Bryant
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« on: November 11, 2009, 02:24:10 pm » |
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Okay, it seems what she's prescribing is what was theorized above concerning the potential that Ivomec may shorten the adult life cycle, while basically keeping the dog from getting worse by killing any present microfilaria.
Microfilaria are the juvenile form of adult worms. Microfilaria will NOT develop into adult worms within the dog they are present in. In order for the life cycle to be completed, and a dog to be infected with adult worms microfilaria must be picked up by a mosquito biting the dog. During the next 10 or so days, the microfilaria mature (in the mosquito) to the infective larval stage. When this mosquito bites another dog, they are deposited. It then takes about six months for the infective microfilaria to develop into adult worms. This process will not happen in a single dog, and will not happen without a mosquito.
Presence of microfilaria will not show up on a heartworm test...only adult worms. Ivomec kills both the juvenile and infective stages of microfilaria.
Although uncommon, puppies less than a year can be infected with adult worms.
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