Reasons and symptoms.

As sources for infections are patients with the disease, animals, water, sea meal, snakes, and registered cases in workers with animals as farms, as close containing  with animals. As he enjoys a epithelia for breath top ways, thus a symptom of the disease is progressive rhinitis, after a cold with an abundant, thick, or transparent secretions, and they are faster damaging for low breath ways, causing pneumonia, or distress syndrome with a faster rising breath failure, cough, and bad feeling, and incubation stage are 3 days or ten and rare are 14 days. As in not complicated cases is till week, after recovering displaying. And if pneumonia displayed, thus disease having are 3 weeks and here is having intoxication, as swallow hurt, headache, weakness. As in not hard display, a fever is low till 37.8 C, with a strong mucus secretion and sub febrifuge temperature, nose from is mucus-secreting, cough, and tiredness.But in adults, babies disease displaying under a mask for rotavirus infection as belly aches, vomiting, diarrhea, and here need to see, that without a sneeze a corona not attacks.
As in a cure absence or weak immunity a corona virus infection leading to hard complications till a lethal result.