Ringworm Roundup 1: Overview

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Managing ringworm in homeless pet populations is easier than you think, but only when you have your eyes open, and you're equipped with a plan and the right... see moretools. Even outbreaks can be tamed with a careful, systematic approach. Anyone who wants to prevent ringworm from impacting their animal populations - especially veterinarians, vet techs, animal shelter and rescue group leaders, line staff and foster caregivers - will benefit from this session, given by Dr. Sandra Newbury, National Shelter Medicine Extension Veterinarian for the UC Davis Koret Shelter Medicine Program. This presentation is part of the University of Florida's Maddie's Shelter Medicine Program track at the 2013 No More Homeless Pets National Conference.

Presenter: Sandra Newbury, DVM
Date: October 11, 2013
Venue: No More Homeless Pets National Conference
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2. The reason that it is difficult to design drugs that will kill the ringworm fungus without killing us is because of the:

Toxicity to humans just handling these types of drugs.

Lack of technology to develop these types of drugs.

Similarities between mammalian cells and fungal cells.

Dissimilarities between mammalian cells and fungal cells.

None of the above.

4. Which of the following statements should be part of the screening protocol for ringworm in an animal shelter environment?

Start with a screening exam at admission, including a Wood’s Lamp exam.

If there are fluorescing lesions, then perform a direct (microscopic) exam.

If there are non-fluorescing lesions, then do a fungal culture.

If there are no lesions, then release the animal for adoption.

All of the above.

5. The ringworm glow of the hair from a Wood's Lamp is:

Apple-green and occasionally red-white in color, involving the whole hair shaft (especially the base).

Apple-green and occasionally blue-white in color, involving the whole hair shaft (especially the base).

Apple-green and occasionally blue-white in color, involving only the tip of the hair shaft.

Apple-green and occasionally red-white in color, involving the whole hair shaft (especially the tip).

Forest-green and occasionally blue-white in color, involving only the tip of the hair shaft.

6. A positive direct (microscopic) exam of Wood's Lamp positive hair is indicated by:

Tiny dots (spores) embedded inside of the hair.

Squiggle shapes (gametes) going all the way around the hair.

Squiggle shapes (gametes) embedded inside of the hair.

Tiny dots (spores) going all the way around the hair.

Tiny dots (spores) unassociated with the hair.

7. Which of the following statements about performing fungal cultures is false?

Brush the whole cat vigorously from nose to toes with a toothbrush; if there are lesions, brush them last.

When inoculating culture media, hold the culture plates upside-down, gently stab the tips of the toothbrush into the media and cover the whole plate in a consistent pattern.

Slant-style culture plates work just as well as petri dish-style culture plates.

Incubate culture plates at a temperature slightly warmer than room temperature (78-80 ◦F).

Fungal cultures should be treated as a biohazard for disposal.

9. Which of the following statements about the P Scoring System is true?

It is based on the number of colonies that grew on the culture plate.

The score strongly influences treatment decisions.

It helps define cases and provides a complete and consistent sampling method.

It must be used in conjunction with a thorough check for lesions.

All of the above.

10. Treatment for ringworm involves:

Topical treatment with lime sulfur twice weekly, until 2 negative cultures are taken 1 week apart.

Oral/systemic treatment with Itraconazole for 21 days.

Cage cleaning with lime sulfur spray.

All of the above.

A and B.

11. Which of the following statements about fungal culture interpretation is false?

If the culture media turns red, it only means “Look at me!”—a microscopic exam of the growth needs to be done.

Only Microsporum species turn the DTM fungal culture media red.

Pigmented colonies are non-pathogenic contaminants.

Contaminants are often common environmental organisms.

All suspect fungal colonies should be examined microscopically to identify the organism.