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Most Common Subtype In Western Hemisphere

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Tests for HIV Subtype O (GROUP O, Subtype O, 2010)

Nine months ago I had a sexual encounter with a West Africa prostitute whilst abroad. This encounter involved me receiving unprotected oral sex (flaccid), followed by masturbation and come. There was no penetration, however there was alcohol...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
...Hello Steve,Your HIV-acquisition is extremely low. I would very strongly doubt you have subtype O infection, even though it is endemic in West Africa. Should you continue to worry, subtype O screening is now available (see Read more »

Case numbers for rare subtypes (TESTING FOR SUB-TYPE O)

Dr Bob,I'm a frequent follower of your forum and enjoy your wit, humor, consistent honest answers. ... Read more »

Test for sub-type o and new sub-types?

Dear Dr,Could you pls tell me:1. In Washington D.C, which hospital could offer test for sub-type O... Read more »
The Body PRO

HIV-1 Superinfection: AE Subtype Supplanted by B Subtype

... HIV-1 Superinfection: AE Subtype Supplanted by B Subtype (ThOrA1381) Authored by S. Jost, M.C. Bernard, L. Kaiser, S. Yerly, B. Hirschel, L. Goh, L. Perrin Read more »
U.S. Centers for Disease Control and Prevention

Impact of HIV-1 Subtype on Women Receiving Single Dose Nevirapine Prophylaxis to Prevent HIV-1 Vertical Transmission

...Little is known about the relationship between HIV-1 subtype (clade) and HIV-1 transmission or pathogenesis. Subtypes A and D account for most HIV-1 infections in Uganda. The HIV Network Read more »
U.S. Centers for Disease Control and Prevention

Evidence for Onward Transmission of HIV-1 Non-B Subtype Strains in the United Kingdom

...heterosexual sex in sub-Saharan Africa. In the current study, the researchers looked for evidence of onward transmission of non-B subtypes in an ethnically diverse cohort of HIV-1-infected patients in South London. In-house enzyme-linked... Read more »
U.S. Centers for Disease Control and Prevention

HIV-1 Subtype Linked to Transmission in Argentina

...studied 35 gay HIV-positive men and 175 heterosexual HIV-positive men and women. They found that 91 percent of gay men had HIV-1 subtype B, while 75 percent of heterosexuals had subtype F, with many of those patients appearing to have a mixture... Read more »
Connect With Others

Subtype "O"

Posted by Anonymous, 1 Reply
...Hello to all, single a question the subtype "O" is detected by tests ELISA made in Europe. Thank you very much Read more »

Does virus change subtypes within body?

Posted by Anonymous, 1 Reply
...Does anyone know if you are infected with one subtype, say subtype B, can it evolve into another subtype within your body? I guess the question, once subtype B, always subtype B? Read more »


Posted by Anonymous
...I have some questions regarding subtypes. First of all, i keep hearing that current antibody test pick up most subtypes but not O and N. The N that it cannot pick up Read more »


Posted by SteveR, 1 Reply
...Recently faith123 asked about subtypes, and some others have expressed concerns about infection with obscure subtypes and whether tests could detect them. I found Read more »