Aren't there two different kinds of HIV?

Aren't there two different kinds of HIV? How do I know what I should be tested for?

The two known types of HIV are HIV-1 and HIV-2. In the United States and Europe, the overwhelming majority of HIV cases involve HIV-1. HIV-2 infections are predominantly found in West African nations. The first case of HIV-2 was discovered in the United States in 1987. Since then only 79 people with HIV-2 infections have been identified in the United States. While the CDC does not recommend routine screening for HIV-2, when someone tests for HIV-1 using ELISA/Western blot tests, there is a 60% to 90% chance that HIV-2 will be detected if it is present.

Not every test will automatically include testing for HIV-2. Anyone who thinks there's a possibility they have been exposed to HIV-2 and/or any of HIV's more rare subtypes should mention this when being tested. Among those for whom HIV-2 testing is indicated are those with sex partners from a country where HIV-2 is prevalent or people with an illness that indicate underlying HIV infection, such as an opportunistic infection, but whose HIV-1 test result was negative