Realative is out of hospital and has Lyme Disease
Final update and thanks again for the helpful posts. My relative is out of hospital after 3 weeks amd still not feeling anywhere near 100% healthy or fit. Diagnosis is now Lyme Disease and treatement seems to be live with it and manage it. It was apparently common in the New Forest but the ticks have edged North over the years and it can be caught well North of the original known area of possible infection.