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is not yet curable.But as you see CD4 count should be maintained at higher levels to prevent secondary infections.
He should be started on with anitivirals to reduce viral load
As you have been in the best institution of India , please follow the treatment as prescribed strictly and give him very good nutritious food rich in vitamins
Please see that he does not catch any secondary infection.This way the morbidity can be reduced .
Hope I answered your question.If you need more information feel free to mail me.