I've made a search on BBC-related sites, and it seems that the only
similar usage is coming from non-native speakers. Thus avoid it.
ward can be a transitive verb, but the meaning 1 here isn't the same as in your sentence (wrt to hospitals).
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ward
transitive verb
1 : to keep watch over
: keep in safety or custody
: serve as guard, guardian, or protector for <a warden's business is to
ward the people who are put in his charge -- Phil Stong> <the bald mountains that
ward the Cap Rock -- Margaret Cousins>
2 a : to fend off (a blow or weapon)
: PARRY -- usually used with
off <shields his face with one arm ... to
ward off a blow -- Inez Karma & Gilbert Millstein>
b : to turn aside (something threatening or harmful)
: DEFLECT -- usually used with
off <a magic charm to
ward off evil -- M.J.Herskovits> <our nation has
warded off all enemies -- D.D.Eisenhower>

http://unabridged.merriam-webster.com
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