Viruses (biological)

Rabies is neither unicellular or multicellular, because it is a virus. Viruses are not cellular and this person is lying

Any living mammal is capable of being infected by rabies, including humans. A very small percentage of the human population has been vaccinated to protect against rabies infection, so they are at much lower risk. This population includes animal control officers, veterinarians and others who have a high exposure risk profession.

The HIV virus contains two copies of single-stranded RNA.

We don't know. We can't really study how they evolved because they don't leave fossils. There are several different theories as to how they evolved - they could have been bits of cells, or random self-reproducing molecules, or particular cells that lost all of their useful parts except for DNA/RNA.

answer 2:

Probably viruses exists longer as life (a we define it today) itself. Probably the first mechanisms of life are early forms of DNA/RNA without a skin. I think the earliest forms of life started in an area with a source of the same building blocks and an area dense but liquid enough to carry them like water. To me it sounds logical that futher away from this source, where building blocks became scarce, these molecules could not reproduce anymore. By time, chance and exemplary differences, only the ones that adapt to the changed environment could carry themselfs futher away, benefit from that and adapt (develop) even more. The ones that developed a skin which acted like a sealed buffer with building blocks as a reserve within and became more self supporting, could carry itself to other places and develop even more from that. This cellular form of life is related to the life as we know it today and is also more developed and abundant. Probably the skinless forms didn't go away completely. They invaded those buffers and made use of it as well and now they still exists as viruses today.

Interesting to know is that sea is full of viruses (1 to 10 billion per 1 liter of water) and play a large role in that ecosystem.

The virus sticks to the cell it is going to attack, injects its DNA and other life functioning items from it, the cell is tricked into making copy's of the items, the parts assemble into more viruses, and finally the viruses break out of the attacked cell and the cell bursts.

Yes. The virus that causes the flu is very sneaky and you can be infected and pass the virus to others even before you know you are sick. The best defense is to avoid others who are sick and to wash your hands frequently.

Ribosome

Viruses can cause lytic infections or lysogenic infections. When a virus enters a cell to make copies of itself, causing the cell to rupture, that is called a lytic infection. A lysogenic infection is where a virus incorporates itself into the DNA of the cell it invades and replicates its genetic code.

Without a host cell a virus is not exactly alive.

But yes, viruses can exist alone but they do nothing. However many viruses are fragile and breakdown on exposure to air, others can remain for years on a surface just waiting for a host to infect.

Ebolaviruses belong to the Group V (the negative sense single stranded RNA viruses), Mononegavirales (the RNA is non-segmented), Filoviridae (they have a thread like appearance), Ebolavirus, species.

There are many different ways for a virus to enter a person's body, and it mostly gets in with the use of inhalation or digestion. For example, if the water you drink is contaminated, or someone sick drinks from it first, then you might catch the disease as well. It is sometimes inhaled as well, whenever someone who is sick sneezes, and does not cover his/her mouth, then you might catch the virus as well. That's why most people wear medical masks to prevent inhaling virus or any other sickness. Viruses can also be passed with a simple touch, but it is uncommon in certain countries.

Viruses are composed of two main parts an outer protein covering called a capsid and an inside core of either DNA or RNA. Not both DNA and RNA. Some of these have an envelope over the capsid. The ones that do not are said to be naked. The proteins in the capsid allow the virus to attach to the "docking stations" proteins of the host cell. The naked viruses are more resistant to changes in the environment.

Some naked viruses include poliomyelitis, warts, the common cold, chickenpox, shingles, mononucleosis, herpes simplex (cold sores), influenza, herpes viruses and HIV (AIDS).

Some enveloped viruses include norovirus (stomach bug), rotavirus and human papillomavirus (HPV).

The envelope can be damaged by freezing temperatures, chlorine, and phenol. If damaged the virus cannot infect.

• Rolling of the body and signs of distress
• Paddling of the hands or limbs
• Mental confusion
• Blindness
• Head tilt
• Loss of muscle tone
• Thick, white and creamy fluid or pus found in the ear
• Fainting (although this is rare in rabbits)

well back in old England a fellow ship of crazy aristocrats began to arise and they called themselves Rabies they used to run around the town like lunatics. When the first rabid animal appeared victim said it looked like a rabies member and that was that

Measles is an infection of the respiratory tract that can be caused by both a bacteria and a virus.

Most people think of the virus strain typically, as there is a vaccine for it, and people rarely need to be treated with antibiotics for the bacteria strain.

SARS is a disease of the respiratory system. It is short for Severe Acute Respiratory Syndrome. SARS is a communicable disease. it can be gotten by close contact or breathing the same air as an affected person.

It is possible, but not likely. If the dog has rabies, and you have cuts in your mouth, it could be possible to be infected.

It kills the host bacteria. I don't believe it occurs in eukaryotic cells.

The AIDS virus does not live outside the body for long unless it is enclosed in something or in something bloody. Thus, if you see blood, it could contain AIDS. If someone with AIDS takes off a shirt, that shirt has been exposed to air. All AIDS viruses have been killed. An AIDS virus lives outside the body until it is exposed to air.

The flu, like a cold, is a virus, and so far, we really don't have a reliable way to treat viruses. That's why the cold, flu, herpes, HIV, etc aren't cured. the body develops its own response as best it can (cold, flu) until we heal, or we keep the virus forever (herpes, HIV).

It's like a shield and a cover. The protein shell protects the DNA codes inside the virus from being exposed to the immune system, and when the virus attacks, the protein shell opens up, and injects a string of DNA codes into the infected cell. If there were not protein coats to protect viruses then it will literally die in seconds after entering the host's system.

The virus tries to match the recognition glycoprotein on the outside of the cell it is trying to invade, for docking purposes, or for entry purposes. Generally the membrane that covers this type of virus was taken from a cell it lysed on exit.

They are both viruses but the flu is typically more intense. The symptoms are similar but more severe with the flu.

Asian Flu reached an epidemic in 1957, crossing the ocean and reaching the US. About 69,000 people died in the US that year from Asian Flu. For more iformation see the link to the Wikipedia page for this topic (under Related Links).

The vaccine in the flu shot contains either a "dead" (inactive) or a weakened form of the expected invading virus (or viruses) which can not make an otherwise healthy person sick. Our bodies use these antigens (vaccine's virus particles) as a template to create the right antibodies, that will have the right pattern to match and know how to destroy those same viruses in the wild (normal strength), if they enter the body in the future to try to use our cells to replicate themselves. Our bodies remember each virus pattern that is in the vaccinations so that they can make those matching cells to protect us again from that same specific flu strain (or sometimes strains that are very similar).

Our bodies also have the ability to determine when a virus has invaded and, if there is a match to that strain of virus stored from a prior invasion, the immune systems quickly make up a lot of those attack cells, that worked in the past to destroy the invading virus particles. If it is a new invading virus, usually our bodies can make cells that can match just right to destroy the new invader in a week to ten days. (They can sometimes do this even more quickly for bacteria and other microbes).

It is during this time period, when the body is matching and making the attack cells to "kill" the invader, that we feel sick until our body finds the key pattern of cells that will match and destroy that specific virus. The body "remembers" the pattern each time it makes cells that work to kill germs, so any time that same germ comes along again, or even sometimes a similar one, the immune system wastes no time in getting rid of the invading organism, because it knows already what will work. That is why, once we have had a flu virus like H1N1/09 Swine Flu before, we won't get sick from it again. The body will already know what cells to make and will send them out to destroy the invader.

This is also how vaccines help our bodies build up immunity or resistance to viruses and flu. The immune system remembers the pattern of the antibodies it made when it was exposed to the virus particles in the flu shot and if that type of virus turns up in the environment later, the cells are made and attack the virus before it can make us sick.

Rashes sometimes accompany viral infections and fevers, especially in children, and can be an indication that urgent medical examination is needed. Rash can be an early sign of serious infectious disease, both viral and bacterial, such as in bacterial infections with toxic shock syndrome.

Specific viral rashes have names such as chicken pox and rubella (German measles) and are often identified by their characteristic appearance of the rash and other symptoms. However, often the type of rash or other symptoms do not allow that specific a diagnosis to be made. So, the term "non-specific virus" is used to indicate that there have not been laboratory studies or specimens collected to grow (culture) and identify the exact virus causing the symptoms (which have been determined to not likely be characteristic of or typical of known specific viral rashes). These studies are typically not needed or ordered by the physician since the most common viruses to cause rash and cold-like symptoms are treated much the same way even if the specific type of virus involved is known. It is different in the case of bacteria and bacterial infections where the exact organism must be identified to prescribe the proper antibiotic to get rid of the bacteria.

Antibiotics, however, do not work to treat viruses. When no bacteria have been identified and no allergic cause of the rash has been found, then the presumptive working diagnosis is often "non-specific viral infection."

Responding to your addendum to the question on the discussion page asking why contact precautions were given, it is likely that these precautions are to be taken since the specific virus has not been identified, and some viral illnesses that can cause rash can be especially dangerous for children and pregnant women and the developing fetus. German measles, for example can cause harm to the developing baby.