Hi
Sorry for the delay and you may have made your decision by now. Essentially the kittens have had a form of cat flu, its really common in a stray/rescue cat population. They may have recovered for now with good care and treatment but yes they can/will carry the virus and there is a risk it could flare up at any time when they are stressed in the future. Accepting that risk, it doesnt mean they couldnt be kept healthy or healthy enough to be imported to another country so its not a huge deal in that sense. I have seen many kittens that have been ill with cat flu when young but have recovered and maintained good health over time especially when good veterinary care, parasite control and vaccinations have been given. If you plan to take them with you, health checks are carried out just before import and if needed, quarantine, plus vaccinations against diseases such as rabies are needed. Each country is different in their requirements. It is someting you could check up in advance, for the UK its DEFRA that sets the rules. Its expensive for you to do this but it sounds like you are serious about the commitment.
Cathy Wickenden BVet Med MRCVS
Barton Lodge Veterinary Centre
1 Midland Road, Hemel Hempstead, Hertfordshire, HP2 5BH
Tel: 01442 216048 24 hours
[
www.bartonlodgevets.co.uk]