It was not so long ago that people realized that microbes even existed. Anton van Leeuwenhoek was the first person to see bacteria during the 1660s. He had ground magnifying lenses and was interested that he could see small microbes. For almost two centuries, the knowledge was regarded as an interesting but rather irrelevant fact.
The germ theory of disease was not really fully developed until the 1870s but, 30 years before this, a doctor in Vienna called Ignaz Semmelweis noted a disease called child-bed fever was passed from one mother to another by doctors not washing their hands.
Louis Pasteur and Robert Koch in the 1860s and 1870s finalized the Germ Theory of Disease. Both realized that boiling broth and covering it tightly kept out spoiling microbes.
You have to see that this was only about 140 years ago. Antibiotics were only available since the 1940's (Penicillin).
As for viruses, they were first discovered later as they are so small. Beijerinck investigated the cause of tobacco mosaic virus in the late 1800's but he could not see them but did prove something smaller than a bacteria caused this TMV.
Viruses that are harmless to humans can be used to infect bacteria or other pests eg rabbits
Bacteria and viruses are common types of pathogens that can cause infections and illnesses in humans. Bacteria are single-celled organisms that can be harmful or beneficial, while viruses are infectious agents that need a host cell to reproduce. Both bacteria and viruses can spread through contact with infected individuals, contaminated surfaces, or through the air.
Viruses van cause diesease and so can bacteria they are both microscopic they can evolve they have DNA they can reporduce (even though viruses can only reporduce in a cell) they are passed through the air They have both caused plagues
Bacteria,fungi,or parasitic worms invade the human body.
H1N1 refers to a subtype of the influenza virus, not a bacteria. Influenza viruses can cause respiratory illness in humans and animals. It is important to note that viruses and bacteria are different types of microorganisms that can cause different types of infections.
Viruses that are harmless to humans can be used to infect bacteria or other pests eg rabbits
elephants humans dafffodils earth worms yeast bacteria virus
Bacteria and viruses are common types of pathogens that can cause infections and illnesses in humans. Bacteria are single-celled organisms that can be harmful or beneficial, while viruses are infectious agents that need a host cell to reproduce. Both bacteria and viruses can spread through contact with infected individuals, contaminated surfaces, or through the air.
Viruses are considered to be a serious threat to humans because they are very difficult to control. Very few things can control viruses except antivirals.
Viruses van cause diesease and so can bacteria they are both microscopic they can evolve they have DNA they can reporduce (even though viruses can only reporduce in a cell) they are passed through the air They have both caused plagues
Bacteria,fungi,or parasitic worms invade the human body.
Cell Walls
Viruses and bacteria are both microscopic organisms that can cause infections in living organisms. They are different from each other in terms of structure and how they reproduce, but they can both cause diseases in humans, animals, and plants.
H1N1 refers to a subtype of the influenza virus, not a bacteria. Influenza viruses can cause respiratory illness in humans and animals. It is important to note that viruses and bacteria are different types of microorganisms that can cause different types of infections.
The four broad types of pathogens are bacteria, viruses, fungi, and parasites. Each type of pathogen can cause various diseases and illnesses in humans and other organisms.
Viruses are cellular parasites.
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