Isopathy for autism

Samuel Hahnemann, the founder of homeopathy, was well aware of isopathy, but quite biased against classical isopathy and commented negatively about it in his sixth edition of Organon:
A third mode of employing medicines in diseases has been attempted to be created by means of Isopathy, as it is called – that is to say, a method of curing a given disease by the same contagious principle that produces it. But even granting this could be done, yet, after all, seeing that the virus is given to the patient highly potentized, and consequently, in an altered condition, the cure is affected only by opposing a simillimum to a simillimum.

To attempt to cure by means of the very same morbific potency (per Idem) contradicts all normal human understanding and hence all experience. Those who first brought Isopathy to notice, probably thought of the benefit which mankind received from cowpox vaccination by which the vaccinated individual is protected against future cowpox infection and as it were cured in advance. But both, cowpox and smallpox are only similar, in no way the same disease. In many respects they differ, namely in the more rapid course and mildness of cowpox and especially in this, that is never contagious to man by more nearness. Universal vaccination put an end to all epidemics of that deadly fearful smallpox to such an extent that the present generation does no longer possess a clear conception of the former frightful smallpox plague.
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Moreover, in this way, undoubtedly, certain diseases peculiar to animals may give us remedies and thus happily enlarge our stock of homoeopathic remedies.
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But to use a human morbific matter (a Psorin taken from the itch in man) as a remedy for the same itch or for evils arisen therefrom is – ? (untranslatable)
Nothing can result from this but trouble and aggravation of the disease.

What to do in MMR vaccinosis, especially autism?Which homeopathic remedy will cover the symptoms?