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Vaccines do work, but we must remember that it takes a lot of time and money , for example a man worked on a vaccine for 19 long years before he succeeded.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agodocters might not know the cure to certain viruses. and it might not be a serious virus or not very common nor contagious or it might go away easily with just some medicine
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Are all viruses dangerous?
Not all but some do. If a person has a contagious virus then stay away from them. Some travel only buying eating raw meat or poisoned food or dirty water. Another science question d by the wizzo!
Where did viruses come form?
Answer -------Tracing the origins of viruses is difficult because they don't leave fossils and because of the tricks they use to make copies of themselves within the cells they've invaded. Some viruses even have the ability to stitch their own genes into those of the cells they infect, which means studying their ancestry requires untangling it from the history of their hosts and other organisms. What makes the process even more complicated is that viruses don't just infect humans; they can infect basically any organism-from bacteria to horses; seaweed to people.Still, scientists have been able to piece together some viral histories, based on the fact that the genes of many viruses-such as those that cause herpes and mono-seem to share some properties with cells' own genes. This could suggest that they started as big bits of cellular DNA and then became independent-or that these viruses came along very early in evolution, and some of their DNA stuck around in cells' genomes. The fact that some viruses that infect humans share structural features with viruses that infect bacteria could mean that all of these viruses have a common origin, dating back several billion years. This highlights another problem with tracing virus origins: most modern viruses seem to be a patchwork of bits that come from different sources-a sort of "mix and match" approach to building an organism.The fact that viruses like the deadly Ebola and Marburg viruses, as well as the distantly related viruses that cause measles and rabies, are only found in a limited number of species suggests that those viruses are relatively new-after all, those organisms came along somewhat recently in evolutionary time. Many of these "new" viruses likely originated in insects many million years ago and at some point in evolution developed the ability to infect other species-probably as insects interacted with or fed from them.
Do all infections cause disease?
Yes, they both do. The difference is that you can cure diseases from bacteria but not from viruses. You can prevent both kinds with vaccines.
Where do bacteria and viruses live?
Viruses live almost everywhere around us in places such as the soil and air.Different viruses may infect plants,animals or even bacteria .Viruses try to gain access to the machinery in the cell in order to make more viruses.
What are the differences between bacteria and humans?
There are many differences * Bacteria are microscopic while human is not. * Bacteria are prokaryotes. Human is eukaryote. * Bacteria has a cell wall. * Bacteria are the earliest known organisms on earth.
Is there any specific name for a helpful virus?
No. Any and all viruses are parasitic. There may not be any helpful viruses, but there are certainly a large quantity of harmless viruses, which doesn't infect humans, but rather specific animals or plants.
Which are the diseases for which vaccines are not discovered?
Currently, all vaccines on the market today only exist for diseases caused by viruses- though not all diseases caused by viruses have a corresponding vaccine. Notably, the common cold (rhinoviruses) and AIDS (HIV) have no vaccines.
how are new viruses produced How might this process cause harm to the infected cell?
All viruses kill they cells that they infect. If not right away then later.
What parts of a computer do viruses infect?
Their are many parts of a computer that viruses infect. Most viruses infect a certain file or program so that whenever that file is run, the virus is also executed. Some viruses called Master Boot Record viruses infect the Master Boot Record of your computer. The Master Boot Record is the partition of your computer first executed when you boot up your computer. When you turn on your computer, it runs all the programs inside the Master Boot Record partition and then passes control to other child processes. Viruses in this class infect the Master Boot Record so that whenever your turn on your computer, the viruses runs at startup too. These viruses are very tricky to find as they hide in a very deep part of your Operating System and manually deleting them could damage your computer.
Are all viruses dangerous?
Not all but some do. If a person has a contagious virus then stay away from them. Some travel only buying eating raw meat or poisoned food or dirty water. Another science question d by the wizzo!
Is HIV able to make copies of itself without the aid of another organism?
No HIV, like all viruses lacks the machinery for self replication. Viruses instead must infect a host cell and hijack the cell to make more viruses. In the case of HIV, it must infect a living human cell in order to copy itself.
What operating system to most computer viruses infect?
The operating system that most if not all viruses are made for is Windows. Since Windows was the first operating system built and most people own a Windows operating computer, then won't you think most viruses will target and infect Windows computers? Mac and Unix computers generally won't acquire viruses since not much of them are written for their platforms.
Where did viruses come form?
Answer -------Tracing the origins of viruses is difficult because they don't leave fossils and because of the tricks they use to make copies of themselves within the cells they've invaded. Some viruses even have the ability to stitch their own genes into those of the cells they infect, which means studying their ancestry requires untangling it from the history of their hosts and other organisms. What makes the process even more complicated is that viruses don't just infect humans; they can infect basically any organism-from bacteria to horses; seaweed to people.Still, scientists have been able to piece together some viral histories, based on the fact that the genes of many viruses-such as those that cause herpes and mono-seem to share some properties with cells' own genes. This could suggest that they started as big bits of cellular DNA and then became independent-or that these viruses came along very early in evolution, and some of their DNA stuck around in cells' genomes. The fact that some viruses that infect humans share structural features with viruses that infect bacteria could mean that all of these viruses have a common origin, dating back several billion years. This highlights another problem with tracing virus origins: most modern viruses seem to be a patchwork of bits that come from different sources-a sort of "mix and match" approach to building an organism.The fact that viruses like the deadly Ebola and Marburg viruses, as well as the distantly related viruses that cause measles and rabies, are only found in a limited number of species suggests that those viruses are relatively new-after all, those organisms came along somewhat recently in evolutionary time. Many of these "new" viruses likely originated in insects many million years ago and at some point in evolution developed the ability to infect other species-probably as insects interacted with or fed from them.
Who are the victims of Type A influenza?
Just about anyone who gets the flu. Most of the influenza viruses that cause disease in humans are Type A influenza viruses (but not all). Type A flu viruses are also what cause pandemics in humans.
Do all infections cause disease?
Yes, they both do. The difference is that you can cure diseases from bacteria but not from viruses. You can prevent both kinds with vaccines.
Does freezing meat make it all right to eat if the animal had a disease?
Freezing meat will kill many types of disease causing organisms, but not all of them. Parasites such as worms will be killed, bacteria will be killed, but viruses can survive freezing. Of course, viruses that infect animals usually will not infect people, they tend to be species specific. So your chances are pretty good.
Can viruses only cause disease in humans?
Viruses can affect animals, and some viruses can affect plants.
