A total of 7,521 people have been diagnosed with HIV since the early 1980’s according to the HSE.
HSE figures show that 168 people have been newly diagnosed with HIV since the start of 2015.
The number of people diagnosed is just under half of last years figures, 377 were diagnosed in 2014.
The research which was conducted by Health Protection Surveillance Centre showed that in 2014, 183 homosexual men accounted for 49% of cases while 125 heterosexual people accounted for 33% and 27 injecting drug users accounted for 7% of cases.
Last years figures showed an 11% increase since 2013, with 341 new cases identified.
A statement from HIV Ireland said: “Across Ireland, we need extra resources for testing services, for training and education work, for treatment and prevention work. As HIV figures increase we can’t afford to stand still”.