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actually both mcafee as well as avg anti virus are not that good options to consider. But, the user has to select between these two anti virus i.e. mcafee or avg antivirus only, then mcafee is a better choice. Jhonson Perry

Yes, it is very essential to have antivirus in your system specially if you are connecting it with internet. the virus and malware etc are spreading at an indefinite rate today and hence it is essential to have a good antivirus installed in your pc or laptop to avoid it from being attacked by these. Kaspersky is one good antivirus.

There is necessary any king of anti virus but don`t choose norton it is not the best choice for you and everyone. So i can say that norton anti virus is unnecessary :) Please choose some other more better antivirus like nod32 or avira there are many of other better anti viruses. John Doubtson