However, starting prevention without testing can be harmful, because once the heartworms reach a certain point in development, the killing
off of the microfilaria in combination with juvenile or adult heartworm in the system can be damaging to your dog's cardiovascular system.
Answer: That is not ideal - if s / he is positive, especially with a heavy load, it can cause a massive die -
off of microfilaria / worms and be very detrimental to his / her health.
Not exact matches
When the mosquito takes a blood meal
off of one
of these animals, it picks up the
microfilaria along with the blood.