Thanks for the link to the article.
I read it.
It's essentially an article to prove that muscle necrosis could be consistently reproduced and, confirming that the disease has an infectious etiology.
They succeeded in this trial. Which means they could reproduce the disease, and confirm it is infectious.
There is nothing in this paper to suggest there is a cure.
The paper however, does mention that there is a non-inflammatory and an inflammatory versions of Muscular Necrosis.
The non-inflammatory condition possibly caused by environmental changes such as sudden changes in temperature, salinity or dissolved oxygen.
The inflammatory condition being caused by a pathogen (bacterial or viral).
Although they did not see any casualties in their short 4-5 week study, this is quite different in the shrimp farms where casualties are seen. And certainly different to the dwarf shrimps we keep. Being smaller then commercially farmed shrimps, the dwarf shrimps will see casualties in a shorter timespan.
Unfortunately, this article adds nothing to what we already know.
There is no cure yet. When the issue is visible, it is already usually too advanced for a full recovery. Not impossible, but certainly difficult.
Isolate the infected shrimp, and correct any environmental issues like temperature, water parameters, and oxygen levels - this still remains as the only possible action.