So no matter how good or bad the weather is, about every three or five days, Huang Lei has to inspect the whole island.

Huang Lei's prestige among tenants is very high, especially after treating many people's physical problems such as headaches, brain fever, stomach and toothaches.

On two occasions, he also saved lives from the Grim Reaper, so the name "Yellow Divine Doctor" has been established in the hearts of the tenants of the island.

However, it wasn't long before Huang Lei's status in the hearts of the tenants rose from being a divine doctor to the level of an immortal, as he commanded the tenants to extinguish a suspected plague.

The reason why it is called a suspected plague is that the origin of the plague is unknown, and at first several older men developed symptoms, such as a slight fever, runny nose, followed by fatigue---- which is a bit like a cold.

Then, more and more people got this kind of cold, Huang Lei noticed that all of them were adults, and the children were fine!

Based on this, Huang Lei has understood that this is a typical flu.

For children in the growth phase, the immune system is also in the growth phase, so it is also very powerful, this system is constantly exposed to and recognized viruses and bacteria, and produces antibodies one by one, so that the body can defeat viruses and bacteria.

Therefore, the phrase "don't do it cleanly and eat no disease" has a certain truth in the child, as long as it is not attacked too intensively, the child's immune system is rarely collapsed, so it will always defeat various infectious diseases in the end, of course, this is also relative, everything can not be excessive.

However, some adults also take "don't eat clean, eat without getting sick" as a motto, that is, the performance of insufficient IQ.

Previously, Huang Lei had learned from Dai Ai and the others that there had just been a mild cold among the people on the island, and Dai Xiaoshan's preliminary identification conclusion was slightly embarrassing: it was caused by the virus brought in our body.

Dai Xiaoshan explained that the viruses in our bodies have evolved for 300 years longer than this era, and they are also viruses that have survived the test of various antibiotics, so compared to this era, the viruses parasitic in our bodies definitely have strong vitality.

Can't think of it, right? Reverse travel through time not only makes people powerful, but even viruses become invincible.

Therefore, once this powerful virus infects the natives of this plane, it is extremely powerful.

However, fortunately, the people infected at that time were "tested-and-tested" Han people, and yes, Dai Xiaoshan used the idiom "tested-and-tested".

Because the Han people living on the eastern continent are relatively speaking, there are still exchanges and movements, especially in troubled times, changes in the living environment and various voluntary or forced social exchanges, which do make the immune system in the body undergo various tests, so the average physical resistance of the Han people is not bad---- at least stronger than the primitive tribes living in the jungle.

Of course, compared to the more mobile Arabs, Europeans and a part of the black race close to North Africa, the immune system in their bodies should be stronger, after all, the epidemic in Arabia and Europe such as the Black Death and other virulent infectious diseases are constantly eliminating and testing the immune system of these ethnic groups---- therefore, those who can survive have good physical resistance, and the black people close to North Africa have been dealing with the Romans in Europe as early as a thousand years ago, and later mixed with the Arabs in North Africa, so the immune system of this race has also undergone various tests.

The Indians of the Americas, however, were more miserable.

This group as a whole is isolated on the American continent, and since about 10,000 years ago, it has not intersected with the Eurasian and African races, and has not experienced challenges without communication, so the immune system will stop progressing, and even become weaker.

When ----the Spaniards landed in the Americas, the group of Europeans who had just survived the Black Death in the Middle Ages were all drug kings for the American Indians.

So, if an Indian has a small cold that doesn't have anything to do with Europeans, it may be possible to wipe out a Native American tribe of men, women, and children.

So Dai Xiaoshan told Hou Huang Lei that the aborigines of the Australian continent are actually dangerous, if we go to that continent on a large scale in the future, let alone us, it is the virus brought by these Han people that infects the jungle tribes with little foreign exchange, it will definitely be a catastrophe.

Well, anyway, fortunately, the immune system of the Han people is still okay now, so when the Han people face the virus that crossed back from three hundred years ago, they still have some resistance.

But what about the second flu epidemic on Xiaowanshan Island?

After Huang Lei communicated with Dai Xiaoshan through telegram, the conclusion was even more embarrassing: the last flu was estimated to be caused by the virus carried by Xiao Ai's body, and this time it should be yours, after all, you are seven years older than Xiao Ai, and for the virus, it may happen that the virus in your body is a little stronger than the one in Xiao Ai's body, so the source of the poison this time is you!

Well, however, this time the situation is obviously much more serious than the last one, because this time the flu occurred in late autumn and early winter, which is the time of the epidemic in southern China, and the plague in Macau was about the same time.

For this reason, Dai Xiaoshan is also doing various preventive actions in the city of Macau, such as going to the homes of four Chinese businessmen to promote hygiene knowledge, urging the four families to quickly mobilize to clean up, including cleaning toilets and livestock manure, and treating toilets and livestock pens with lime water.

Obviously, these four are not enough, and the viruses and bacteria do not distinguish between people, so the substitute doctor also asked the governor of Bugano to come forward to clean up the sanitary environment in the city, calling on the citizens not to drink raw water as much as possible, to wash their hands frequently, ventilate frequently, and so on.

Dai Xiaoshan also went to the orphanage to do a lot of hygiene, check the body, isolate the sick children, and the Dai Shen doctor also announced in time that the medicines produced in the small stone house in Xiyuan would not be sold to the public for the time being, and all of them should be left to prepare for the possible plague.

This announcement was very effective, and immediately aroused the attention of the public, and various sanitation activities were really carried out.

Dai Xiaoshan's actions in Macao quickly received a comprehensive response from the citizens of Macao, after all, the name of the divine doctor was too famous, and during the days when the acting divine doctor was stationed in Macao, he did not know how many patients he cured on the spot, so he accumulated huge prestige and appeal.

Obviously, if these actions had not been carried out by the Governor of Bugano, the citizens would not have responded at all.

All these health actions were carried out, so that by the end of the year, there was no outbreak in Macau.

Of course, the actions of the substitute doctor in Macao will affect the small Wanshan Island.

When Huang Lei Xiaoai also planned to do the same, it happened that the tenants on the island suddenly broke out of this influenza en masse, followed by fever, weakness, and then a violent cough......

This frightened Huang Lei and the two brothers, it was obvious that this was the precursor of the plague epidemic!

So the two brothers discussed it urgently, and decided to take advantage of the fact that the epidemic had not yet spread to the sailors, and immediately let Xiao Ai take the children and sailors to the Assassin to hide, and you can train as much as you want, but try not to get off the ship if you have nothing to do.

Huang Lei himself, on the other hand, stayed on the island alone, in addition to leading the employees who did not fall ill to continue to insist on the production of the pharmaceutical factory, but also to treat the sick.

The anti-plague measures were old-fashioned, starting with the rapid distribution of the medicine from the pharmaceutical factories to all the tenants, and then isolating the sick people into the newly built ammunition factory, which was relatively remote, with empty houses, far from the settlements, which was suitable for the sick to live in and away from the healthy people.