Remember the last time you had unprotected sex? : What if the guy had HIV? Would you assume you might now be HIV positive, because you assumed he was HIV negative? Assume nothing / designed and produced by Spencer Landau ; photography by Peter Dazeley.

Licence: In copyright

Credit: Remember the last time you had unprotected sex? : What if the guy had HIV? Would you assume you might now be HIV positive, because you assumed he was HIV negative? Assume nothing / designed and produced by Spencer Landau ; photography by Peter Dazeley. Source: Wellcome Collection.