H7N9 is a bird flu strain of the species Influenza virus A (avian influenza virus or bird flu virus).

And experts worry that the novel H1N1 virus could mutate into a more severe strain.

For example, a flu strain is a certain biological form of the influenza or flu virus.

The yellow fever virus vaccine, a live attenuated strain called 17D, is probably the safest and most effective vaccine ever generated.

WNV also spread to Europe, beyond the Mediterranean Basin, and a new strain of the virus was identified in Italy in 2012.

Although the main weapon used was vaccinia virus, which was used as the vaccine, no one seems to know exactly where vaccinia virus came from it is not the strain of cowpox that Edward Jenner used, and it is not a weakened form of smallpox.

Strain

Parker worked as a medical photographer in the Anatomy Department, where she was accidentally exposed to a strain of smallpox virus that was grown in a research laboratory on the floor below.

The four are Bundibugyo virus (BDBV), Sudan virus (SUDV), Taï Forest virus (TAFV) and one simply called Ebola virus (EBOV, formerly Zaire Ebola virus).

Virus protection and virus development constitute an uneven arms race.

A bird adapted strain of H5N1, called HPAI A(H5N1) for highly pathogenic avian influenza virus of type A of subtype H5N1, is the highly pathogenic causative agent of H5N1 flu, commonly known as avian influenza ( bird flu ).

The Japanese encephalitis virus is a virus from the family Flaviviridae.

A virus has either a DNA or an RNA genome and is called a DNA virus or an RNA virus, respectively.

H10N7 is a subtype of the species Influenza A virus (sometimes called bird flu virus).

This relationship, however, is not always without strain.

And a pig disease, a pig virus, and a human virus can both proliferate, and because of their kind of reproduction, they can combine and produce a new virus.

Ebola virus under an electron microscope.

And so we use a virus that's a non toxic virus called M13 bacteriophage that's job is to infect bacteria.

Yet freedom of speech in the West is under strain.

The Russian strain of political messianism is pretty much exhausted.

Rinderpest, which is caused by a virus closely related to measles virus, is a disease of cattle known since Roman times.

AIDS was discovered 1981 the virus, 1983.

The virus then buds from the cell.

One example is the West Nile Virus.

Clearly the bottom line is the virus eventually attenuates, and ceases to be a lethal virus to humanity, and finds other hosts.

For example, additional letters may be added to indicate a strain.

The natural hosts of the Japanese encephalitis virus are birds, not humans, and many believe the virus will therefore never be completely eliminated.

Griffith concluded that the type II R had been transformed into the lethal III S strain by a transforming principle that was somehow part of the dead III S strain bacteria.

For example, refugees leaving Sudan can strain the stability of neighboring Chad.

Prolonged periods of strain tend to weaken the fabric of institutional cooperation.

You blind guides, who strain out a gnat, and swallow a camel!

Ye blind guides, which strain at a gnat, and swallow a camel.

You know, the problem is if this virus occasionally mutates so dramatically, it essentially is a new virus and then we get a pandemic.

So far, a relatively small number of human beings have died from the current strain of avian influenza, and it appears that they have all been in contact with infected birds. But if the virus mutates into a form that is transmissible between humans, the number of deaths could run into the hundreds of millions.

For example, let's go with the Centipede virus first.

But the virus of nationalism has survived and multiplied.

Another virus has been upsetting them Freedom of Expression.

An oncovirus is a virus that can cause cancer.

And what we've been able to do is engineer a virus to basically take dye absorbing molecules and line them up on the surface of the virus so it acts as an antenna, and you get an energy transfer across the virus.

To what extent the EU can take this strain, only time will tell.

The immense response by central banks and finance ministries has eased the strain.

Under tremendous strain, Tymoshenko s government succeeded in keeping the budget deficit under control.

We realize that reporting can be a strain on already limited administrative resources.

Another consideration is that different strains of a herpes virus can have different characteristics which may result in differences in the precise effects of the virus.

Although the virus remains contained in Uige and has not spread nationwide, the cycle of transmission has not been stopped and the virus is still active.