context: For humans, a bite of an ordinary viper is considered potentially dangerous, but it is extremely rare to kill [7]. For example, in the UK between 1876 and 2005, only 14 deaths were recorded, the last of which occurred in 1975 (a five-year-old child died from a bite) [14]. About 70% of those bitten either do not experience any symptoms at all, or they feel burning pain directly in the area of ​​the bite. Often around the wound, redness and swelling develop - hemorrhagic edema. With a more severe degree of intoxication within 15-30 minutes dizziness, nausea, vomiting, diarrhea, blanching of the skin, increased sweating, chills, tachycardia are possible. Finally, with especially high sensitivity, loss of consciousness, facial swelling, a significant drop in blood pressure, excessive bleeding (DIC), renal failure, convulsive or coma can occur [15] [16]. In the vast majority of cases, the consequences of a bite disappear after 2-4 days [8], but can last for a longer period up to a year [3]. In particular, improper self-treatment can lead to complications [7] [8].
question: How dangerous are snakes to humans?
answers.text: bite of an ordinary viper is considered potentially dangerous, but it is extremely rare to kill