As someone who has used TA for years to search and research, but has recently joined, I'm amazed how people don't use the search facility and just post a question straight away.
I'm amazed the old hands (forgive the old) don't get fed up with answering the same questions.
So if you'll forgive my presumption I've set up an inside page to address one of the commonest general questions on here. I've raided previous threads for this, so I hope you don't mind if I've used your stuff.
Please feel free to update / amend.
If its any use I will do the same for vaccinations and malaria tabs when I get time