Viruses cause colds and flus, as well as more serious conditions such as HIV/AIDS, Ebola and COVID-19.
A virus is the simplest of germs—it is nothing but genetic material encased in protein. Researchers debate whether a virus is even "alive."
By itself, a virus can accomplish nothing—it needs to enter a living thing to perform its only function, which is to replicate. When a virus gets inside a human body, it can hijack a person's cellular machinery to produce clones of itself, overtaking more cells and continuing to reproduce.
Viruses also are capable of infecting any living thing, including bacteria and fungi.
When the virus reproduces faster than the immune system can control it, it begins to destroy cells and harm the body.
Viruses are also the smallest germ, making them generally the easiest to contract—they're so tiny they can spread through the air in a cough or a sneeze. Some viruses also are spread by mosquitoes or through bodily fluid.
Fungi are responsible for causing conditions such as yeast infections, valley fever and meningitis.
Fungi are more complicated organisms than viruses and bacteria—they are "eukaryotes," which means they have cells. Of the three pathogens, fungi are most similar to animals in their structure.
There are two main types of fungi: environmental, which are yeast and mold that often live in soil and don't generally cause infection in most healthy people; and commensals, which live on and in us and generally don't hurt us.
Commensal fungus, may play a beneficial role in our overall health.
Certain environmental fungi reproduce "spores," particles that can enter our body through the lungs or on the skin. These fungi can be especially damaging for people with weakened immune systems, as the fungi can spread quickly and damage many organs.
Other fungal infections can be caused by an overgrowth of commensal fungus.
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Viruses cause colds and flus, as well as more serious conditions such as HIV/AIDS, Ebola and COVID-19.
A virus is the simplest of germs—it is nothing but genetic material encased in protein. Researchers debate whether a virus is even "alive."
By itself, a virus can accomplish nothing—it needs to enter a living thing to perform its only function, which is to replicate. When a virus gets inside a human body, it can hijack a person's cellular machinery to produce clones of itself, overtaking more cells and continuing to reproduce.
Viruses also are capable of infecting any living thing, including bacteria and fungi.
When the virus reproduces faster than the immune system can control it, it begins to destroy cells and harm the body.
Viruses are also the smallest germ, making them generally the easiest to contract—they're so tiny they can spread through the air in a cough or a sneeze. Some viruses also are spread by mosquitoes or through bodily fluid.
Fungi are responsible for causing conditions such as yeast infections, valley fever and meningitis.
Fungi are more complicated organisms than viruses and bacteria—they are "eukaryotes," which means they have cells. Of the three pathogens, fungi are most similar to animals in their structure.
There are two main types of fungi: environmental, which are yeast and mold that often live in soil and don't generally cause infection in most healthy people; and commensals, which live on and in us and generally don't hurt us.
Commensal fungus, may play a beneficial role in our overall health.
Certain environmental fungi reproduce "spores," particles that can enter our body through the lungs or on the skin. These fungi can be especially damaging for people with weakened immune systems, as the fungi can spread quickly and damage many organs.
Other fungal infections can be caused by an overgrowth of commensal fungus.