Definition that contains first trimester
- rubella a contagious viral disease that is a milder form of measles lasting three or four days; can be damaging to a fetus during the first trimester
- german measles a contagious viral disease that is a milder form of measles lasting three or four days; can be damaging to a fetus during the first trimester
- three-day measles a contagious viral disease that is a milder form of measles lasting three or four days; can be damaging to a fetus during the first trimester
- epidemic roseola a contagious viral disease that is a milder form of measles lasting three or four days; can be damaging to a fetus during the first trimester