Discipline to prevent colds 1 Common colds and influenza are respiratory infections caused by viruses. Although the common cold has little impact on the fetus, if the body temperature remains around 39 for a long time, it may also cause fetal malformations. Especially for influenza, not only can the virus deform the embryo or fetus, but the high fever and toxicity of the virus can stimulate uterine contractions and lead to miscarriage. Therefore, you should especially avoid going to public places during the first trimester, especially in the cold season, and avoid contact with cold patients in your daily life. Commandment 2: Don’t take medicine randomly