Hepatitis B immune status of staff in smaller acute healthcare facilities.

Objective: To determine the proportion of staff employed in smaller Victorian public acute healthcare facilities with evidence of immunity to hepatitis B. Methods: For optimal long-term immunity, a completed hepatitis B vaccination course and post vaccination hepatitis B surface antibody (anti-HBs) level ≥10 mIU/mL is desirable for all high-risk staff employed in healthcare facilities. For the financial years 2016/17–2019/20, a standardised surveillance module developed by the Victorian Healthcare Associated Infection Surveillance System (VICNISS) Coordinating Centre was completed by the smaller Victorian public acute healthcare facilities (individual hospitals with <100 acute care beds or their multi-site health service). Staff were assessed as having evidence or no evidence of optimal immunity to hepatitis B. Those without optimal evidence were sub-classified as 'incomplete vaccination course', 'no serology', 'contraindicated', 'non-responder', 'declined' or 'unknown'. Data were analysed to determine trends over time for healthcare facilities that participated more than once. Results: A total of 88 healthcare facilities reported hepatitis B immunity status of high-risk (Category A) staff (n = 29 920) at least once over 5 years; 55 healthcare facilities reported more than once. The aggregate proportion with evidence of optimal immunity was 66.3%. Healthcare facilities with 100–199 Category A staff employed reported the lowest evidence of optimal immunity (59.6%). Of all Category A staff with no evidence of optimal immunity, the majority had 'unknown' status (19.8%), with only 0.6% overall who declined vaccination. Conclusions: Our study found evidence of optimal staff hepatitis B immunity in only two-thirds of Category A staff working in surveyed healthcare facilities. What is known about the topic? Non-immune healthcare staff are at risk of acquiring hepatitis B in the event of an occupational exposure to blood-borne pathogens. What does this paper add? An update about the proportion of staff employed in healthcare facilities with evidence of optimal long-term immunity to hepatitis B. What are the implications for practitioners? To mitigate risk, enhanced immunisation policies and programs are needed to actively support healthcare staff hepatitis B vaccination and serological testing; this includes documented follow up of those staff whose immune status is currently reported as unknown. [ABSTRACT FROM AUTHOR]