Convincing end users that they need to be doing regular virus/malware scan can be like telling yourself you need to eat more vegetables. You know you should, but if you don’t listen to your own advice, how can you expect them to listen?
The problem is understanding the issue; how good vegetable are for you and how important regular scans are. Like you, I get lots of email articles on every topic related to IT. I just got one from Malwarebytes that does a pretty good job explaining the symptoms of being infected. It might just help your end users understand this problem better. And maybe they will do more scans.
If you’re not familiar with Malwarebytes, you probably should be. They have a free product that does a pretty good job of cleaning things up that your regular anti-virus application might miss. It’s a handy tool to have in your utility belt.