Skipped preventatives, now dog has worms

My vet said that it looked like roundworms but that using the heartworm preventative that I have should have prevented that.
Medscape

Roundworm Transmission From Dogs to Humans: Risk and Prevention

Four days ago we rescued a 6-month-old puppy from a shelter in the southeast of the United States. My vet says that she has roundworm and warned me that my kids (ages 3-8 years) could get visceral ...
NBC Los Angeles on MSN

Raccoon roundworm eggs detected in a dog in San Fernando Valley

Public health officials warned dog owners Friday to be on alert after a dog in the San Fernando Valley was found to have ...

Brain-infecting 'raccoon roundworm' parasite found in dog in San Fernando Valley

A dog in the San Fernando Valley was found to have Baylisascaris, or raccoon roundworm, eggs in its system during a routine ...
Gizmodo

Here’s Where Your Dog Is Most Likely to Catch Roundworms at the Park

Doggy park lovers, beware: Researchers in Ireland say they’ve pinpointed the park hot spots where roundworms are most likely to infect our precious pups. Scientists at Trinity College in Ireland led ...