english: They didn't know what  they were dealing with, and to make it  even more complicated, the virus itself was causing a symptom, a type of a presentation that wasn't classical of the disease.
non_english: Вони навіть не знали, з чим мають справу, і ще гірше, що сам вірус спричиняв симптоми, які не були типові для звичайної хвороби.