EMA antimicrobial categories in dogs and cats
Cat with a bite abscess that has already been drained. The owner asks for the long-acting antibiotic injection (cefovecin) to avoid giving tablets.
Which statement about the EMA classification (categories A–D) is correct?
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A. Cefovecin (a third-generation cephalosporin) and fluoroquinolones are category B: they should only be used when no effective category C or D alternative exists, ideally based on susceptibility testing
Correct. Category B ('Restrict') includes fluoroquinolones, third- and fourth-generation cephalosporins and polymyxins, which are critically important in human medicine. Ease of administration alone does not justify their use.
B. Cefovecin is category D, first-line because of its convenient administration
Third-generation cephalosporins are in category B. In addition, an injection that persists for weeks maintains low concentrations for a long time, which favours resistance selection.
C. Amoxicillin-clavulanate is category D and doxycycline is category B
In practice it is the other way round: amoxicillin-clavulanate is category C ('Caution') and doxycycline is category D ('Prudence'), as is amoxicillin without an inhibitor.
D. Category A contains the first-line antibiotics in veterinary medicine
Category A ('Avoid') contains antimicrobials not authorised in veterinary medicine and reserved for human medicine, such as carbapenems; it is the opposite of first-line.
lightbulb Key takeaway
Practical order: D (prudence) as first line when effective, C (caution) if there is no alternative in D, B (restrict) only when justified by susceptibility testing and A (avoid) never. Many well-drained feline abscesses do not even need an antibiotic if there is no fever or cellulitis.
References: EMA Categorisation of antibiotics for use in animals (AMEG) 2019
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.