An indication of the probable cause of infection by the HIV virus or other sexually transmitted disease.
Classification:
| a. | Homosexually acquired | 
| b. | Heterosexually acquired | 
| c. | Injected drug use | 
| d. | Injected drug use and sexual intercourse between men | 
| e. | Contaminated blood factor | 
| f. | Contaminated tissue transfer | 
| g. | Mother and child infected | 
| h. | Mother and child indeterminate for children less than 18 months when last tested positive for HIV - 1 antibody and without evidence of HIV - 1 infection | 
| i. | Other/undetermined | 
This attribute is also known by these names:
| Context | Alias | 
|---|---|
| plural | INFECTION PROBABLE SOURCES |