Testing Dogs for Screw Worms

A reader wrote us an urgent question about testing her dog for screw worms (also spelled as “screwworms”). She is from the U.S., but has been living in Cameroon for the last year, and she brought her dog with her. She recently found out that she needs to test her dog for screw worms (or, again, screwworms) before it can return with her to the U.S. Her return flight is only a couple of weeks away, although this is actually okay because her dog must be tested within five days of her departure. What the reader requested of us is a little unusual – she didn’t ask about how to go about testing her dog for screw worms, but rather for “any information” we can send to her so that she can take this information to a veterinarian, where a screw-worm test can be performed. On a previous visit to the vet, she was told that they hadn’t heard of any sort of test for screw worms, and hence her request for information.

Unfortunately, we don’t really know what to tell our reader other than that we feel for her and hope she can find a solution to her problem. We don’t know what kind of information we could send her that will help with her situation. Any vet should certainly know about screw worm infections, and they should also know about getting rid of screw worms. This is especially true in areas of the world like Africa, where screw worms have not been eradicated. Perhaps these articles will be of assistance to our reader. There is also a good guide to screw worms and the myiasis they cause published by the Center for Food Security and Public Health at Iowa State University. Any of these articles or guides will at least convey what screw worms are. Not surprisingly, given their source, they are all written in English, and perhaps the reader’s vet doesn’t understand English, and that’s obviously something we can’t do anything about. (English and French are official languages in Cameroon, but French is more widely understood. For what it’s worth, the french term for screw worm is evidently lucilie bouchère, but, not being French speakers ourselves, don’t quote us on this.) One final thing we’ll mention is that we wonder if an institution like the World Organization for Animal Health could be of any assistance. Maybe they have helped with similar problems before.

UPDATE! All About Worms has partnered with HealthLabs so that
you can get tested for parasites at a fully-qualified lab near you,
no doctor's visit required
! Check it out at!

As we conclude, it is worth briefly mentioning (even though this is explained in greater detail in our other articles) that screw worms infect open wounds, generally in animals because humans tend to dress their wounds. Thus, the reader should check her dog for wounds and perhaps direct her vet’s attention to these wounds as well. Again, a vet should be able to see if anything is wrong (like if the wound is oozing a reddish-brown excretion) and treat the wound if necessary. Unfortunately, that is about all we can say, but hopefully we’ve at least pointed our reader in the direction of some helpful articles.

No Paywall Here!
All About Worms is and always has been a free resource. We don't hide our articles behind a paywall, or make you give us your email address, or restrict the number of articles you can read in a month if you don't give us money. That said, it does cost us money to pay our research authors, and to run and maintain the site, so if something you read here was helpful or useful, won't you consider donating something to help keep All About Worms free?
Click for amount options
Other Amount:
What info did we provide for you today?:
AAW - Testing Dogs for Screw Worms
Article Name
AAW - Testing Dogs for Screw Worms
A reader wrote us an urgent question about testing her dog for screw worms (also spelled as "screwworms").


  1. Brittany

    I am viewing this website because I have a similar issue. I’ve been living in China with my dog and would like to bring her back to the United States, but my vet is telling me that I need to take my dog to a laboratory to verify that she does not have screw worms. I’m trying to explain that it’s unnecessary, and she just needs a physical examination to show that she obviously doesn’t have this parasite.

    The worm causes a visible infestation, so why and how would they need to do laboratory tests on my healthy dog that doesn’t even have a scratch on her?

    So basically, my Chinese veterinarian either doesn’t know what to do to test for it, or they don’t want to be liable and are recommending me to a laboratory.

    —-My question—-
    If an American veterinarian was asked to inspect an animal for screw worms and confirm that it does not have the worm, how would the examination be conducted?
    Are there laboratory tests that can be used to identify the presence of the worms in an animals body?

  2. Diana Lynn Iguet

    Hi just want to know if screw worm test is now available in the philippines?please need your help im migrating in the US and need to bring my pet shih tzu..thank you and God bless..

Leave a Comment (but to submit a question please use the "Submit a Question" link above; we can't respond to questions posted as a comment)

Menu / Search

All About Worms