Hello, Thanks for writing to us,
There is very less possibility that you might get contracted with HIV in this case because the chance that the two of your fellow travelers being positive is very less. On top of everything, you ingesting that insignificant amount of blood with unknown viral load adds to your advantage. To begin with I would like to tell you the ways of getting infected with HIV:
- First and the fore most is unprotected sexual intercourse with an HIV infected individual. This is the most rapid route of spreading infection.
- Needle stick injury with HIV infected blood.
- Needle sharing habits in drug abusers usually also associated with Hepatitis B.
- Blood transfusion with infected or (HIV unscreened) blood. Very rare but high chances of carrying if done.
- Mother to fetus (baby) transmission.
Other highly unusual and very very rare causes are by spilling of blood drops into the eyes, here the virus can easily penetrate the mucous membrane, although it depends on the viral load.
Transmission of the disease by ingestion of infected blood is unlikely, though it is possible if there were cuts or breeches in the mucous membrane of the mouth.
It is preferred that you get a screening test done. If still in doubt you can take the prophylactic treatment after consulting your physican.
Hope this is of some help.