Will mosquitoes transmit new coronavirus?

As the temperature continued to rise, mosquitoes began to appear in many places. Because mosquitoes suck blood and are the vectors of many diseases, many people start to worry: If mosquitoes inhale the blood of patients with new coronary pneumonia or asymptomatic infections, and then bite healthy people, will they spread the new crown virus?

Mosquito bites can infect many diseases, such as malaria and dengue fever, but so far, there is no evidence that the new coronavirus can be transmitted by mosquitoes. The process of virus transmission by mosquitoes is quite complicated. It is not as simple as sucking the virus out of the blood of a patient and then injecting it into the blood of a healthy person.

Mosquitoes spread the virus by first inhaling the virus-containing blood through the mouth, then the virus must multiply and replicate in the mosquito body, break through the midgut basement membrane and enter the body cavity, and then spread to other parts along with the hemolymph. Only when the virus crosses the salivary gland barrier of mosquitoes, and then infects the salivary gland, can the virus be transmitted to the bite target the next time blood is sucked. Viruses that can complete this process are also called mosquito-borne viruses, but coronaviruses are not included in mosquito-borne viruses.

In addition, the new coronavirus is a genus of beta coronavirus that can only infect vertebrates, while mosquitoes are invertebrates. In other words, mosquitoes will not be infected with new coronaviruses. Even if the mosquitoes ingest the blood of people infected with the new coronavirus, the new coronavirus will not survive in the mosquitoes, and will not replicate in large quantities, so there will be no new coronavirus in the mosquitoes.

If a person infected with a new coronavirus bites, a small amount of new coronavirus will indeed be contaminated on the mosquito mouthparts, but the amount of virus contaminated is very small. According to existing research, the average blood intake of each female Aedes albopictus is 1.3570~1.4820ml, and the amount of blood contaminated on the mouthparts is very small, not enough to cause infection.

In general, the possibility of mosquitoes transmitting the new coronavirus is extremely low, but the “ability” to transmit other viruses should not be underestimated, so anti-mosquito and mosquito control should also be on the agenda.

Soymilk and eggs, when eaten together, can destroy the activity of trypsin and affect the digestion and absorption of eggs. Therefore, eating eggs together with soymilk will greatly reduce the utilization of protein in eggs, which is a very wrong way of eating. Is it really?

Soybeans do contain some trypsin inhibitors, which can inhibit the digestion of trypsin, to a certain extent, reduce the digestion and absorption of protein. However, trypsin in soy milk will be inactivated with the heating of soy milk, and no longer has the function of inhibiting protease activity.

If soymilk and protein are equal, then by analogy, not only can soymilk be eaten with eggs, but any food containing protein, such as meat, milk, and whole grains, cannot be eaten with soymilk, which is ridiculous. In fact, as long as the soy milk is cooked, it will not interact with any protein-containing food. However, you should not use hot soy milk to make raw eggs. Because eggs contain some pathogenic bacteria, the temperature of hot soy milk may not be enough to kill these pathogenic bacteria. Eating such mixed foods may cause adverse effects such as food poisoning.