Modern shelter medicine ringworm protocols have transformed outcomes from near-universal euthanasia to high cure rates. Understanding these protocols helps advocates and caregivers.
Modern ringworm treatment protocols represent a triumph of shelter medicine that has transformed the welfare and survival outcomes of affected cats. Before these protocols were developed and adopted, ringworm-positive cats in shelters were almost automatically euthanized — a welfare and survival catastrophe for a treatable condition. The welfare costs of ringworm itself are real: the fungal infection causes pruritus, hair loss, and skin inflammation. Treatment imposes additional welfare costs through repeated lime sulfur dips (which cats dislike) and the stress of isolation during the infectious period. However, these welfare costs are time-limited and far outweighed by the welfare benefit of survival and cure. Foster-based treatment that removes cats from shelter stress during the treatment period significantly improves both welfare and cure rates.