reilly answered on 13 Jun 2011:
  
  Hey, gosh what a question! I don’t know but a lot. Maybe have a think yourself of the number of times you have needed to take time off school because you’re ill. Then multiply that by a lot! The health protection agency looks at the diseases people get in the UK (http://www.hpa.org.uk/). Have a look there – there are so many! I always think if I have a ‘favourite disease’ when I look at that website…

Question: how many types of diseases can humans get?