you are a nurse serving as a medical volunteer in a refugee camp. due to extreme poverty, political instability, and displacement, most individuals at the camp have not received any preventative medical care, including vaccinations. while providing care to a young woman in about the fourth month of pregnancy, she mentions that several children, including her toddler, suffered from a mild illness last month. her toddler had a low fever, a runny nose, and a rash that started on his face then moved downward. the illness resolved quickly in all the children. what illness might the children have had and why should/shoudn't vou be concerned?