Drug all jockeys catching a new type of fever (9)

I believe the answer is:

glandular

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'type of fever' is the definition.
(I've seen this before)

'drug all jockeys catching a' is the wordplay.
'jockeys' is an anagram indicator.
'catching' indicates putting letters inside.
'a' becomes 'an'.
'drug'+'all'='drugall'
'drugall' with letters rearranged gives 'gldular'.
'gldular' enclosing 'an' is 'GLANDULAR'.

'new' acts as a link.
This may not be correct. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for glandular that I've seen before include "Kind of fever" , "Sort of fever" , "regarding body parts" , "Type of fever" .)

I've seen this clue in The Times.

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