You think the only thing that's scary is a virus? 30% of humans have been infected with toxoplasmosis by cats, which allow the host to be more adventurous through "spiritual control".

Abstract: a recent study in the journal Cell reports found that Toxoplasma gondii infection made mice more eager to explore and eliminate their fear of cats, so that they were eaten by cats and promoted the transmission and reproduction of Toxoplasma gondii. The severity of behavior changes in infected mice was positively correlated with the number of Toxoplasma cysts in the brain.in 2012, a biological disaster thriller film named "the invasion of the iron wire worm" was released in South Korea. In the film, the iron wire worm originally parasitized on insects mutated and parasitized on the human body. When it reached the breeding period, it would disorient the host, commit suicide and then enter the water for mass reproduction.Clematis has a long and slender body and a horsehair shape, with a maximum length of 1 m. the larvae parasitize in arthropods such as mantis and grasshoppers. In arthropods, the larvae of Clematis will induce the host to seek water, and then let them successfully enter the water to grow and live freely.Clematis is widely distributed all over the world. It can infect human body through water source and cause the disease (it is rare to infect human).it seems terrible to drill out of Mantis to look for water, but fortunately, as long as you don't touch sewage in your daily life, you don't have a chance to be infected. Moreover, it's very rare for human beings to get infected.however, in real life, human beings are very easy to contact and infect another parasite, Toxoplasma gondii. Clematis can induce the host to look for water, as if mind control is general, and Toxoplasma gondii has more mental control over the host.Toxoplasma gondii is a common intracellular parasite. Studies have shown that up to 30% of people have been infected with Toxoplasma gondii and become carriers.since the 1920s, doctors began to realize that if a woman is infected with Toxoplasma gondii during pregnancy, it may lead to illness of the baby, and in some cases, serious brain damage or even death.Toxoplasma gondii is also a major threat to people with low immunity: at the beginning of the epidemic of AIDS, scientists had not developed effective antiretroviral drugs, and many AIDS patients suffered from dementia due to Toxoplasma gondii infection in the late stage.but fortunately, healthy children and adults usually have similar symptoms at the initial stage of infection as common influenza. However, after the patients resist the invasion of Toxoplasma gondii, Toxoplasma gondii has not been completely eliminated, and it may also lurk in brain cells.early studies have found that Toxoplasma gondii has a strange "mind control" ability on rodents (mice, rabbits, etc.), once infected with this brain parasite, the brain and behavior of mice will be greatly affected. They no longer seem to be afraid of cats, and become more easily eaten, so that cats will be more infected with Toxoplasma gondii.it can be said that this parasite is quite "smart", and can manipulate the behavior of infected people through "mind control" so as to achieve the purpose of reproduction.even some studies have linked Toxoplasma gondii infection with mental health conditions such as impulsivity / schizophrenia.however, there has been a heated scientific debate on how Toxoplasma affects the host's behavior and how much it can control the host's mind.recently, researchers from the University of Geneva published a research paper entitled neuroimaging associated aspect management of mouse predictor fear by toxoplama gondii in the journal Cell reports.this study shows that Toxoplasma gondii infection makes mice more eager to explore, eliminates fear of predators (not just cats), and overturns the traditional idea that Toxoplasma gondii infected mice only selectively lose their fear of cats.in addition, studies have found that the severity of behavioral changes is positively correlated with the number of Toxoplasma cysts in the brain, indicating a wide range of immune related behavioral changes. the life cycle of Toxoplasma gondii requires two hosts. The intermediate hosts include reptiles, fish, insects, birds, mammals and humans, and the final hosts are cats and other felines. only in the intestines of cats and cats can Toxoplasma gondii reproduce sexually and infect more animals. some researchers suspect that Toxoplasma has distorted the brains of rodents to alter their perception of cats. some laboratory tests have shown that infected mice prefer to explore cat urine rather than other potential predators. this is not the case with Dominique Soldati Favre, a parasitologist at the University of Geneva. when she and her colleagues asked mice infected with Toxoplasma gondii to explore four odor chambers (their own, cat's, fox's, guinea pig's (a non predator's), the mice did not selectively explore cat's odor. in fact, infected mice spent a lot of time studying the odor of guinea pigs and foxes. mice were also willing to venture into a chamber containing a live anesthetized rat (another potential predator), while uninfected control mice almost always avoided. in several other behavioral tests, the team found that infected mice showed less anxiety and a stronger tendency to explore. for example, they spent more time in the maze, which was open and exposed, which were usually dangerous areas for mice. the researchers believe that the mice infected with Toxoplasma gondii are not only not afraid of cats, but also dare to go anywhere and have stronger risk-taking spirit. but this is not a good thing for the mice. Bold and curious mice are more likely to go out and be eaten. whenever it is eaten, Toxoplasma gondii is transmitted. then, why do mice have such huge behavioral changes after infection with Toxoplasma gondii? The team further suggested that the immune response caused by Toxoplasma gondii cysts in the brain is the basis of behavioral changes. this study found that the distribution of cysts in mouse cortex (outer layer of brain) was roughly uniform. genetic analysis of brain tissue revealed some inflammatory markers. studies have shown that the number of cysts and the level of inflammation are positively correlated with the degree of behavioral changes in infected mice. anti inflammatory drugs can reverse some behavioral changes in mice infected with Toxoplasma gondii. previous studies have suggested that as many as one third of people are infected with Toxoplasma gondii and become carriers, which is known as toxoplasmosis. some studies suggest that toxoplasmosis is associated with schizophrenia and other mental disorders. co author of the study, Soldati Favre, speculated that since Toxoplasma gondii appears to produce fewer and smaller cysts in healthy people than in mice, the possible inflammation and behavioral changes are small. however, future studies can test whether infected people show signs of inflammation, which is believed to be responsible for some neurodegenerative diseases. overall, the results of this study suggest that Toxoplasma gondii has found an "excellent location" for parasitizing in the brain: invading the brain is enough to trigger an immune response that brings the host closer to the predator, but not enough to kill the host immediately. this can be called "a very smart strategy". to some extent, Toxoplasma is a "crazy genius". finally, we opened a brain hole, Wu Song was not parasitic by Toxoplasma gondii, in the control of Toxoplasma, tiger, originally thought of being eaten by the tiger, so that Toxoplasma suck successfully into the final host tiger body, did not expect the tiger not to force, Wu Song was killed. paper links: