to quickly identify those who were infected

[learning101]

hi all,
"The immediate lockdown of Wuhan and their ability to quickly identify those who were infected were parts of the measures taken by China to contain the disease."
I am undecisive if the word 'were" is necessary in the context. Thank you.

 

[tedmc]

Re: participial phrase

Who were is optional.
What has the sentence got to do with participial phrase?

 

[Rover_KE]

learning101, please note that I have changed your thread title.

Extract from the Posting Guidelines:

'Thread titles should include all or part of the word/phrase being discussed.'