Karen has asthma, as do one of her brothers and her mother. to reduce the risk asthma for her newborn, she should:

The best prophylaxis is to eliminate the allergen that causes asthma.

Explanation:

You can try a few ways to prevent allergy and asthma symptoms in your child:

   1. Dust and vacuum your home often to get rid of dust, pollen, and pet dander.

   2. Wash your child's sheets and blankets in hot water at least once a week.

   3. Clean up any mold that's collected in damp areas of your home, like the bathroom.

   4. If your child is allergic to pollen, keep him indoors with the windows closed on days when the pollen count is high.