Toxocara canis

例句：

1. 1. The dog was infected with Toxocara canis, which can cause serious health problems.
   这只狗感染了弓形虫，这可能导致严重的健康问题。
2. 2.Due to the risk of Toxocara canis infection, it is important for pregnant women to avoid contact with cats and dogs.
   由于弓形虫感染的风险，孕妇应避免与猫和狗接触。
3. 3. Researchers have discovered a new strain of Toxocara canis that could be used as a vaccine against the disease.
   研究人员发现了一种新的弓形虫菌株，可能被用作该疾病的疫苗。