Mal/Phish-A detected in old backup files - safe to leave?

Question

Sophos has detected Mal/Phish-A in several of my older Mac OS Time Machine backup files. I have run the auto-removal which has not been successful and it recommends manual removal. As this would involve delving into backup files would it be safe to leave them where there are? This virus has not been detected in my current Mac OS hard drive files.

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AimanAnsari · Accepted Answer

Hello Peter, 
 Yes it would be safe to leave them where they are only if you are not going to use that backup from Time Machine, and eventually, as new backups are created, old ones ( containing detections ) will be deleted. 
 https://community.sophos.com/products/f/17/t/9873 
 https://community.sophos.com/kb/en-us/118117 
 You can use the above links to cleanup automatically or manually. 
 Let us know if you have any further queries. 
 
 Regards,