The discovery by the members of the Divine Envoy King's legion that fly eggs can be used as medicine, or even a "universal elixir" to some extent, was discovered by chance.

Earlier, ants that had just started raising flies often got sick and even died as a result, and the mortality rate of rearing ants was several times higher than average. But the death of ordinary worker ants is not a big deal, and no ant reports this to the protagonist.

The reason why fly keepers are susceptible to disease is that flies have a fascination with decay, feces and corpses, and they have become walking virus spreaders, according to incomplete statistics, flies can cause as many as 65 kinds of diseases, including typhoid, cholera, dysentery, tuberculosis and so on. Some diseases do not infect ants, but some do, and can even be fatal.

Long-term contact with flies increases the chance of infection, which is the culprit behind the sharp increase in the disease rate of ant keepers.

Fortunately, as the time of fly breeding is getting longer and longer, the scale is gradually expanding, and the breeding industry is on the right track.

In this context, with the change of the living environment of flies, the flies in the farm are no longer able to contact so many germs in the wild, and their food is also provided by ants, and there is less pollution, so the types and quantities of germs carried by flies are also decreasing, and the disease and mortality of fly breeding ants are also steadily decreasing.

Overall, however, the disease and mortality rates of fly-feeding ants are still much higher than those of other working ants, and their average lifespan is lower.

The protagonist later discovers an anomaly in raising a colony of flies and ants.

He then took the time to dedicate himself to the problem, and by contrast, he found that maggot-raising ants had the lowest prevalence of any ant species in the nest, in stark contrast to the high prevalence of fly-raising ants.

The protagonist is able to deduce the reason for the high prevalence of fly breeding ants, after all, in human society, flies are unwelcome pathogen spreaders and food contaminators.

However, the ultra-low prevalence of maggot breeding ants is something that the protagonist did not expect.

By communicating with maggot breeding ants, the protagonist discovers that the biggest difference between these ants and other ants is their food.

Although all ants distribute their food uniformly, maggot breeding ants have some work that allows them to eat fly eggs conditionally.

Flies lay eggs in large quantities, and most of these eggs are used as food in addition to hatching the next generation of flies, and because they are rich in protein, the eggs are used as part of the high-grade food for males, queens and large workers, and it is almost difficult for workers and soldiers to eat.

However, due to the large number of eggs, many eggs can be damaged for various reasons even in the hatching room, such as being bumped during handling, being caught by the large jaws of ants that use too much force, being infected by fungi mixed into the hatching room, damaged by moisture, and naturally occurring abnormal eggs.

These damaged eggs need to be disposed of in time, otherwise they will quickly spoil and affect other healthy eggs.

These damaged eggs are not considered as high-grade food, and are generally eaten directly by the ants who found them, so that the maggot ants rarely need other food to produce the fruit.

The protagonist believes that the large amount of fly egg food ingested by the maggot feeders is the reason for the low incidence of the disease.

The protagonist knows before that flies, although they are very "dirty", rarely get sick, and their own resistance is very strong.

Flies have a digestive system that is very different from other animals, and bacteria simply can't help them.

Common mammals need to eat food first, and the food is digested and absorbed in the stomach, while flies digest the food before eating, and then suck the digested food into the stomach in liquid form, and the stay time in the stomach is only 7-11 seconds, and the bacteria are excreted before they have time to multiply. This type of digestion is called in vitro digestion and is also used by many insects.

The large amount of hair on the surface of the fly, as well as its digestive and blood systems, can carry pathogens, which can then be transmitted to other organisms through contact with food. Because the infection of pathogens is done during the feeding process of flies, flies only eat liquid food, and they have to change the food from solid to liquid before eating, swallow it to the front of the intestine for storage, and then send it to the middle of the intestine for digestion. Flies secrete large amounts of saliva from the salivary glands in their mouths (these salivary glands are found all over the body) before eating, and vomit food stored in the foregut onto the food at the same time as eating. Thus, in the process, pathogens located in the salivary glands or foregut are spread. Flies also excrete rapidly during feeding, and excreta from the hindgut can also spread pathogens into food. They will vomit, eat, and pull on the food, which ensures the health and safety of the flies.

However, even with such a digestive system, flies will inevitably eat some germs and bacteria, and if there are no countermeasures, they will eventually harm the flies' own body.

Flies have evolved to fire BF64 and BD2 globulins when they encounter bacteria that can reproduce quickly, and once they come into contact with the bacteria, they will "explode" and "die together" with the bacteria. The emission of these two globulins is always one after the other, in pairs, and never messy. It is worth pointing out that the bactericidal ability of BF64 and BD2 is thousands of times stronger than that of penicillin.

Human scientists have long been committed to extracting BF64 and BD2 from flies for treatment, and this all-natural antibiotic helps solve the already serious problem of "super germs" in the human world.

In the eggs and larvae, the content of these two natural antibiotics is extremely high. When maggot keepers eat broken eggs, they ingest a large amount of antibiotics.

In this world where there are no synthetic antibiotics, there is no doubt that fly eggs have become a pure natural "panacea", which has a strong inhibitory and killing effect on various germs.

Although the protagonist does not understand the specific principle, he comes to a similar conclusion based on observational reasoning.

He also experimentally made the disease-prone fly feeding ants also start to eat fly eggs, and after a period of time, he found that the incidence rate had dropped significantly, which verified his conjecture.

As a result, fly eggs can be found to be used as medicines and health products, and the reason why the protagonist has to retain a certain scale of fly breeding after making it clear that the flying knight mount will be gradually replaced by bees in the future is also because of this need.

For ants, this natural miracle medicine is so precious!