Brown soft scale

[Nicolasdperez]

Hello,

I recently purchased a somewhat sickly paphiopedilum on eBay. One of the yellow leaves had turned brown, but I noticed the formation of scab structures underneath the leaf. I took it to my school where I put it under the microscope and identified it as brown soft scale. I am not familiar with the pest and am worried it may spread to other plants and cause harm. Should I treat the whole plant as infected?

Thank you for your time and help,

Nicolas D. Perez