CBIC exam — which domains are most heavily tested and is the APIC Text enough?
I've been working in infection prevention for 4 years and finally decided to sit for the CBIC. I'm about 6 weeks into studying and using the APIC Text as my primary resource, supplemented by the CBIC practice questions from their website. My practice scores are hovering around 68-72%, which feels borderline given the 75% passing score I've seen mentioned.
The surveillance and epidemiology domain is where I'm strongest — that maps pretty directly to my day job. Where I'm struggling is the infectious disease section, specifically organism-specific transmission and isolation precaution nuances. I'll know the general principle but then miss on the specific exception or edge case.
I'm putting in about 1.5 hours per night, 5 days a week. My plan is to spend the next 2 weeks purely on domains where I'm scoring below 65% and then do full-length practice runs the final week before test day. Has anyone used the Certification Board's official prep course? I can't tell if it's worth the cost at this stage.
Test is scheduled for 7 weeks from now. Still feeling like I might be cutting it close on the clinical portions, but I'm not sure if that's realistic anxiety or just nerves.
The APIC Text is solid but some of the practice questions on the CBIC site are written differently than the actual exam. I found third-party question banks that matched the real exam style much better — the CBIC exam tends to favor application-based questions over pure recall, which catches a lot of people off guard.
I passed on my first attempt with about 10 weeks of prep at similar hours to yours. The official prep course wasn't available when I tested so I can't speak to it directly, but I don't think you need it if you're already using the APIC Text plus practice questions. At 7 weeks out you're in a reasonable spot.
Infectious disease transmission was hard for me too. I made flashcards specifically for organism-specific isolation categories — which organisms require both contact and droplet versus just one. Repetition helped more than re-reading the text because those distinctions are easy to blur under pressure.
One thing that helped me was going through the CDC guidelines for major HAI categories — CLABSI, CAUTI, SSI — since the exam references those frameworks directly. A lot of the surveillance questions I missed were ones where I'd learned a hospital-specific protocol instead of the CDC definition.
Congrats on getting to this point, and honestly 68-72% six weeks out isn't bad at all. I passed in March after scoring right around where you are. The one thing that genuinely changed my prep was stopping the cover-to-cover APIC Text reading and reorganizing everything around the exam content outline instead. Surveillance and epi investigation questions were everywhere on my exam, way more than I expected, and same with identifying infectious disease processes. I'd been spending too much time on employee health and management stuff that barely showed up.
The APIC Text is enough for content, but it's a reference book, not a study guide, so it won't tell you where the weight is. What I did was print the content outline, went domain by domain, and drilled practice questions until I could explain why every wrong answer was wrong. That last part matters more than the score itself. My practice numbers only jumped to the low 80s in the final two weeks, so don't panic yet. You've got real work experience and that carries you further on this exam than you'd think.