We can control bacteria and fungus easily whereas it is very difficult to control virus. Even, there is no control of some viral diseases and virus, e.g., HIV. Why is it difficult to control viruses?
Simply because viruses don't have their own synthetic machinery.
Unlike bacteria and fungi, it is not a necessary condition for life (nutrition, respiration, division) for viruses. Viruses are inactive even for years to come to the necessary conditions. But the activation and reproduction of themselves in the presence of certain conditions (penetration into the cells) are their main differences and advantages compared with bacteria and fungi.
I guess it would depend on what you mean by "control". Naturally immunity or medical intervention? And I think it's more regional and individual dependent.
I'm not a virologist, but from the point of the flu and HIV, they just mutate so much faster than bacteria. Whether natural control or interventions, if you keep having to hit a moving target, it's difficult. For people with natural immunity (ether lack of receptor, better antibody responses, etc), they are completely fine...so... in these people they won't have a problem.
That being said... I used to work on tuberculosis, and I can tell you, we don't have a handle on this either. And what protects you in one phase of the disease is what causes the pathology in the next, and it's maybe what eventually kills you. And TB can stay dormant for decades.
If we start talking about antibiotic resistance... then... we don't have a good control on this either. I think we are past the point of slowing this down.
I think in the end, it's more acute versus chronic diseases that is the split. We can control acute diseases better, because you can tell the sick people rather quickly from those who aren't infected. Chronic infection don't kill you right away, they often even won't make you overly sick. They just stick around and make you a great vehicle to spread the pathogen to other people. Then they kill you in the end...
The viral diseases have been controlled and even eradicated by vaccinations. However, the control and eradication depends on type of virus. Generally, there are many hurdles, like, lack of effective antiviral treatments, high mutation rate in this organism and also difficulty to perform virology studies which are supposed to understand our knowlege aobut it.
In an imaginary world, we would be able to develop some antiviral drug or vaccine which can give us immunity against multiple viruses.
It is due to antigenic drift and antigenic shift of the viruses characteristics. The viruses undergoes continuously changes. These are the main reason why it is difficult to control.
Bacteria can be killed because they are independent cells living outside of our our cells. Antibiotics can be found that are toxic to them but not to our own cells.
Viruses are obligatory parasites. They use the mechanisms of our own cells to reproduce, so if we find a chemical that stops the virus it generally also stops our own cells. Viruses function inside our own cells so any chemical that attacks them has to get inside our own cells.
Its difficult to control viruses, because they were found inside the living cells. So its treatment means killing of these cells.
Viruses consist of DNA or RNA and protein only. So they inter to living cells and reproduce by replication of DNA by the cell itself and stay in the cell and destroy the cell metabolism. So if we want to use any drug to kill veruses, we have in the end killed the cell.
Кілька причин. Вони надзвичайно мінливі. Складно їх досліджувати. Фахівців мало. Необхідна складне обладнання й спеціальні приміщення.
Hello everyone. I'm not from the biotech industry, so I'm trying to understand how the viruses work. But, what if the way to find the cure to viruses in the world isn't about creating a vaccine? I'm thinking about other approaches such as using physics sciences and biological sciences together. So, the point is, There are multidisciplinary research teams devoted to finding the cure to viruses in the world?
Dear it is because the virus uses the host cells in its replication.
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