What is "sought hospital care"? To get some Vitamin C or get some serious surgery? (In China people go to hospital more often I guess, as people tend to deal with ailments relying on doctors a lot, rather than letting it go by itself.)
Nothing told.
Anyway assuming it's at least not a lie, "sought hospital care" would mean it's not just a trivial cold. Again, I'll be waiting for more details, I just think Occam's razor is converging here, and there are more hurdles to dance around with the other explanations.