Fuzhou Daily (reporter: Lin Wenjing, correspondent: Fang Haiyin) In the warm spring, many children choose to go out for an outing to enjoy flowers. When embracing nature, you must be careful of the hidden dangers around you. "Every April is the peak season for tick bites. Once they become prey, they can even be fatal!" Yesterday, Yang Jingjing, deputy chief physician of Fuzhou CDC, reminded that tick bites can cause many diseases, including tick paralysis, tick bite fever, new Bunia virus infection, Lyme disease, forest encephalitis, fever with thrombocytopenia syndrome, etc, Severe cases can cause death.

It is reported that ticks, as external parasites, are vectors of some zoonotic diseases, mainly dormant in the grass, soil slopes in the hills, or parasitic in animal fur. Generally, if you bite livestock or pets, you will also bite people. If you bite people, you will not let go. When not sucking blood, small ticks are as big as mung beans and as big as rice grains. When sucking enough blood, its shape is like a soybean.

When ticks bite and suck blood, they will secrete some saliva and inject it into the host's body. The saliva of ticks contains many enzyme components, which can play the role of tissue digestion and nerve anesthesia. The hydrolases in the saliva of ticks can lead to the dissolution of tissues, making their mouthparts easily penetrate into the skin and easily transmit various germs carried in the body to the human body.

So, what should we pay attention to when going on an outing?

Yang Jingjing gave suggestions: First, try to avoid sitting and lying for a long time in the main habitat of ticks (such as grassland, forest and other environments). If you need to enter, it is recommended to wear long sleeved clothes, not sandals, tighten the trouser legs or tuck the trouser legs into socks or shoes, and wear light colored clothes to find out if there are ticks; After outdoor activities, carefully check your body and clothes to see if there are ticks biting or climbing; If you have to stay in the field or camp for a long time, you can use pesticides to soak camping equipment such as clothes and tents, such as permethrin, repellents containing DEET, etc.

"If you find that you have been bitten by a tick, you should never touch it directly with your hands or drag it by force. The alcohol eraser and cigarette end scald posted on the Internet are also unreliable. The mouthpiece of the tick is deeply buried in the skin. As long as it does not actively loosen its mouth, you can only take it out completely by cutting it." Yang Jingjing specially reminds those who have a history of tick bites or outdoor activities, In case of fever and other suspected symptoms or signs, seek medical advice as soon as possible and inform the doctor of the relevant exposure history; If the ticks are accidentally squeezed and there is effluent, it should be disinfected in time.

"There are many symptoms after being bitten by ticks, but when being bitten by ticks, there will be no pain. After being bitten by ticks, there will be redness and swelling of varying degrees in the local area 24 hours to 48 hours, with small spots bitten by insects in the center, and obvious redness and swelling, even blisters, can appear around the serious ones. At this time, do not scratch the affected area, which may leave an incurable ulcer or cause local tissue necrosis. " Yang Jingjing said.