Board certification in veterinary microbiology runs through the American College of Veterinary Microbiologists (ACVM), the AVMA-recognized college for virology, immunology, bacteriology/mycology and parasitology.
The path runs from the veterinary degree through an ACVM-approved residency to the college's own certification process — AVMA counted 407 active ACVM diplomates as of December 31, 2025.
Here is the path, where the field's work actually happens, what the pay data does and doesn't show, and where the jobs are.
What a veterinary microbiologist does
A veterinary microbiologist is a board-certified veterinarian whose specialty is the organism rather than the organ.
The credential is Diplomate of the American College of Veterinary Microbiologists, and the college is AVMA-recognized for exactly four specialties: virology, immunology, bacteriology/mycology and parasitology.
Read that list as a job description: these are organism disciplines — identifying viruses, bacteria, fungi and parasites, and the immune system's response to them.
The four disciplines are the whole college, and the college has history: ACVM describes itself as celebrating over 50 years as an AVMA-recognized veterinary specialty organization.
The map it sits on is much larger — AVMA recognizes 22 veterinary specialty organizations comprising 48 distinct specialties — and the veterinary specialties index works from that same AVMA list.
The nearest page to this one on that map is the other laboratory specialty: veterinary pathology, where ACVP certifies veterinary anatomic pathologists and veterinary clinical pathologists — the two specialties AVMA lists under it.
Pathology and microbiology share the laboratory instinct, but they are separate colleges with separate training and examinations — the pathology page covers the ACVP route, and this one stays on ACVM.
The usual path to a specialty credential — after the veterinary degree, an internship, then a residency, then the college's certifying examination — is what how specialization works covers in detail; the rest of this page stays on what is specific to microbiology.
Training path: internship, residency, boards
Three parts of the path are fixed.
The credential is a veterinary-specialist credential — AVMA counts ACVM's diplomates in its national table of board-certified veterinary specialists — so the veterinary degree is the foundation.
Training happens in programs ACVM itself approves.
And certification is the college's own process, with its own published requirements.
What this page deliberately does not do is restate the requirement details: eligibility rules, exam format and program length are ACVM's to publish and revise, and the college's own certification documents are the operative source.
Here is the path as the sources on file fix it:
The veterinary degree
ACVM boards veterinarians — its 407 active diplomates sit inside AVMA's count of active board-certified diplomates of AVMA-recognized veterinary specialty organizations — so the DVM is the floor the whole ladder stands on. The rungs above it are the ones the specialization guide covers.An approved ACVM residency
ACVM lists approved residency programs — among them the University of Missouri, Colorado State University, Texas A&M (diagnostic microbiology), Washington State, University of Pennsylvania, University of Illinois, Université de Montréal, UPEI (parasitology) and AniCura Veterinary Laboratory in Freiburg, Germany. The list carries its own as-of date, and ACVM's residency page is the live version — but read it as more than an application list, because the sites themselves tell you where the specialty trains: universities and veterinary laboratories, several of them diagnostic.The college's certification process
Eligibility rules, examination format and program length are the college's own to set, and its certification pages are the operative source for the current version. Confirm every requirement with ACVM directly before you build a multi-year plan around this specialty — that step applies to any board, and it is the one instruction on this page that does not change.The two details to confirm first
Whether an internship comes before the residency, and whether a given program recruits through the match, are program-level details to confirm rather than assume. The mechanics of how the matching system works across specialties — timelines, rank lists, results — are covered in the residency match.
ACVM's own documents are the operative rules
How many there are and where they work
The field is small, and the count is exact: AVMA counted 407 active ACVM diplomates as of December 31, 2025.
The by-specialty rows run virology 220, bacteriology/mycology 203, immunology 185 and parasitology 63 — the rows add to more than 407 because some diplomates hold more than one specialty.
For scale, AVMA counted 20,636 active board-certified diplomates across all of its recognized specialty organizations as of December 31, 2025 — ACVM is a small college inside that total.
Where the work happens is the part the residency list answers best.
The programs ACVM approves sit in universities and veterinary laboratories — Texas A&M's program is titled diagnostic microbiology outright, and one approved site is a veterinary laboratory in Germany.
Read that training footprint as a map of where the work sits: bench-first, in laboratory settings — a read drawn from the program list, not from a published job count.
What the count does not tell you: AVMA's table counts diplomates, not positions, and our research found no published count of microbiology openings to plan against.
The settings specialists work in overall — and what each one demands and offers — are broken down in where specialists work.
Pay compared with GP
Start with the honest part: our research found no public source that publishes a veterinary-microbiology-specific salary.
BLS tracks all veterinarians as one occupation and does not split specialist pay out, and our research found no public pay scale from any specialty college.
An exact "veterinary microbiologist salary" figure in a listicle or a recruiting pitch is not a number we could trace to a national dataset, and this page won't add another to the pile.
What can be said with authority is the whole-occupation picture.
In the BLS OEWS May 2025 data for veterinarians (SOC 29-1131), the 10th percentile earned $73,920, the 25th $101,460, the median $130,100, the 75th $166,120 and the 90th $215,700.
That spread is the whole occupation — every veterinarian BLS counts — not a measure of what the ACVM credential adds.
One neighboring number needs its label before you quote it.
BLS also tracks microbiologists as a separate, general-science occupation: 2025 median pay of $87,990, with a bachelor's degree as typical entry education.
That is not a veterinary figure — ACVM diplomates are veterinarians, counted in the veterinarian occupation, while the microbiologists series covers the lab-science career that does not require the DVM.
Read it as the benchmark for the non-veterinary laboratory career, not as what the veterinary credential pays.
So compare with GP pay by structure rather than a number.
The training runs past the veterinary degree — an approved residency, then certification — and our research found no national figure for the premium the credential adds.
Specialist vs GP earnings walks through what each existing source actually measures, where a premium shows up indirectly, and how to price a specialty offer for yourself.
Why there is no ACVM pay figure on this page
Is it worth the training time?
The case for is the work itself.
If the part of veterinary medicine you would do for free is the organism — the culture, the titer, the parasite count — this is the specialty that spends its training years and its career there.
The credential has history behind it: over 50 years as an AVMA-recognized specialty organization, four disciplines to certify in, and a field of 407 active diplomates.
The case against is arithmetic with gaps.
Training runs past the DVM in the approved programs ACVM lists — university departments and veterinary laboratories; the certification requirements are the college's to publish and revise, so confirm length and format with ACVM before you commit years to them; and our research found no published pay premium to point a source at.
None of that makes the specialty a bad bet — it makes it a bet you place with the college's current documents in hand, not a listicle's.
A practical decision rule: choose microbiology if the laboratory is the destination, not a fallback from clinical work — the approved training sites are universities and veterinary laboratories, and the four disciplines are organism-focused.
And if the underlying question is residency in general rather than microbiology specifically, is a residency worth the opportunity cost takes up the residency question in general, and what interns and residents are paid covers the training years' paycheck.
Specialty jobs
The employer map starts where the training sites are: the approved programs sit in universities and veterinary laboratories, and the four disciplines give a job search its keywords — virology, immunology, bacteriology/mycology, parasitology.
During training, ACVM's approved-residency list is the entry map.
After boards, the practical channel is the open market.
On this site there is no separate microbiology queue: laboratory and specialist roles post inside the veterinarian job listings, so run the search there rather than waiting for a microbiologist-specific board.
The sizing numbers to work with are the ones above — 407 active diplomates, and no count of openings our research found published — which is another way of saying: don't build the plan on demand figures nobody can point to.
Reading this from the employer side?
The mirror guide to hiring a veterinarian covers screening, offers and onboarding for practices.