Key figures as of December 31, 2003, since the start of surveillance: - 13 occupational HIV seroconversions among healthcare workers, the most recent of which occurred in 1997 (and 32 suspected infections), 13 needle stick injuries involved, including 12 following intravenous or intra-arterial procedures, and 4 failures of antiretroviral prophylaxis. - 52 occupational HCV seroconversions among healthcare workers (between 2 and 5 per year since 1997), 48 needle stick injuries (including 11 not related to a hollow needle used for intravascular procedures), 3 cuts, and 1 blood contact on broken skin. (R.A.)