How many bacteria are hidden in dust? What are the harmful bacteria in dusty travel

Dust is the powder of soil or other substances that are finely dried and powdered; something that has been reduced to a tiny part; fine powder, therefore, strictly speaking dust is"Clean"The means, of course, in the setting of a laboratory.

In real life, dust often contains a large number of bacteria, and the bacterial content of dust of the same quality is also different in different environments.

The biggest impact of dust is because it carries many bacteria, viruses and insect eggs flying everywhere and spreading diseases. Industrial dust and fine dust can make workers suffer from a variety of difficult occupational diseases, excessive dust can also cause environmental pollution, affect people's normal life and work, induce human respiratory diseases and so on.

As long as the bacteria that can survive in the air can be carried by dust, such as botulinum toxin, E. coli , etc.

A study published in the Proceedings of the Royal Society B (Biological Sciences) showed that the average household dust harbors an average of 9,000 different microorganisms. Researchers from the University of Colorado sampled 1,200 homes across the United States for dust. They found that the types of fungi and bacteria in the dust depended on the location of the house, family members, and whether there were pets in the household.

Associate Professor Noah Feller, who is in charge of this research project, said: "We are studying the most basic aspects of natural history. ”

We've known about the existence of microbes in the home for a long time, and we're doing the most traditional research methods to see how microbial populations change in different environments. ”

The study is a sub-project of the public science project "Wild Life in Our Families".

Across the United States, 1,200 households sent dust samples to researchers. The researchers requested that the dust samples should be collected in the stone crevices of the doorway steps, as this is the dead end of the cleaning.

The researchers then performed genetic analysis on the samples sent for testing, which revealed a variety of microorganisms in the household dust.

On average, there are more than 2,000 different fungi hidden in household dust. There are well-known Aspergillus, Penicillium spp., Alternaria and Fusarium, to name a few.

However, the distribution of fungal species is inseparable from the geographical location of the house.

The vast majority of fungi we find in our homes come from the outdoors. "They cling to our clothing or are blown into the house by the wind through doors and windows." Therefore, the location of your house largely determines what kind of fungus will appear in your home. ”

Researchers also found more than 7,000 species of bacteria in the dust, including bacteria like staphylococci and streptococcus, which are associated with humans, as well as bacteroides and clostridida, which come from feces.

The distribution of bacterial species depends on who lives in the house or whether they have pets.

We found that there was a big difference between the types of bacteria in the house dust between men and women. "Because there are several bacteria that are more common on women's bodies, this difference affects the distribution of bacteria in dust." ”

The number of bacteria in the dust of dog families is significantly higher. "We were very surprised. Pets have a much greater impact on indoor bacteria than all other factors, and much more so than the location of the house and the decoration. ”

Although the study surveyed American households, Feller said the findings are applicable to other parts of the world as well.

Next, researchers will look at how these microbes affect human health. Although some of the microorganisms in the dust are pathogens and allergens of some diseases, researchers say that the vast majority of the organisms in the dust are harmless, and some are even beneficial to humans.

People don't have to worry about these microbes in their homes. They're everywhere, they're on us, they're in every corner of the room, but the vast majority of them are harmless. "We're surrounded by microbes, and it's just a matter of life. ”

Dust refers to the fine particles formed by the mixture of different tiny substances, which can come from human and animal hair, clothing, etc., as well as from car exhaust, building materials, pollen trapped in the air, etc. During dust travel, there are many harmful bacteria present. These bacteria can arise from different sources, including human and animal waste, decaying food, waste, etc.

The harmful bacteria in the dust mainly include: Escherichia coli, Salmonella, Staphylococcus aureus, Streptococcus, etc. Escherichia coli can cause nausea, vomiting, abdominal pain, diarrhea and other digestive system diseases; Salmonella can cause headache, fever, vomiting, abdominal pain, and other symptoms similar to food poisoning; Staphylococcus aureus can cause **infection, meningitis and other diseases; Streptococci can cause respiratory diseases such as tonsillitis and otitis media.

In addition, other harmful bacteria such as stokocci faecalis and norovirus may be present in the dust.

In order to prevent the harmful bacteria in dust from affecting human health, we can take the following measures: clean the home and office environment regularly, keep the room dry and ventilated, and avoid accumulating dust; Maintain personal hygiene, wash hands frequently and avoid cross-infection; Regularly disinfect areas prone to contamination such as kitchens, bathrooms, and electrical appliances; Maintain food hygiene, store and handle food in strict accordance with regulations to avoid food contamination.

In addition, for some specific groups of people, such as the elderly, pregnant women, children, immunocompromised people, etc., their physical health is weaker and more susceptible to infection with harmful bacteria in dust, so more attention needs to be paid to the implementation of preventive measures.

In summary, there are more harmful bacteria in dust travel, and these envy bacteria may cause adverse effects on human health. In order to prevent the attack of these harmful bacteria, we need to take measures to maintain environmental hygiene, strictly control food hygiene, and disinfect and clean regularly. <>

1.Bacteria are things that are invisible to the naked eye, and they have a serious impact on our human body, but dust can be seen in sunlight.

Dust is visible to the naked eye, but the dust particles of the dust carry bacteria. Bacteria are so small that they are only a few to tens of microns in diameter and cannot be seen with the naked eye and can only be observed through a microscope.

Dust is a substance that can be seen everywhere in our lives, and it is easy to float in the air, and dust also has a certain bacterial content, but this bacteria will not harm the body, but the body is weak, or the body resistance is poor people will be prone to frequent illness, usually should pay more attention to the cleanliness of the air, as well as the cleanliness of the room, so as to reduce bacteria.

Bacteria are microorganisms that are infectious diseases. It is very dangerous, and if you inhale it, you will get sick. Dust is the foam of dust floating in space.

The former is alive and the latter is inanimate, and the two influence each other and are interdependent.

Bacteria are living organisms, and dust is just a simple substance.

Some dust is visible to our naked eyes, while bacteria are tiny and invisible to our naked eyes.

Bacteria are a microorganism and dust is dead.