A new anti-malarial tablet for children claims to put parents' minds at ease about travelling to affected regions. Health editor Sarah Boseley reports.
"The best test is a blood test for antibodies to the parasite. If this comes back positive, then a single dose of a powerful drug called praziquantel is all that is needed."
I recommend either the concise Lonely Planet guides or the bulkier but more thorough Travellers' Health by Dr Richard Dawood (Oxford University Press, £14.99.
If there is a risk of total anaphylaxis, where the lungs swell up and fatality is a possibility, then you must get one of the adrenalin pens from your GP before you go. It would be advisable for you both to use one in a dummy run before an emergency.
"The oestradiol you are taking is a supplement to the hormones you will have lost. It is the same as HRT. The risk is not really any more than before so you should not worry..."
"He must take a good supply of inhalers. Your GP will be happy to prescribe enough for the trip. Inhalers have a long shelf life and don't need to be kept chilled. I also suggest that he takes some broad-spectrum antibiotics in case of a chest infection..."
"Travellers who are positive for HIV or in fact anyone who is immunosuppressed, such as post-transplant patients, should think long and hard as to where they go travelling..."