Yes, he can go for css. Simultaneously he should get his medical test for checking for the disease, if at all he is having it, he should start taking medication simultaneously and it is hoped that till time the result of css comes out he will be fully recovered from the disease.

Kindly note that vaccination does not cure any disease, vaccines are in fact weak germs of the disease which are injected to persons for safety/precaution against any potential disease. Vaccine of Hepatitis C is only given to a person if his C test is confirmed negative otherwise vaccine can aggravate the disease instead of doing any good.

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'Thee woh ik shakhs kay tasawar saay - abb woh ranayee khayal kahaan'