Tried it last year when my cherries had it. Lost over 90% to it. Treatment seemed to work to begin with using weak solution of WS1, but losses were very rapid.
Not good reading, going to swing by Maidenhead Aquatics after work (only place local that will still be open) and see what they have.
Plan of attack at the minute is quarantine all showing signs of being affected and salt bath them, just unsure whether to dose the main tank lightly as well just in case as it's likely to spread, with a berried female i'm wondering what is worse at the minute