Welcome! I am Dr. Altman, a licensed veterinarian and happy to answer your questions today.
I am so sorry that you all are in this predicament and that no one has assisted you yet today
I am terribly worried about the puppy being exposed to Parvo now having bowel movements that are bloody because one vaccination
will not prevent a puppy from getting Parvo Virus. I would very strongly urge a veterinary er visit to test her for Parvo and rule this out with her exposure.
As for the other puppy yes I would advise vaccinating this puppy to minimize risk of exposure but until the full series of vaccinations are completed (8,12, 16 weeks) the risk of Parvo Virus is still a concern and unfortunately Pitbulls are more susceptible to Parvo than other breeds.
Because the ill puppy vomited up worms there is a possibility this is related to the type of worm she vomited up but if she continues to show signs of vomiting there is a risk in trying to treat her orally with any dewormers. I definitely would advise taking photos of the worms or bringing them in and having the er diagnose the type of worm and then prescribe an appropriate dewormer for both new puppies
I hope this information makes sense but I am terribly worried about the one exposed to Parvo even with having one vaccination because she is still at high risk for Parvo Virus
Please let me know how else I can assist you both today. You are definitely in my thoughts
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