Here's two references. There are more if you'd like them. This is a well researched topic in Australia. HIV and Hep C are "notifiable" infections in most (all?) Australian states. New infections are reported to government health departments who monitor their spread. If someone was diagnosed with a blood borne virus from a community-acquired needlestick injury, it would be big news.
Community acquired needlestick injuries in non-health care workers presenting to an urban emergency department
Emerg Med (Fremantle). 2003 Oct-Dec;15(5-6):434-40
O'Leary FM, Green TC.
Department of Emergency Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.
OBJECTIVES: To review the epidemiology and demographics of community acquired needlestick injuries in non-health care workers attending an urban ED.
METHODS: A retrospective analysis of patients with needlestick injuries attending the Royal Prince Alfred Hospital from 1996 to 2001.
RESULTS: One hundred and twenty cases were reviewed. The most common mechanism of injury was exposure to discarded syringes (68%). Forty three (36%) injuries were work related. Twenty four (20%) were non-accidental. Ten (8%) patients received human immunodeficiency virus post exposure prophylaxis. There were no viral seroconversions in the patients with data available.
CONCLUSIONS: We have identified three groups, males, cleaners and police officers, who are at particular risk of injury. Community education is required so that medical assessment is sought early and to increase awareness of these injuries. The provision of post exposure prophylaxis requires individualized risk assessment, as only in a minority of cases is the source available for testing.
Blood-borne viruses and their survival in the environment: is public concern about community needlestick exposures justified?
Aust N Z J Public Health. 2003 Dec;27(6):602-7
Thompson SC, Boughton CR, Dore GJ.
Sexual Health and Blood-borne Virus Program, Communicable Diseases Control Branch, Department of Health, Perth, Western Australia
BACKGROUND: More than 30 million needle syringes are distributed per year in Australia as a component of harm-reduction strategies for injecting drug users (IDU). Discarded needle syringes create considerable anxiety within the community, but the extent of needlestick injuries and level of blood-borne virus transmission risk is unclear.
We have undertaken a review of studies of blood-borne virus survival as the basis for advice and management of community needlestick injuries.
METHODS: A Medline review of published articles on blood-borne virus survival and outcome from community injuries.
RESULTS: Hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus (HIV) can all survive outside the human body for several weeks, with virus survival influenced by virus titer, volume of blood, ambient temperature, exposure to sunlight and humidity.
HBV has the highest virus titers in untreated individuals and is viable for the most prolonged periods in needle syringes stored at room temperature. However, prevalence of HBV and HIV are only 1-2% within the Australian IDU population.
In contrast, prevalence of HCV is 50-60% among Australian IDUs and virus survival in needle syringes has been documented for prolonged periods. There have been no published cases of blood-borne virus transmission following community needlestick injury in Australia.
CONCLUSION: The risk of blood-borne virus transmission from syringes discarded in community settings appears to be very low. Despite this, procedures to systematically follow up individuals following significant needlestick exposures sustained in the community setting should be developed.