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HIV types & strains
Nov 3, 2004

I'm counfused about HIV types and/or strains. I have been recently diagnosed with HIV. I asked my physician which type of HIV I had and he said WILDTYPE and that it was not resistant to any medications. But from all my research I can't find any information on this, only on type 1 and 2. Can you tell me the difference between the 2 types? Are there more than 2 types? and is Wildtype a real strain or type of HIV?

Response from Dr. Holodniy

There are two major types of HIV, HIV-1 and HIV-2. Within the HIV-1 family there are multiple subtypes or clades, mostly with alphabetic names like subtype B or C. Subtype B is the most common form in the US. Wildtype refers to a patient viral strain that does not have any drug resistance mutations associated with it. Thus, this is a somewhat different term or concept. You can have wildtype virus with any subtype.



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