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Table 1 Differentiation of HIV-1 and HIV-2, based on the New York State Department of Health AIDS Institute

From: An unexpected diagnosis of human immunodeficiency virus-2 infection in an overseas visitor: a case report

1

Originated or have travelled to HIV-2 endemic area

2

Received medical care, injections, immunisations, phlebotomy, surgery or blood products in an HIV-2 endemic area

3

Sexual or needle sharing contact with persons who are infected with HIV-2 or from a HIV-2 endemic area

4

Born to a mother with HIV-2 infection

5

Opportunistic infections or other clinical symptoms of HIV/AIDS but tested negative or indeterminate for HIV-1

6

Multiple HIV-1 indeterminate antibody test results

7

Unusual pattern/indeterminate HIV-1 Western Blot

8

Confirmed diagnosis of HIV-1 but undetectable viral load incompatible with clinical or immunological status

  1. http://www.hivguidelines.org/clinical-guidelines/adults/human-immunodeficiency-virus-type-2-hiv-2/