@engineer,
Thanks, engineer.
Where I live, 'warded' is always used by our reporters to the exclusion of 'hospitalised". I have never seen 'hospitalised' used by them. It is interesting that
Oxford Advanced Dictionary, whose seventh edition was published in 2009 does not define 'warded' as stated above.
The New Oxford Dictionary of English (published in 1998) is an updated version, and it would seem that it has introduced new words not found in
Oxford Advanced Dictionary, which was published in 2009, as stated above.
It's strange that native speakers do not use 'warded' the way our reporters do.