In the summer of 2013, because the rainfall in southern Shaanxi was greater than in previous years, the vegetation grew more luxuriantly that year, and in the summer, there were many more wasps than in previous years.
More than 1,600 people were stung by wasps in Ankang, Shangluo and Hanzhong, of whom more than 200 were stung to the hospital and more than forty were stung to death.
The fact that Zou Zongyou and his old partner Huang Liangqiu in Yibin, Sichuan Province, were stung by a swarm of horses (a type of wasp) in the middle of the road has attracted the attention of many people.
The wasp (wasp) is poisonous, and it will hurt and become red and swollen when stung, but why can it directly sting people to death?
In fact, for the phenomenon of wasp stinging dead people, as long as we understand a little about the lethality of some poisons, it is easy to understand.
For example, China's most venomous snake, the silver ring snake, its average amount of detoxification per time is 4.6 mg, but for people, the lethal amount is only 1 mg is enough.
The body of the horse wasp is very small, so its venom glands can not carry and expel too much bee venom.
In this way, it is basically not difficult for us to understand that assuming that the bee venom of the horse bee is as strong as the venom of the snake of the silver ring snake, then a person who is stung by three or two horse bees is not painful under normal circumstances.
Because the amount of wasp venom that stings into the human body has not yet reached a lethal amount of 1 milligram, and to achieve this amount, it will definitely require a swarm of wasps to attack it.
Stung by multiple wasps at the same time to a certain number of times, it is estimated that it is about thirty or forty times, bee venom has accumulated in the human body to a certain amount, can be simply understood as reaching that lethal amount, so that people may be poisoned to death, and this is a necessary condition for wasp stinging people to die.
The venom of the wasp is different from the snake venom of the silver ring snake, and the venom of the wasp contains some biological amines that can cause pain, which are the reasons for the obvious pain after being stung.
These foreign biological amines cause the body's immune system to be regarded as "extremely dangerous molecules", and then produce a transitional immune response, which is called allergies, so after people are stung by wasps, the reason for the redness and swelling in the place where they are stung is also here.
The red and swollen place is like a small nail that has been burned into it, it will be very painful, very uncomfortable, but the pain and discomfort are only a skin feeling, and the real fatal thing is the reaction on some organs in the body.
In addition to some toxins such as biological amines, there are mandala toxins and some biological enzymes, such as phospholipase, which have the effect on hemolysis, bleeding and poisoning nerves, which will cause strong damage to the human heart muscle, tubules and glomeruli.
Therefore, in the case of being stung by multiple wasps continuously, it may damage the human nervous system, and even die of multi-organ failure.
So, after people are stung by wasps, what should they generally do?
Although washing with soap, or applying some cooling oil and other operations may be faster to remove bee venom, in fact, directly using ice to apply to the location of the wound is the best way to deal with it, because washing with soap, or applying cooling oil may speed up the spread of toxins in the wound area, but also increase the area of pain.
So, what if we can correctly deal with the relationship between humans and wasps?
Wasps generally don't sting people easily, and if they want to sting, it must be that they think you pose a threat to them, such as a hive that is close to them, or accidentally scares them.
All wasps emit a chemical odor called pheromones, which, although not smellible, can be used by wasps to communicate.
If one wasp emits this pheromone because it is threatened by you, the other wasps will think that you are a threat to them and will launch a swarm attack on you.
So, sometimes, even if you only see a wasp, don't bully it easily, just ignore it quietly, otherwise if it brings a large group of rescuers, then you will be miserable.
Don't think that if it brings in the rescuers, you will be able to escape, because the wasp can reach a speed of 40 kilometers per hour, which means that basically no one can run to win it.
Of course, in addition to not actively provoking them, because they are extremely sensitive to smell, such as if you spray too much perfume, or use some deodorant or something, they may also be unaccustomed to those types of smell, and then they will treat you as a threat, and then you may become the target of wasp swarms for no reason.
However, some studies have shown that if you don't want to provoke wasps in the wild, you can try to wear some red clothes, because wasps can't distinguish red, they don't go near you as close as they love to yellow or white, and it's worth reminding that in the wild, yellow and white clothes are indeed more likely to attract those flying bugs than red clothes.