According to the Central geophysical Observatory named after Boris Sreznevsky, spring in Kiev began on February 10. However, to remove layers of warm clothing and hiding it in the distant wardrobe is not worth it, because getting sick in a seemingly warm spring weather will not be difficult.

Than you can get sick in the spring

Flu. Usually the symptoms appear suddenly in the form of a sharp increase in body temperature (over 38 °C), headache, muscle aches, throat, cough, or runny nose.

SARS caused due to any of the 200 types of different viruses. Symptoms appear gradually and intensify over time. Accompanied by a feeling of “weakness”, General weakness.

SARS and influenza
From open sources

The flu also appears gradually, it is always preceded by hypothermia. Characterized by fever and a slight deterioration of health.