![“Double Defense” Protocol Ranks as Top Story in 2016 double defense heartworm](https://goodnewsforpets.com/wp-content/uploads/2017/02/double-defense-feature-slider-1-351x185.png)
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“Double Defense” Protocol Ranks as Top Story in 2016
Groundbreaking research supports change in heartworm prevention to #FightHeartworm Two groundbreaking research studies last year led to a call for…