Measles is an acute airborne viral disease, which is also highly contagious. Persons who have not been vaccinated and have not contracted measles before can become infected in almost 100% of cases, regardless of age. The first signs of the disease appear on the 9-11th day after contraction, and these include a fever - 38 °C or higher, malaise, cough and inflammation of the conjunctiva. On the 13-14th day, rashes start appearing behind the ears and on the cheeks, which then progress to the rest of the body in phases. Within a day, the rash spreads to the entire face and neck, on the second day - to the chest and hands, and on the third day, it covers the entire body and limbs. Measles is dangerous due to its serious complications that may cause death: pneumonia, brain damage, blindness and deafness, multiple sclerosis, or kidney damage.