Not so much your immune system shutting down- actually the opposite- as expected from a vaccine it was the sound of your immune system doing it’s job. Early versions of the Australian vaccine used protein from the HIV virus which posed no risk to the health of subjects nor risk of HIV infection or transmission. The proteins did cause an immune response to the HIV proteins which could trigger false positives on an HIV test, somewhat similar to how certain foods can trigger a false positive on certain drug tests or some medicines can cause false positives on pregnancy tests.
Also- you wouldn’t necessarily need the latter more than former if you HAD HIV as medical breakthroughs in HIV treatment have created medicines which block the transmission of the HIV positive to partners through sexual contact. Not relevant since the vaccine didn’t cause HIV, but a fun fact since HIV and sexual transmission were alluded to.
Of your immune system
Shutting down
Also- you wouldn’t necessarily need the latter more than former if you HAD HIV as medical breakthroughs in HIV treatment have created medicines which block the transmission of the HIV positive to partners through sexual contact. Not relevant since the vaccine didn’t cause HIV, but a fun fact since HIV and sexual transmission were alluded to.