From: Listeria monocytogenes associated kerato-conjunctivitis in four horses in Norway
Case No | Day after initial examination | Clinical diagnoses | Bacterial growth after culturinga | Topical medication (frequency)b | Systemic medication (days) |
---|---|---|---|---|---|
1 | 1 | Conjunctivitis, moderate central superficial keratitis1 | Micrococcus spp.—moderate L. monocytogenes—sparse | Chloramphenicol (TID – QID) | – |
15 | Unchanged1 | L. monocytogenes—sparse | Ampicillin, Gentamicin (QID) Diclofenac (QID) | Procaine penicillin, Gentamicin (5 days) | |
55 | No symptoms2 |  | – | – | |
69 | Conjunctivitis, moderate central superficial keratitis1 | Normal flora dominated by Micrococcus spp. and L. monocytogenes | Ciprofloxacin (QID) Diclofenac (QID) | – | |
114 | Unchanged1 | L. monocytogenes abundant before scraping/very sparse after | Penicillin-Na, Gentamicin (CF) | Procaine penicillin (10Â days) Vedaprofen (X days) | |
128 | Central superficial keratitis improved1 | No listerial growth (selective enrichment) | Gentamicin (CF) | – | |
140 | Conjunctivitis, moderate central superficial keratitis1 |  | Penicillin-Na, Gentamicin (CF) | – | |
150 (released against medical advice) | central superficial keratitis improved1 |  | Oxytetracyclin - PolymyxinB (TID) | – | |
178 (euthanized—unrelated reason) | Unchanged2 |  |  |  | |
2 | 1 | Conjunctivitis, mild–moderate central superficial keratitis1 | L. monocytogenes—sparse | Oxytetracyclin - PolymyxinB (QID ), Idoxuridine (QID), Diclofenac (TID) | – |
12 | Mild keratitis1 |  | Oxytetracyclin - PolymyxinB (QID 7 days), Idoxuridine (QID–7 days) | – | |
29 | Conjunctivitis, mild–moderate central superficial keratitis, mild anterior uveitis1 | L. monocytogenes—moderate (pure culture) | Oxytetracyclin - PolymyxinB (QID), Atropin (1 single drop), Idoxuridine QID, Diclofenac TID | – | |
45 | No symptoms2 |  | – | – | |
76 | Conjunctivitis, mild–moderate central superficial keratitis1 |  | Ciprofloxacin (QID 28 days ) | – | |
2200 | No further symptoms2 |  |  | – | |
3 | 1 | Conjunctivitis, mild central superficial keratitis1 | L. monocytogenes—moderate (pure culture) | Ciprofloxacin (QID) Diclofenac (BID-TID) | –  |
30 | Conjunctivitis2 |  | Ciprofloxacin (QID) | – | |
44 | None2 |  | – | – | |
48 | Conjunctivitis, mild central superficial keratitis1 | L. monocytogenes—sparse (pure culture) | Chloramphenicol (Eyedrops 5x/day Ointment at night 42 days) | – | |
90 | None2 | Â | Â | Â | |
104 | Conjunctivitis, mild–moderate central superficial keratitis1 | L. monocytogenes—very sparse (pure culture) | Chloramphenicol (CF) | Procaine penicillin (10 days) | |
118 | Mild keratitis1 |  | Chloramphenicol (QID – ointment 14 days) | – | |
162 | No symptoms2 | Â | Â | Â | |
4 | 1 | Mild central superficial keratitis1 |  | Neomycin - Polymyxin B-Dexamethasone (TID 14 days) | – |
16 | Conjunctivitis2 |  | Dexamethasone (TID) | – | |
28 | Conjunctivitis, mild–moderate central superficial keratitis (ulcerative), mild anterior uveitis1 | Sparse, mixed bacterial growth dominated by L. monocytogenes | Oxytetracyclin-PolymyxinB (TID 5 days) Atropin (1 single drop) Oxytetracyclin - PolymyxinB (TID 7 days) | Flunixin (5 days) | |
45 | None1 | No bacterial growth | Â | Â | |
160 | No symptoms2 | Â | Â | Â |