Still dare to eat? !! The world's number one "Poison King" far exceeds your imagination - WritenAreGiven


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Still dare to eat? !! The world's number one "Poison King" far exceeds your imagination

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The new coronavirus came menacingly, and in just one month, it swept across the country.
Still dare to eat? !! The world's number one "Poison King" far exceeds your imaginationRead

According to scientists from the Shanghai Pasteur Institute of the Chinese Academy of Sciences and other institutions, as the original host of severe acute respiratory syndrome (SARS) coronavirus and the Middle East respiratory syndrome (MERS) coronavirus, bats are very likely to be the new coronavirus. Natural host.

Bats not only carry coronaviruses, but also carry a variety of viruses such as Ebola virus, hantavirus, rabies virus, etc., and are true "Poison Kings". Why are bats so "loved" by viruses, but not vulnerable to viruses themselves?

Today, follow Jun Jun into the world of bats and learn about the "Poison King" hidden in the dark.

What you need to know about bats

As the second-largest mammal in the world after rodents, bats are widely distributed, and they can be found on all continents except the poles.

About 4,600 mammals have been identified around the world, and bats are the only mammals that can fly. Taxonomically, they belong to the order Mammalia, which is further divided into large bats and small bats, with 19 families and 185 genera. 961 species.

Among them, the large bat suborders are only one family of the flying fox family, but it is the most important bat species that carry the virus. So far, 173 viruses have been detected in bats by various methods, 61 of which are zoonotic. It can be said that In recent years, the outbreak of some new viruses and the return of old viruses have been closely related to bats.

Still dare to eat? !! The world's number one "Poison King" far exceeds your imaginationRead

Why bats are so potent

-Densely populated

First of all, bats are social animals. Many bats live together. The density of bats in groups is amazing. For example, Mexico ’s tailless bats can reach 3,000 individuals per square meter, and a cave often inhabits millions of bats. High-density intra- or inter-species contact enables rapid virus transmission between bats.

With such a large number of colonies, even if some bats are killed by the virus, it will hardly have any impact on the population, and the survivors will be tolerant to the virus they carry and can continue to detoxify.

-Deep association with the virus

Bats are one of the older mammals. They have already had close contact with viruses during the long evolution of 5 million years, such as Hannibal virus and rabies virus. They struggled with each other and evolved together, and finally reached a consensus and harmony. Get along, avoid hurting each other, and grow together.

-Different from ordinary people's body temperature

Bats have a body temperature of 36 ° C during the day but can reach 39 ° C at night. Their diurnal body temperature difference is greater than that of ordinary animals. This physiological characteristic may cause viruses that are sensitive to temperature themselves to fail to reproduce stably.

In addition, bats are the only mammals that can truly fly. During the flight, a large amount of heat is generated, causing the body temperature to quickly rise to 38 ° C ~ 41 ° C. Such a high body temperature can inhibit the replication of the virus, reduce the virus load in the body, and at the same time accelerate the immune response of the body, thereby reducing the damage to the body by the virus.

Because of this, many viruses in bats have adapted to their capricious body temperature. When they are transferred from bats to humans, they can easily withstand the high temperature created by the human immune system, which is fever. So these viruses are menacing and more difficult to deal with.

-Immune system to swallow

Unlike the immune system of humans or other mammals, which tends to take the initiative to kill the virus, bats deal with the virus by "suffering" and strive to live in peace with the virus.

For this reason, bats have evolved some special immune mechanisms, showing strong immune tolerance, and their immune systems look quite dull, just like the lightning in Crazy Animal City. Looking anxiously.

Their immune system will only adopt a milder immune response to the invading virus, will not show a strong immune pathology, and will not completely kill the virus.

Although the bat's body does not produce any abnormal behaviour to the virus, it can continue to detoxify outwards, which is why they have become an important "drug king".

How do bats "tweak" creatures?

Bats spread viruses in a variety of ways. The viruses they pass through glandular secretions and excreta can be transmitted to humans in the form of aerosols. There are also a few vampire bats, such as those in Latin America, which directly attack humans and cause Onset of infection.

However, bats rarely actually transmit the virus directly to humans and often require intermediate host animals to transmit the virus to humans.

For example, the Hendra virus was infected by the horses of the pasture when they were infected with the humour and secretions of poisoned bats, and then infected with humans. 105 people died; arthropods living in the same habitat as bats, such as mosquitoes and flies, may also transmit the virus.

Still dare to eat? !! The world's number one "Poison King" far exceeds your imaginationRead

In addition, some local residents have the habit of eating bats. Although high-temperature cooking can kill viruses in bats, there is still a great risk of infection in the process of capturing and slaughtering bats.

The bat says the pot of the virus is not memorized

Bats are "Poison Kings", why not just kill them all and completely cut off the source of infection?

Bats are actually very innocent. They originally live in deep forests and caves that are easy to hide. They are far away from the environment in which humans live. However, as the population increases, the range of human activities increases, the forest area decreases, and the environmental quality decreases. Insufficient food forces bats to fly into the human world.

For example, the outbreak of the Nipah virus is the excessive destruction of the environment by human beings, and the food has been greatly reduced, causing the flying foxes to migrate from their original habitats to orchards on the edge of the forest for food.

Many pig farms in Malaysia are adjacent to orchards. Fruits contaminated by flying foxes have fallen to the ground and eaten by pigs, causing the Nipah virus to spread from pigs to humans.

Still dare to eat? !! The world's number one "Poison King" far exceeds your imaginationRead

As a part of nature, bats have existed for millions of years and occupy a very important position in the ecosystem. Insect-eating bats are natural enemies of pests, and fruit-eating bats are spreaders of seeds and pollen. They contribute to the maintenance of ecological balance.

Instead of killing them because they carry a lot of viruses, let them stay in their original habitat and try not to disturb their living environment.

Not catching, killing, eating, and staying away from bats is the greatest protection for us humans.


1.Li Wendong, Liang Guodong, Liang Bing, et al. Research progress on bat-borne viruses [J]. VirologicaSinica, 2004, 19 (4): 418-425.

2. He Biao, Tu Changchun. Research progress on bat virus [C] // Animal ecological breeding, epidemic prevention and control, food safety and human health——The 8th National Member Congress of the Chinese Society of Animal Husbandry and Veterinary Medicine Fifteen academic seminars. 0.

3.Chang Changchun, Xiao Chang, Gong Wenjie. Bat-zoozoite virus important natural host animal [C] // Chinese Academy of Animal Husbandry and Veterinary Medicine Annual Conference. 2009.

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