I would need more information to guide you further.
'Hospital did a scope and said there are pockets of pus'. Is it chest or some other part of the body? What were the blood test
Many hospitals don't have Pediatric Surgeon or full fledged Pediatric services and I am presuming that could be the reason for transferring your child to another hospital.
IF you can revert with more details, we would endeavour to answer more specifically.
Dr Tejas Shah