Enterovirus 

here are no drugs that can fight enterovirus, and all physicians can currently offer are drugs to ease the symptoms. If patients get plenty of rest and make sure they drink enough water and take in enough nutrients, their immune systems will naturally eliminate the virus. Since infants and toddlers have weak immune systems, particular care must be taken to keep them from contracting enterovirus, which might cause severe complications. 

Three Steps to Preventing Enterovirus
Strengthening immunity: Pay attention to your diet. Make sure to get good nutrition and sufficient exercise. 
Improving personal sanitation: Wash your hands carefully before eating and after using the toilet. After they return home, family members must wash their hands and change their clothes before picking up a baby or toddler. 
Improving environmental sanitation: Avoid crowded public places. Make sure that your living environment is clean and well ventilated.