However, as HIV-2 and group O infections are extremely rare in most countries, routine screening programs might not be designed to test for them. Anyone who believes they may have contracted HIV-2, HIV-1 group O or one of the rarer subtypes of group M should seek expert advice.“quote from“http://www.avert.org/hiv-types.htm”
and some article shows that there may be false negative result of type O
so in case of that,should I test more times using EIA test? and if virus mutation happens,can EIA test it too?
"routine screening programs might not be designed to test for them." how could I know if the test is designed to that?